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/Problem17_label19_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 18:03:03,114 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 18:03:03,116 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 18:03:03,133 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 18:03:03,133 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 18:03:03,134 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 18:03:03,136 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 18:03:03,137 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 18:03:03,139 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 18:03:03,140 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 18:03:03,141 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 18:03:03,141 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 18:03:03,142 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 18:03:03,143 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 18:03:03,144 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 18:03:03,145 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 18:03:03,146 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 18:03:03,148 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 18:03:03,150 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 18:03:03,151 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 18:03:03,153 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 18:03:03,154 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 18:03:03,158 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 18:03:03,158 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 18:03:03,158 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 18:03:03,162 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 18:03:03,163 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 18:03:03,164 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 18:03:03,165 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 18:03:03,166 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 18:03:03,166 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 18:03:03,167 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 18:03:03,167 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 18:03:03,167 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 18:03:03,168 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 18:03:03,169 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 18:03:03,169 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 [2018-09-14 18:03:03,187 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 18:03:03,188 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 18:03:03,189 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 18:03:03,189 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 18:03:03,189 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 18:03:03,189 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 18:03:03,189 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 18:03:03,189 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 18:03:03,190 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 18:03:03,190 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 18:03:03,190 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 18:03:03,191 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 18:03:03,191 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 18:03:03,191 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 18:03:03,192 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 18:03:03,192 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 18:03:03,192 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 18:03:03,192 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 18:03:03,192 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 18:03:03,193 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 18:03:03,193 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 18:03:03,193 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 18:03:03,193 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 18:03:03,195 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 18:03:03,195 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 18:03:03,195 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 18:03:03,195 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 18:03:03,195 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 18:03:03,196 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 18:03:03,196 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 18:03:03,196 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 18:03:03,196 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 18:03:03,197 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 18:03:03,252 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 18:03:03,267 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 18:03:03,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 18:03:03,274 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 18:03:03,275 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 18:03:03,276 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label19_true-unreach-call.c [2018-09-14 18:03:03,642 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01c0108ee/c6cac744e39f47829b9831ed8e06a846/FLAG7112c5175 [2018-09-14 18:03:04,053 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 18:03:04,054 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label19_true-unreach-call.c [2018-09-14 18:03:04,077 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01c0108ee/c6cac744e39f47829b9831ed8e06a846/FLAG7112c5175 [2018-09-14 18:03:04,093 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01c0108ee/c6cac744e39f47829b9831ed8e06a846 [2018-09-14 18:03:04,104 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 18:03:04,107 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 18:03:04,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 18:03:04,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 18:03:04,116 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 18:03:04,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:03:04" (1/1) ... [2018-09-14 18:03:04,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@428e54a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:03:04, skipping insertion in model container [2018-09-14 18:03:04,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:03:04" (1/1) ... [2018-09-14 18:03:04,133 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 18:03:05,109 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:03:05,131 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 18:03:05,551 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:03:05,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:03:05 WrapperNode [2018-09-14 18:03:05,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 18:03:05,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 18:03:05,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 18:03:05,805 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 18:03:05,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:03:05" (1/1) ... [2018-09-14 18:03:05,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:03:05" (1/1) ... [2018-09-14 18:03:06,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 18:03:06,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 18:03:06,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 18:03:06,088 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 18:03:06,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:03:05" (1/1) ... [2018-09-14 18:03:06,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:03:05" (1/1) ... [2018-09-14 18:03:06,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:03:05" (1/1) ... [2018-09-14 18:03:06,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:03:05" (1/1) ... [2018-09-14 18:03:06,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:03:05" (1/1) ... [2018-09-14 18:03:06,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:03:05" (1/1) ... [2018-09-14 18:03:06,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:03:05" (1/1) ... [2018-09-14 18:03:06,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 18:03:06,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 18:03:06,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 18:03:06,956 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 18:03:06,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:03:05" (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 [2018-09-14 18:03:07,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 18:03:07,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 18:03:07,030 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 18:03:07,030 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 18:03:07,030 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 18:03:07,031 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 18:03:07,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 18:03:07,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 18:03:07,031 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 18:03:07,031 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 18:03:17,834 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 18:03:17,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:03:17 BoogieIcfgContainer [2018-09-14 18:03:17,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 18:03:17,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 18:03:17,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 18:03:17,840 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 18:03:17,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 06:03:04" (1/3) ... [2018-09-14 18:03:17,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a5ef91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:03:17, skipping insertion in model container [2018-09-14 18:03:17,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:03:05" (2/3) ... [2018-09-14 18:03:17,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a5ef91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:03:17, skipping insertion in model container [2018-09-14 18:03:17,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:03:17" (3/3) ... [2018-09-14 18:03:17,843 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label19_true-unreach-call.c [2018-09-14 18:03:17,853 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 18:03:17,862 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 18:03:17,919 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 18:03:17,920 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 18:03:17,920 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 18:03:17,920 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 18:03:17,920 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 18:03:17,920 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 18:03:17,920 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 18:03:17,921 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 18:03:17,921 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 18:03:17,965 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-09-14 18:03:17,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-09-14 18:03:17,975 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:03:17,976 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, 1, 1] [2018-09-14 18:03:17,977 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:03:17,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1876496990, now seen corresponding path program 1 times [2018-09-14 18:03:17,984 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:03:18,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:03:18,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:03:18,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:03:18,033 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:03:18,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:03:18,495 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-09-14 18:03:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:03:18,509 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:03:18,509 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:03:18,509 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:03:18,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:03:18,532 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:03:18,533 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:03:18,535 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-09-14 18:03:28,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:03:28,639 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-09-14 18:03:28,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:03:28,643 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2018-09-14 18:03:28,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:03:28,676 INFO L225 Difference]: With dead ends: 2164 [2018-09-14 18:03:28,676 INFO L226 Difference]: Without dead ends: 1554 [2018-09-14 18:03:28,687 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:03:28,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-09-14 18:03:28,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1052. [2018-09-14 18:03:28,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-09-14 18:03:28,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1882 transitions. [2018-09-14 18:03:28,835 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1882 transitions. Word has length 49 [2018-09-14 18:03:28,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:03:28,836 INFO L480 AbstractCegarLoop]: Abstraction has 1052 states and 1882 transitions. [2018-09-14 18:03:28,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:03:28,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1882 transitions. [2018-09-14 18:03:28,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-09-14 18:03:28,849 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:03:28,849 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, 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] [2018-09-14 18:03:28,850 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:03:28,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1564943023, now seen corresponding path program 1 times [2018-09-14 18:03:28,850 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:03:28,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:03:28,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:03:28,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:03:28,853 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:03:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:03:29,141 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:03:29,141 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:03:29,141 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 18:03:29,142 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:03:29,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:03:29,144 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:03:29,144 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 18:03:29,144 INFO L87 Difference]: Start difference. First operand 1052 states and 1882 transitions. Second operand 5 states. [2018-09-14 18:03:42,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:03:42,440 INFO L93 Difference]: Finished difference Result 3031 states and 5537 transitions. [2018-09-14 18:03:42,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:03:42,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2018-09-14 18:03:42,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:03:42,458 INFO L225 Difference]: With dead ends: 3031 [2018-09-14 18:03:42,458 INFO L226 Difference]: Without dead ends: 1985 [2018-09-14 18:03:42,463 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:03:42,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2018-09-14 18:03:42,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1959. [2018-09-14 18:03:42,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-09-14 18:03:42,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3239 transitions. [2018-09-14 18:03:42,555 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3239 transitions. Word has length 121 [2018-09-14 18:03:42,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:03:42,556 INFO L480 AbstractCegarLoop]: Abstraction has 1959 states and 3239 transitions. [2018-09-14 18:03:42,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:03:42,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3239 transitions. [2018-09-14 18:03:42,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-09-14 18:03:42,560 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:03:42,561 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:03:42,561 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:03:42,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1382747383, now seen corresponding path program 1 times [2018-09-14 18:03:42,561 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:03:42,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:03:42,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:03:42,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:03:42,563 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:03:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:03:42,891 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:03:42,892 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:03:42,892 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 [2018-09-14 18:03:42,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:03:42,909 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:03:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:03:42,986 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:03:48,381 WARN L178 SmtUtils]: Spent 5.02 s on a formula simplification that was a NOOP. DAG size: 42 [2018-09-14 18:03:52,640 WARN L178 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 42 DAG size of output: 21 [2018-09-14 18:03:52,766 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:03:52,766 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:03:53,940 WARN L178 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2018-09-14 18:03:54,315 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:03:54,349 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:03:54,349 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-09-14 18:03:54,349 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:03:54,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:03:54,350 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:03:54,350 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=164, Unknown=1, NotChecked=0, Total=210 [2018-09-14 18:03:54,351 INFO L87 Difference]: Start difference. First operand 1959 states and 3239 transitions. Second operand 6 states. [2018-09-14 18:05:01,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:05:01,847 INFO L93 Difference]: Finished difference Result 7520 states and 12888 transitions. [2018-09-14 18:05:01,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 18:05:01,848 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-09-14 18:05:01,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:05:01,882 INFO L225 Difference]: With dead ends: 7520 [2018-09-14 18:05:01,883 INFO L226 Difference]: Without dead ends: 5567 [2018-09-14 18:05:01,898 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 242 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=45, Invalid=164, Unknown=1, NotChecked=0, Total=210 [2018-09-14 18:05:01,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5567 states. [2018-09-14 18:05:02,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5567 to 5559. [2018-09-14 18:05:02,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5559 states. [2018-09-14 18:05:02,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5559 states to 5559 states and 8703 transitions. [2018-09-14 18:05:02,077 INFO L78 Accepts]: Start accepts. Automaton has 5559 states and 8703 transitions. Word has length 124 [2018-09-14 18:05:02,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:05:02,078 INFO L480 AbstractCegarLoop]: Abstraction has 5559 states and 8703 transitions. [2018-09-14 18:05:02,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:05:02,078 INFO L276 IsEmpty]: Start isEmpty. Operand 5559 states and 8703 transitions. [2018-09-14 18:05:02,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-09-14 18:05:02,081 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:05:02,082 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, 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] [2018-09-14 18:05:02,082 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:05:02,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1130206287, now seen corresponding path program 1 times [2018-09-14 18:05:02,083 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:05:02,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:05:02,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:05:02,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:05:02,084 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:05:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:05:02,356 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:05:02,357 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:05:02,357 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:05:02,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:05:02,369 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:05:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:05:02,425 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:05:02,501 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:05:02,501 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:05:02,677 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:05:02,700 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 18:05:02,700 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-09-14 18:05:02,700 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:05:02,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:05:02,701 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:05:02,701 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:05:02,702 INFO L87 Difference]: Start difference. First operand 5559 states and 8703 transitions. Second operand 3 states. [2018-09-14 18:05:11,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:05:11,038 INFO L93 Difference]: Finished difference Result 14176 states and 22347 transitions. [2018-09-14 18:05:11,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:05:11,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2018-09-14 18:05:11,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:05:11,088 INFO L225 Difference]: With dead ends: 14176 [2018-09-14 18:05:11,088 INFO L226 Difference]: Without dead ends: 8623 [2018-09-14 18:05:11,126 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 273 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:05:11,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8623 states. [2018-09-14 18:05:11,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8623 to 8622. [2018-09-14 18:05:11,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8622 states. [2018-09-14 18:05:11,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8622 states to 8622 states and 12920 transitions. [2018-09-14 18:05:11,364 INFO L78 Accepts]: Start accepts. Automaton has 8622 states and 12920 transitions. Word has length 137 [2018-09-14 18:05:11,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:05:11,365 INFO L480 AbstractCegarLoop]: Abstraction has 8622 states and 12920 transitions. [2018-09-14 18:05:11,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:05:11,365 INFO L276 IsEmpty]: Start isEmpty. Operand 8622 states and 12920 transitions. [2018-09-14 18:05:11,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-09-14 18:05:11,369 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:05:11,369 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, 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] [2018-09-14 18:05:11,369 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:05:11,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1656879347, now seen corresponding path program 1 times [2018-09-14 18:05:11,370 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:05:11,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:05:11,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:05:11,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:05:11,371 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:05:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:05:11,674 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:05:11,675 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:05:11,675 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 18:05:11,675 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:05:11,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:05:11,676 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:05:11,676 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 18:05:11,677 INFO L87 Difference]: Start difference. First operand 8622 states and 12920 transitions. Second operand 5 states. [2018-09-14 18:05:27,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:05:27,504 INFO L93 Difference]: Finished difference Result 26752 states and 41954 transitions. [2018-09-14 18:05:27,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:05:27,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2018-09-14 18:05:27,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:05:27,599 INFO L225 Difference]: With dead ends: 26752 [2018-09-14 18:05:27,600 INFO L226 Difference]: Without dead ends: 18136 [2018-09-14 18:05:27,649 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:05:27,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18136 states. [2018-09-14 18:05:28,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18136 to 18017. [2018-09-14 18:05:28,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18017 states. [2018-09-14 18:05:28,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18017 states to 18017 states and 25289 transitions. [2018-09-14 18:05:28,069 INFO L78 Accepts]: Start accepts. Automaton has 18017 states and 25289 transitions. Word has length 139 [2018-09-14 18:05:28,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:05:28,069 INFO L480 AbstractCegarLoop]: Abstraction has 18017 states and 25289 transitions. [2018-09-14 18:05:28,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:05:28,070 INFO L276 IsEmpty]: Start isEmpty. Operand 18017 states and 25289 transitions. [2018-09-14 18:05:28,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-09-14 18:05:28,076 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:05:28,077 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:05:28,077 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:05:28,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1062053734, now seen corresponding path program 1 times [2018-09-14 18:05:28,077 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:05:28,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:05:28,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:05:28,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:05:28,078 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:05:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:05:28,298 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:05:28,379 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 85 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-14 18:05:28,380 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:05:28,380 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 [2018-09-14 18:05:28,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:05:28,388 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:05:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:05:28,456 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:05:28,542 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:05:28,543 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:05:28,841 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:05:28,862 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:05:28,862 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 5 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:05:28,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:05:28,880 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:05:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:05:29,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:05:29,170 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 18:05:29,170 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:05:29,317 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 18:05:29,318 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-14 18:05:29,319 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-09-14 18:05:29,320 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:05:29,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:05:29,321 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:05:29,322 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:05:29,322 INFO L87 Difference]: Start difference. First operand 18017 states and 25289 transitions. Second operand 5 states. [2018-09-14 18:05:34,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:05:34,309 INFO L93 Difference]: Finished difference Result 36511 states and 51354 transitions. [2018-09-14 18:05:34,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 18:05:34,310 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 202 [2018-09-14 18:05:34,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:05:34,374 INFO L225 Difference]: With dead ends: 36511 [2018-09-14 18:05:34,374 INFO L226 Difference]: Without dead ends: 18500 [2018-09-14 18:05:34,407 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 816 GetRequests, 798 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-14 18:05:34,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18500 states. [2018-09-14 18:05:34,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18500 to 18049. [2018-09-14 18:05:34,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18049 states. [2018-09-14 18:05:34,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18049 states to 18049 states and 21983 transitions. [2018-09-14 18:05:34,750 INFO L78 Accepts]: Start accepts. Automaton has 18049 states and 21983 transitions. Word has length 202 [2018-09-14 18:05:34,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:05:34,750 INFO L480 AbstractCegarLoop]: Abstraction has 18049 states and 21983 transitions. [2018-09-14 18:05:34,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:05:34,751 INFO L276 IsEmpty]: Start isEmpty. Operand 18049 states and 21983 transitions. [2018-09-14 18:05:34,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-09-14 18:05:34,761 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:05:34,761 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:05:34,761 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:05:34,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1393136275, now seen corresponding path program 1 times [2018-09-14 18:05:34,762 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:05:34,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:05:34,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:05:34,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:05:34,763 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:05:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:05:35,000 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 18:05:35,000 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:05:35,000 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 18:05:35,000 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:05:35,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:05:35,001 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:05:35,001 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:05:35,002 INFO L87 Difference]: Start difference. First operand 18049 states and 21983 transitions. Second operand 3 states. [2018-09-14 18:05:41,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:05:41,320 INFO L93 Difference]: Finished difference Result 45602 states and 56615 transitions. [2018-09-14 18:05:41,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:05:41,324 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 303 [2018-09-14 18:05:41,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:05:41,403 INFO L225 Difference]: With dead ends: 45602 [2018-09-14 18:05:41,403 INFO L226 Difference]: Without dead ends: 27559 [2018-09-14 18:05:41,443 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:05:41,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27559 states. [2018-09-14 18:05:41,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27559 to 27549. [2018-09-14 18:05:41,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27549 states. [2018-09-14 18:05:41,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27549 states to 27549 states and 32701 transitions. [2018-09-14 18:05:41,895 INFO L78 Accepts]: Start accepts. Automaton has 27549 states and 32701 transitions. Word has length 303 [2018-09-14 18:05:41,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:05:41,896 INFO L480 AbstractCegarLoop]: Abstraction has 27549 states and 32701 transitions. [2018-09-14 18:05:41,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:05:41,896 INFO L276 IsEmpty]: Start isEmpty. Operand 27549 states and 32701 transitions. [2018-09-14 18:05:41,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2018-09-14 18:05:41,930 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:05:41,930 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, 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] [2018-09-14 18:05:41,931 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:05:41,931 INFO L82 PathProgramCache]: Analyzing trace with hash 741072818, now seen corresponding path program 1 times [2018-09-14 18:05:41,931 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:05:41,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:05:41,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:05:41,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:05:41,933 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:05:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:05:42,607 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:05:42,608 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:05:42,608 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:05:42,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:05:42,617 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:05:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:05:42,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:05:42,942 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:05:42,943 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:05:43,630 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:05:43,650 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:05:43,651 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-09-14 18:05:43,651 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:05:43,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:05:43,652 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:05:43,652 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-09-14 18:05:43,652 INFO L87 Difference]: Start difference. First operand 27549 states and 32701 transitions. Second operand 6 states. [2018-09-14 18:05:51,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:05:51,594 INFO L93 Difference]: Finished difference Result 58611 states and 69848 transitions. [2018-09-14 18:05:51,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 18:05:51,594 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 397 [2018-09-14 18:05:51,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:05:51,680 INFO L225 Difference]: With dead ends: 58611 [2018-09-14 18:05:51,681 INFO L226 Difference]: Without dead ends: 31068 [2018-09-14 18:05:51,732 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 793 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-09-14 18:05:51,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31068 states. [2018-09-14 18:05:52,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31068 to 28887. [2018-09-14 18:05:52,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28887 states. [2018-09-14 18:05:52,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28887 states to 28887 states and 34148 transitions. [2018-09-14 18:05:52,513 INFO L78 Accepts]: Start accepts. Automaton has 28887 states and 34148 transitions. Word has length 397 [2018-09-14 18:05:52,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:05:52,514 INFO L480 AbstractCegarLoop]: Abstraction has 28887 states and 34148 transitions. [2018-09-14 18:05:52,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:05:52,514 INFO L276 IsEmpty]: Start isEmpty. Operand 28887 states and 34148 transitions. [2018-09-14 18:05:52,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2018-09-14 18:05:52,553 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:05:52,554 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:05:52,554 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:05:52,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1191699820, now seen corresponding path program 1 times [2018-09-14 18:05:52,554 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:05:52,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:05:52,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:05:52,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:05:52,556 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:05:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:05:53,029 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2018-09-14 18:05:53,030 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:05:53,030 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:05:53,030 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:05:53,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:05:53,031 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:05:53,031 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:05:53,031 INFO L87 Difference]: Start difference. First operand 28887 states and 34148 transitions. Second operand 4 states. [2018-09-14 18:06:02,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:06:02,725 INFO L93 Difference]: Finished difference Result 72724 states and 89059 transitions. [2018-09-14 18:06:02,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:06:02,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 470 [2018-09-14 18:06:02,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:06:02,848 INFO L225 Difference]: With dead ends: 72724 [2018-09-14 18:06:02,848 INFO L226 Difference]: Without dead ends: 43843 [2018-09-14 18:06:02,917 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 [2018-09-14 18:06:02,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43843 states. [2018-09-14 18:06:03,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43843 to 41654. [2018-09-14 18:06:03,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41654 states. [2018-09-14 18:06:03,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41654 states to 41654 states and 49947 transitions. [2018-09-14 18:06:03,998 INFO L78 Accepts]: Start accepts. Automaton has 41654 states and 49947 transitions. Word has length 470 [2018-09-14 18:06:03,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:06:03,999 INFO L480 AbstractCegarLoop]: Abstraction has 41654 states and 49947 transitions. [2018-09-14 18:06:03,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:06:03,999 INFO L276 IsEmpty]: Start isEmpty. Operand 41654 states and 49947 transitions. [2018-09-14 18:06:04,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2018-09-14 18:06:04,047 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:06:04,047 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:06:04,047 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:06:04,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1263446493, now seen corresponding path program 1 times [2018-09-14 18:06:04,048 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:06:04,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:06:04,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:06:04,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:06:04,049 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:06:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:06:04,514 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2018-09-14 18:06:04,514 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:06:04,514 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 18:06:04,514 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:06:04,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:06:04,515 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:06:04,516 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:06:04,516 INFO L87 Difference]: Start difference. First operand 41654 states and 49947 transitions. Second operand 3 states. [2018-09-14 18:06:10,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:06:10,211 INFO L93 Difference]: Finished difference Result 100705 states and 123397 transitions. [2018-09-14 18:06:10,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:06:10,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 494 [2018-09-14 18:06:10,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:06:10,400 INFO L225 Difference]: With dead ends: 100705 [2018-09-14 18:06:10,400 INFO L226 Difference]: Without dead ends: 59057 [2018-09-14 18:06:10,499 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:06:10,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59057 states. [2018-09-14 18:06:11,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59057 to 57309. [2018-09-14 18:06:11,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57309 states. [2018-09-14 18:06:11,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57309 states to 57309 states and 68394 transitions. [2018-09-14 18:06:11,759 INFO L78 Accepts]: Start accepts. Automaton has 57309 states and 68394 transitions. Word has length 494 [2018-09-14 18:06:11,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:06:11,760 INFO L480 AbstractCegarLoop]: Abstraction has 57309 states and 68394 transitions. [2018-09-14 18:06:11,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:06:11,760 INFO L276 IsEmpty]: Start isEmpty. Operand 57309 states and 68394 transitions. [2018-09-14 18:06:11,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2018-09-14 18:06:11,835 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:06:11,836 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:06:11,836 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:06:11,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1646629122, now seen corresponding path program 1 times [2018-09-14 18:06:11,837 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:06:11,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:06:11,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:06:11,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:06:11,838 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:06:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:06:12,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 236 proven. 4 refuted. 0 times theorem prover too weak. 986 trivial. 0 not checked. [2018-09-14 18:06:12,405 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:06:12,405 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 [2018-09-14 18:06:12,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:06:12,421 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:06:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:06:12,625 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:06:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 763 proven. 0 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2018-09-14 18:06:12,880 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:06:13,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 236 proven. 4 refuted. 0 times theorem prover too weak. 986 trivial. 0 not checked. [2018-09-14 18:06:13,525 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:06:13,525 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-09-14 18:06:13,525 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:06:13,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:06:13,526 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:06:13,527 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:06:13,527 INFO L87 Difference]: Start difference. First operand 57309 states and 68394 transitions. Second operand 3 states. [2018-09-14 18:06:19,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:06:19,898 INFO L93 Difference]: Finished difference Result 148405 states and 179386 transitions. [2018-09-14 18:06:19,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:06:19,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 671 [2018-09-14 18:06:19,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:06:20,191 INFO L225 Difference]: With dead ends: 148405 [2018-09-14 18:06:20,191 INFO L226 Difference]: Without dead ends: 91102 [2018-09-14 18:06:20,354 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1344 GetRequests, 1342 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:06:20,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91102 states. [2018-09-14 18:06:21,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91102 to 90205. [2018-09-14 18:06:21,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90205 states. [2018-09-14 18:06:22,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90205 states to 90205 states and 106666 transitions. [2018-09-14 18:06:22,135 INFO L78 Accepts]: Start accepts. Automaton has 90205 states and 106666 transitions. Word has length 671 [2018-09-14 18:06:22,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:06:22,135 INFO L480 AbstractCegarLoop]: Abstraction has 90205 states and 106666 transitions. [2018-09-14 18:06:22,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:06:22,136 INFO L276 IsEmpty]: Start isEmpty. Operand 90205 states and 106666 transitions. [2018-09-14 18:06:22,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 716 [2018-09-14 18:06:22,258 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:06:22,259 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:06:22,259 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:06:22,259 INFO L82 PathProgramCache]: Analyzing trace with hash -540931923, now seen corresponding path program 1 times [2018-09-14 18:06:22,260 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:06:22,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:06:22,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:06:22,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:06:22,261 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:06:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:06:22,811 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked. [2018-09-14 18:06:22,811 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:06:22,812 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 18:06:22,812 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:06:22,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:06:22,813 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:06:22,813 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:06:22,813 INFO L87 Difference]: Start difference. First operand 90205 states and 106666 transitions. Second operand 3 states. [2018-09-14 18:06:29,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:06:29,450 INFO L93 Difference]: Finished difference Result 186925 states and 221615 transitions. [2018-09-14 18:06:29,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:06:29,451 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 715 [2018-09-14 18:06:29,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:06:29,635 INFO L225 Difference]: With dead ends: 186925 [2018-09-14 18:06:29,635 INFO L226 Difference]: Without dead ends: 83559 [2018-09-14 18:06:29,777 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:06:29,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83559 states. [2018-09-14 18:06:30,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83559 to 83553. [2018-09-14 18:06:30,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83553 states. [2018-09-14 18:06:30,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83553 states to 83553 states and 97265 transitions. [2018-09-14 18:06:30,874 INFO L78 Accepts]: Start accepts. Automaton has 83553 states and 97265 transitions. Word has length 715 [2018-09-14 18:06:30,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:06:30,875 INFO L480 AbstractCegarLoop]: Abstraction has 83553 states and 97265 transitions. [2018-09-14 18:06:30,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:06:30,875 INFO L276 IsEmpty]: Start isEmpty. Operand 83553 states and 97265 transitions. [2018-09-14 18:06:30,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 739 [2018-09-14 18:06:30,958 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:06:30,959 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:06:30,959 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:06:30,959 INFO L82 PathProgramCache]: Analyzing trace with hash -609627159, now seen corresponding path program 1 times [2018-09-14 18:06:30,959 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:06:30,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:06:30,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:06:30,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:06:30,961 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:06:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:06:31,737 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 457 proven. 2 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2018-09-14 18:06:31,738 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:06:31,738 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:06:31,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:06:31,748 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:06:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:06:31,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:06:33,224 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 177 proven. 0 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2018-09-14 18:06:33,225 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:06:34,002 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 177 proven. 0 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2018-09-14 18:06:34,022 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 18:06:34,023 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-09-14 18:06:34,023 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:06:34,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:06:34,025 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:06:34,025 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:06:34,025 INFO L87 Difference]: Start difference. First operand 83553 states and 97265 transitions. Second operand 3 states. [2018-09-14 18:06:37,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:06:37,839 INFO L93 Difference]: Finished difference Result 166663 states and 194016 transitions. [2018-09-14 18:06:37,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:06:37,839 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 738 [2018-09-14 18:06:37,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:06:38,044 INFO L225 Difference]: With dead ends: 166663 [2018-09-14 18:06:38,044 INFO L226 Difference]: Without dead ends: 83116 [2018-09-14 18:06:38,160 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1482 GetRequests, 1475 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:06:38,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83116 states. [2018-09-14 18:06:39,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83116 to 83116. [2018-09-14 18:06:39,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83116 states. [2018-09-14 18:06:39,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83116 states to 83116 states and 96750 transitions. [2018-09-14 18:06:39,935 INFO L78 Accepts]: Start accepts. Automaton has 83116 states and 96750 transitions. Word has length 738 [2018-09-14 18:06:39,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:06:39,936 INFO L480 AbstractCegarLoop]: Abstraction has 83116 states and 96750 transitions. [2018-09-14 18:06:39,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:06:39,936 INFO L276 IsEmpty]: Start isEmpty. Operand 83116 states and 96750 transitions. [2018-09-14 18:06:40,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2018-09-14 18:06:40,015 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:06:40,016 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:06:40,016 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:06:40,016 INFO L82 PathProgramCache]: Analyzing trace with hash -479981739, now seen corresponding path program 1 times [2018-09-14 18:06:40,017 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:06:40,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:06:40,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:06:40,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:06:40,017 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:06:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:06:40,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 236 proven. 12 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2018-09-14 18:06:40,917 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:06:40,917 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 [2018-09-14 18:06:40,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:06:40,933 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:06:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:06:41,169 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:06:41,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 813 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2018-09-14 18:06:41,724 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:06:42,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 242 proven. 12 refuted. 0 times theorem prover too weak. 835 trivial. 0 not checked. [2018-09-14 18:06:42,148 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:06:42,148 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 4] total 5 [2018-09-14 18:06:42,149 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:06:42,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:06:42,150 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:06:42,150 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-14 18:06:42,150 INFO L87 Difference]: Start difference. First operand 83116 states and 96750 transitions. Second operand 3 states. [2018-09-14 18:06:45,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:06:45,300 INFO L93 Difference]: Finished difference Result 163122 states and 189515 transitions. [2018-09-14 18:06:45,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:06:45,301 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 791 [2018-09-14 18:06:45,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:06:45,504 INFO L225 Difference]: With dead ends: 163122 [2018-09-14 18:06:45,504 INFO L226 Difference]: Without dead ends: 80010 [2018-09-14 18:06:45,619 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1587 GetRequests, 1582 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-14 18:06:45,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80010 states. [2018-09-14 18:06:46,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80010 to 80008. [2018-09-14 18:06:46,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80008 states. [2018-09-14 18:06:47,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80008 states to 80008 states and 92512 transitions. [2018-09-14 18:06:47,053 INFO L78 Accepts]: Start accepts. Automaton has 80008 states and 92512 transitions. Word has length 791 [2018-09-14 18:06:47,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:06:47,054 INFO L480 AbstractCegarLoop]: Abstraction has 80008 states and 92512 transitions. [2018-09-14 18:06:47,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:06:47,054 INFO L276 IsEmpty]: Start isEmpty. Operand 80008 states and 92512 transitions. [2018-09-14 18:06:47,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2018-09-14 18:06:47,133 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:06:47,133 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:06:47,133 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:06:47,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1048173577, now seen corresponding path program 1 times [2018-09-14 18:06:47,134 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:06:47,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:06:47,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:06:47,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:06:47,135 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:06:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:06:48,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 456 proven. 75 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2018-09-14 18:06:48,238 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:06:48,238 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:06:48,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:06:48,258 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:06:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:06:48,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:06:49,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 675 proven. 2 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2018-09-14 18:06:49,370 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:06:50,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 298 proven. 289 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2018-09-14 18:06:50,104 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:06:50,105 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 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:06:50,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:06:50,121 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:06:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:06:50,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:06:51,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 793 proven. 2 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-09-14 18:06:51,138 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:06:51,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 456 proven. 75 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2018-09-14 18:06:51,576 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:06:51,577 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 6] total 16 [2018-09-14 18:06:51,577 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:06:51,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:06:51,579 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:06:51,579 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-09-14 18:06:51,579 INFO L87 Difference]: Start difference. First operand 80008 states and 92512 transitions. Second operand 9 states. Received shutdown request... [2018-09-14 18:07:06,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-14 18:07:06,526 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 18:07:06,531 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 18:07:06,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 06:07:06 BoogieIcfgContainer [2018-09-14 18:07:06,532 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 18:07:06,533 INFO L168 Benchmark]: Toolchain (without parser) took 242427.87 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -820.1 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-09-14 18:07:06,534 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-09-14 18:07:06,534 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1695.17 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: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-09-14 18:07:06,535 INFO L168 Benchmark]: Boogie Procedure Inliner took 282.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. [2018-09-14 18:07:06,536 INFO L168 Benchmark]: Boogie Preprocessor took 867.66 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 933.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. [2018-09-14 18:07:06,537 INFO L168 Benchmark]: RCFGBuilder took 10879.40 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.9 GB in the end (delta: 455.1 MB). Peak memory consumption was 455.1 MB. Max. memory is 7.1 GB. [2018-09-14 18:07:06,537 INFO L168 Benchmark]: TraceAbstraction took 228695.90 ms. Allocated memory was 2.5 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 1.9 GB in the beginning and 2.2 GB in the end (delta: -354.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-09-14 18:07:06,542 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 1695.17 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: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 282.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 867.66 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 933.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10879.40 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.9 GB in the end (delta: 455.1 MB). Peak memory consumption was 455.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228695.90 ms. Allocated memory was 2.5 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 1.9 GB in the beginning and 2.2 GB in the end (delta: -354.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 134]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 134). Cancelled while BasicCegarLoop was constructing difference of abstraction (80008states) and FLOYD_HOARE automaton (currently 32 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (87483 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 228.6s OverallTime, 15 OverallIterations, 6 TraceHistogramMax, 187.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5984 SDtfs, 21410 SDslu, 2750 SDs, 0 SdLazy, 36396 SolverSat, 9505 SolverUnsat, 20 SolverUnknown, 0 SolverNotchecked, 165.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9844 GetRequests, 9712 SyntacticMatches, 23 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 15.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90205occurred in iteration=11, 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: 11.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 8140 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 24.5s InterpolantComputationTime, 10995 NumberOfCodeBlocks, 10995 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 15810 ConstructedInterpolants, 123 QuantifiedInterpolants, 15469935 SizeOfPredicates, 16 NumberOfNonLiveVariables, 7303 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 35 InterpolantComputations, 16 PerfectInterpolantSequences, 17334/17986 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/Problem17_label19_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_18-07-06-556.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label19_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_18-07-06-556.csv Completed graceful shutdown