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/Problem15_label19_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:45:11,028 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:45:11,030 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:45:11,041 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:45:11,042 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:45:11,043 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:45:11,044 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:45:11,046 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:45:11,048 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:45:11,048 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:45:11,049 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:45:11,050 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:45:11,051 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:45:11,052 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:45:11,053 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:45:11,053 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:45:11,054 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:45:11,056 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:45:11,058 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:45:11,059 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:45:11,060 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:45:11,062 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:45:11,066 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:45:11,066 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:45:11,067 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:45:11,068 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:45:11,074 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:45:11,075 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:45:11,076 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:45:11,080 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:45:11,080 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:45:11,081 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:45:11,081 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:45:11,081 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:45:11,083 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:45:11,084 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:45:11,085 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 17:45:11,110 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:45:11,110 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:45:11,111 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:45:11,111 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:45:11,111 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:45:11,111 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:45:11,112 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:45:11,112 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:45:11,112 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:45:11,112 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:45:11,112 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:45:11,113 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:45:11,114 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:45:11,114 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:45:11,114 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:45:11,115 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:45:11,115 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:45:11,115 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:45:11,115 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:45:11,116 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:45:11,117 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:45:11,117 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:45:11,117 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:45:11,117 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:45:11,117 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:45:11,118 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:45:11,118 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:45:11,118 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:45:11,118 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:45:11,118 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:45:11,119 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:45:11,119 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:45:11,119 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:45:11,167 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:45:11,179 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:45:11,182 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:45:11,184 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:45:11,184 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:45:11,185 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label19_true-unreach-call.c [2018-09-14 17:45:11,536 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90bcb6d85/69cbc86204814e9d80f2e3e17d1f404e/FLAGa39a495e2 [2018-09-14 17:45:11,892 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:45:11,892 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label19_true-unreach-call.c [2018-09-14 17:45:11,921 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90bcb6d85/69cbc86204814e9d80f2e3e17d1f404e/FLAGa39a495e2 [2018-09-14 17:45:11,941 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90bcb6d85/69cbc86204814e9d80f2e3e17d1f404e [2018-09-14 17:45:11,954 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:45:11,957 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:45:11,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:45:11,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:45:11,965 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:45:11,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:45:11" (1/1) ... [2018-09-14 17:45:11,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70d32f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:45:11, skipping insertion in model container [2018-09-14 17:45:11,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:45:11" (1/1) ... [2018-09-14 17:45:11,981 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:45:12,778 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:45:12,797 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:45:13,067 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:45:13,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:45:13 WrapperNode [2018-09-14 17:45:13,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:45:13,220 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:45:13,220 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:45:13,220 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:45:13,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:45:13" (1/1) ... [2018-09-14 17:45:13,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:45:13" (1/1) ... [2018-09-14 17:45:13,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:45:13,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:45:13,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:45:13,448 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:45:13,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:45:13" (1/1) ... [2018-09-14 17:45:13,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:45:13" (1/1) ... [2018-09-14 17:45:13,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:45:13" (1/1) ... [2018-09-14 17:45:13,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:45:13" (1/1) ... [2018-09-14 17:45:14,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:45:13" (1/1) ... [2018-09-14 17:45:14,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:45:13" (1/1) ... [2018-09-14 17:45:14,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:45:13" (1/1) ... [2018-09-14 17:45:14,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:45:14,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:45:14,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:45:14,119 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:45:14,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:45:13" (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 17:45:14,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:45:14,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:45:14,193 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:45:14,193 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:45:14,194 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:45:14,194 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:45:14,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:45:14,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:45:14,194 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:45:14,195 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:45:21,692 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:45:21,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:45:21 BoogieIcfgContainer [2018-09-14 17:45:21,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:45:21,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:45:21,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:45:21,700 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:45:21,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:45:11" (1/3) ... [2018-09-14 17:45:21,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36534f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:45:21, skipping insertion in model container [2018-09-14 17:45:21,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:45:13" (2/3) ... [2018-09-14 17:45:21,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36534f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:45:21, skipping insertion in model container [2018-09-14 17:45:21,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:45:21" (3/3) ... [2018-09-14 17:45:21,705 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label19_true-unreach-call.c [2018-09-14 17:45:21,715 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:45:21,723 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:45:21,778 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:45:21,779 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:45:21,779 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:45:21,779 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:45:21,779 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:45:21,779 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:45:21,779 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:45:21,780 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:45:21,780 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:45:21,813 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-09-14 17:45:21,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-14 17:45:21,823 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:45:21,824 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, 1, 1, 1] [2018-09-14 17:45:21,826 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:45:21,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1227807684, now seen corresponding path program 1 times [2018-09-14 17:45:21,833 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:45:21,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:45:21,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:45:21,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:45:21,884 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:45:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:45:22,359 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-09-14 17:45:22,385 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 17:45:22,387 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:45:22,388 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:45:22,388 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:45:22,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:45:22,410 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:45:22,411 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:45:22,414 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-09-14 17:45:30,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:45:30,071 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-09-14 17:45:30,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:45:30,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-09-14 17:45:30,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:45:30,124 INFO L225 Difference]: With dead ends: 1558 [2018-09-14 17:45:30,125 INFO L226 Difference]: Without dead ends: 1114 [2018-09-14 17:45:30,136 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 17:45:30,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-09-14 17:45:30,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 759. [2018-09-14 17:45:30,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2018-09-14 17:45:30,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1355 transitions. [2018-09-14 17:45:30,306 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1355 transitions. Word has length 52 [2018-09-14 17:45:30,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:45:30,307 INFO L480 AbstractCegarLoop]: Abstraction has 759 states and 1355 transitions. [2018-09-14 17:45:30,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:45:30,308 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1355 transitions. [2018-09-14 17:45:30,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-09-14 17:45:30,322 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:45:30,323 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, 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] [2018-09-14 17:45:30,323 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:45:30,324 INFO L82 PathProgramCache]: Analyzing trace with hash -773066201, now seen corresponding path program 1 times [2018-09-14 17:45:30,324 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:45:30,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:45:30,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:45:30,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:45:30,326 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:45:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:45:30,800 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:45:30,801 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:45:30,801 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:45:30,801 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:45:30,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:45:30,803 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:45:30,803 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:45:30,804 INFO L87 Difference]: Start difference. First operand 759 states and 1355 transitions. Second operand 5 states. [2018-09-14 17:45:43,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:45:43,939 INFO L93 Difference]: Finished difference Result 2506 states and 4577 transitions. [2018-09-14 17:45:43,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:45:43,941 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2018-09-14 17:45:43,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:45:43,954 INFO L225 Difference]: With dead ends: 2506 [2018-09-14 17:45:43,955 INFO L226 Difference]: Without dead ends: 1753 [2018-09-14 17:45:43,959 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-09-14 17:45:43,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2018-09-14 17:45:44,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1733. [2018-09-14 17:45:44,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2018-09-14 17:45:44,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 3007 transitions. [2018-09-14 17:45:44,037 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 3007 transitions. Word has length 122 [2018-09-14 17:45:44,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:45:44,038 INFO L480 AbstractCegarLoop]: Abstraction has 1733 states and 3007 transitions. [2018-09-14 17:45:44,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:45:44,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 3007 transitions. [2018-09-14 17:45:44,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-09-14 17:45:44,049 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:45:44,049 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, 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 17:45:44,050 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:45:44,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1495807734, now seen corresponding path program 1 times [2018-09-14 17:45:44,050 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:45:44,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:45:44,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:45:44,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:45:44,052 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:45:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:45:44,385 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:45:44,386 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:45:44,386 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:45:44,386 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:45:44,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:45:44,387 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:45:44,387 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:45:44,388 INFO L87 Difference]: Start difference. First operand 1733 states and 3007 transitions. Second operand 6 states. [2018-09-14 17:45:59,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:45:59,278 INFO L93 Difference]: Finished difference Result 5661 states and 10507 transitions. [2018-09-14 17:45:59,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-14 17:45:59,279 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2018-09-14 17:45:59,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:45:59,312 INFO L225 Difference]: With dead ends: 5661 [2018-09-14 17:45:59,312 INFO L226 Difference]: Without dead ends: 3934 [2018-09-14 17:45:59,335 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-14 17:45:59,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3934 states. [2018-09-14 17:45:59,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3934 to 3824. [2018-09-14 17:45:59,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3824 states. [2018-09-14 17:45:59,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3824 states to 3824 states and 5802 transitions. [2018-09-14 17:45:59,469 INFO L78 Accepts]: Start accepts. Automaton has 3824 states and 5802 transitions. Word has length 123 [2018-09-14 17:45:59,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:45:59,470 INFO L480 AbstractCegarLoop]: Abstraction has 3824 states and 5802 transitions. [2018-09-14 17:45:59,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:45:59,470 INFO L276 IsEmpty]: Start isEmpty. Operand 3824 states and 5802 transitions. [2018-09-14 17:45:59,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-09-14 17:45:59,472 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:45:59,472 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, 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 17:45:59,473 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:45:59,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1360707218, now seen corresponding path program 1 times [2018-09-14 17:45:59,473 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:45:59,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:45:59,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:45:59,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:45:59,474 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:45:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:45:59,728 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:45:59,775 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:45:59,775 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:45:59,775 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:45:59,776 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:45:59,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:45:59,776 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:45:59,777 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:45:59,777 INFO L87 Difference]: Start difference. First operand 3824 states and 5802 transitions. Second operand 6 states. [2018-09-14 17:46:07,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:46:07,311 INFO L93 Difference]: Finished difference Result 10749 states and 17614 transitions. [2018-09-14 17:46:07,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:46:07,315 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-09-14 17:46:07,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:46:07,368 INFO L225 Difference]: With dead ends: 10749 [2018-09-14 17:46:07,368 INFO L226 Difference]: Without dead ends: 7240 [2018-09-14 17:46:07,408 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:46:07,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7240 states. [2018-09-14 17:46:07,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7240 to 7185. [2018-09-14 17:46:07,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7185 states. [2018-09-14 17:46:07,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7185 states to 7185 states and 10411 transitions. [2018-09-14 17:46:07,747 INFO L78 Accepts]: Start accepts. Automaton has 7185 states and 10411 transitions. Word has length 127 [2018-09-14 17:46:07,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:46:07,748 INFO L480 AbstractCegarLoop]: Abstraction has 7185 states and 10411 transitions. [2018-09-14 17:46:07,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:46:07,748 INFO L276 IsEmpty]: Start isEmpty. Operand 7185 states and 10411 transitions. [2018-09-14 17:46:07,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-14 17:46:07,752 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:46:07,752 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, 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] [2018-09-14 17:46:07,756 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:46:07,757 INFO L82 PathProgramCache]: Analyzing trace with hash -507052443, now seen corresponding path program 1 times [2018-09-14 17:46:07,757 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:46:07,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:46:07,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:46:07,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:46:07,758 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:46:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:46:08,165 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:46:08,165 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:46:08,165 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 17:46:08,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:46:08,175 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:46:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:46:08,257 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:46:12,444 WARN L178 SmtUtils]: Spent 1.69 s on a formula simplification that was a NOOP. DAG size: 37 [2018-09-14 17:46:14,757 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:46:14,757 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:46:15,093 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:46:15,128 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:46:15,128 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 11 [2018-09-14 17:46:15,128 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:46:15,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:46:15,129 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:46:15,129 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-09-14 17:46:15,130 INFO L87 Difference]: Start difference. First operand 7185 states and 10411 transitions. Second operand 3 states. [2018-09-14 17:46:18,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:46:18,841 INFO L93 Difference]: Finished difference Result 17965 states and 27198 transitions. [2018-09-14 17:46:18,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:46:18,843 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2018-09-14 17:46:18,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:46:18,932 INFO L225 Difference]: With dead ends: 17965 [2018-09-14 17:46:18,933 INFO L226 Difference]: Without dead ends: 11095 [2018-09-14 17:46:19,016 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 292 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-09-14 17:46:19,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11095 states. [2018-09-14 17:46:19,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11095 to 11093. [2018-09-14 17:46:19,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11093 states. [2018-09-14 17:46:19,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11093 states to 11093 states and 15372 transitions. [2018-09-14 17:46:19,350 INFO L78 Accepts]: Start accepts. Automaton has 11093 states and 15372 transitions. Word has length 148 [2018-09-14 17:46:19,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:46:19,351 INFO L480 AbstractCegarLoop]: Abstraction has 11093 states and 15372 transitions. [2018-09-14 17:46:19,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:46:19,351 INFO L276 IsEmpty]: Start isEmpty. Operand 11093 states and 15372 transitions. [2018-09-14 17:46:19,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-09-14 17:46:19,360 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:46:19,360 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, 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] [2018-09-14 17:46:19,361 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:46:19,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1797896167, now seen corresponding path program 1 times [2018-09-14 17:46:19,361 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:46:19,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:46:19,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:46:19,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:46:19,363 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:46:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:46:19,955 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 15 [2018-09-14 17:46:20,346 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:46:20,347 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:46:20,347 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 17:46:20,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:46:20,365 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:46:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:46:20,458 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:46:21,835 WARN L178 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-09-14 17:46:21,925 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:46:21,926 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:46:22,241 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-09-14 17:46:22,538 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2018-09-14 17:46:23,249 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:46:23,269 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 17:46:23,270 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7] total 12 [2018-09-14 17:46:23,270 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:46:23,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:46:23,271 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:46:23,271 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:46:23,272 INFO L87 Difference]: Start difference. First operand 11093 states and 15372 transitions. Second operand 5 states. [2018-09-14 17:46:23,526 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 17:46:34,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:46:34,798 INFO L93 Difference]: Finished difference Result 24338 states and 35057 transitions. [2018-09-14 17:46:34,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:46:34,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2018-09-14 17:46:34,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:46:34,876 INFO L225 Difference]: With dead ends: 24338 [2018-09-14 17:46:34,876 INFO L226 Difference]: Without dead ends: 13559 [2018-09-14 17:46:34,933 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 436 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-09-14 17:46:34,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13559 states. [2018-09-14 17:46:35,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13559 to 13335. [2018-09-14 17:46:35,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13335 states. [2018-09-14 17:46:35,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13335 states to 13335 states and 18507 transitions. [2018-09-14 17:46:35,294 INFO L78 Accepts]: Start accepts. Automaton has 13335 states and 18507 transitions. Word has length 220 [2018-09-14 17:46:35,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:46:35,295 INFO L480 AbstractCegarLoop]: Abstraction has 13335 states and 18507 transitions. [2018-09-14 17:46:35,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:46:35,295 INFO L276 IsEmpty]: Start isEmpty. Operand 13335 states and 18507 transitions. [2018-09-14 17:46:35,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-09-14 17:46:35,312 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:46:35,313 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:35,313 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:46:35,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1909686646, now seen corresponding path program 1 times [2018-09-14 17:46:35,314 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:46:35,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:46:35,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:46:35,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:46:35,315 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:46:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:46:35,783 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 91 proven. 89 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-14 17:46:35,783 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:46:35,783 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 17:46:35,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:46:35,919 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:46:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:46:36,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:46:36,118 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-09-14 17:46:36,118 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:46:36,522 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-09-14 17:46:36,543 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:46:36,543 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-09-14 17:46:36,543 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:46:36,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:46:36,544 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:46:36,544 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:46:36,545 INFO L87 Difference]: Start difference. First operand 13335 states and 18507 transitions. Second operand 5 states. [2018-09-14 17:46:42,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:46:42,086 INFO L93 Difference]: Finished difference Result 28543 states and 40888 transitions. [2018-09-14 17:46:42,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:46:42,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 277 [2018-09-14 17:46:42,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:46:42,142 INFO L225 Difference]: With dead ends: 28543 [2018-09-14 17:46:42,143 INFO L226 Difference]: Without dead ends: 10758 [2018-09-14 17:46:42,224 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 552 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-09-14 17:46:42,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10758 states. [2018-09-14 17:46:42,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10758 to 8457. [2018-09-14 17:46:42,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8457 states. [2018-09-14 17:46:42,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8457 states to 8457 states and 10310 transitions. [2018-09-14 17:46:42,429 INFO L78 Accepts]: Start accepts. Automaton has 8457 states and 10310 transitions. Word has length 277 [2018-09-14 17:46:42,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:46:42,429 INFO L480 AbstractCegarLoop]: Abstraction has 8457 states and 10310 transitions. [2018-09-14 17:46:42,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:46:42,430 INFO L276 IsEmpty]: Start isEmpty. Operand 8457 states and 10310 transitions. [2018-09-14 17:46:42,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-09-14 17:46:42,435 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:46:42,435 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, 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] [2018-09-14 17:46:42,436 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:46:42,436 INFO L82 PathProgramCache]: Analyzing trace with hash -2141796424, now seen corresponding path program 1 times [2018-09-14 17:46:42,436 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:46:42,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:46:42,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:46:42,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:46:42,437 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:46:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:46:43,105 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 17 [2018-09-14 17:46:43,211 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:46:43,211 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:46:43,211 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:46:43,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:46:43,221 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:46:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:46:43,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:46:49,536 WARN L178 SmtUtils]: Spent 6.05 s on a formula simplification that was a NOOP. DAG size: 38 [2018-09-14 17:46:49,787 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:46:49,788 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:47:00,481 WARN L178 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 34 DAG size of output: 23 [2018-09-14 17:47:01,242 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:47:01,263 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:47:01,263 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-09-14 17:47:01,264 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:47:01,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:47:01,264 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:47:01,264 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=110, Unknown=4, NotChecked=0, Total=156 [2018-09-14 17:47:01,265 INFO L87 Difference]: Start difference. First operand 8457 states and 10310 transitions. Second operand 6 states. [2018-09-14 17:47:15,806 WARN L178 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 29 DAG size of output: 15 Received shutdown request... [2018-09-14 17:49:32,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:49:32,181 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:49:32,187 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:49:32,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:49:32 BoogieIcfgContainer [2018-09-14 17:49:32,188 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:49:32,189 INFO L168 Benchmark]: Toolchain (without parser) took 260234.32 ms. Allocated memory was 1.5 GB in the beginning and 3.0 GB in the end (delta: 1.5 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -542.1 MB). Peak memory consumption was 912.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:49:32,190 INFO L168 Benchmark]: CDTParser took 0.23 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 17:49:32,190 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1261.36 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-09-14 17:49:32,191 INFO L168 Benchmark]: Boogie Procedure Inliner took 227.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:49:32,193 INFO L168 Benchmark]: Boogie Preprocessor took 669.61 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 872.4 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 89.6 MB. Max. memory is 7.1 GB. [2018-09-14 17:49:32,194 INFO L168 Benchmark]: RCFGBuilder took 7577.14 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 298.8 MB). Peak memory consumption was 298.8 MB. Max. memory is 7.1 GB. [2018-09-14 17:49:32,194 INFO L168 Benchmark]: TraceAbstraction took 250491.93 ms. Allocated memory was 2.4 GB in the beginning and 3.0 GB in the end (delta: 582.0 MB). Free memory was 2.0 GB in the beginning and 2.0 GB in the end (delta: 20.8 MB). Peak memory consumption was 602.7 MB. Max. memory is 7.1 GB. [2018-09-14 17:49:32,204 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 1261.36 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 227.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 669.61 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 872.4 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 89.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7577.14 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 298.8 MB). Peak memory consumption was 298.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 250491.93 ms. Allocated memory was 2.4 GB in the beginning and 3.0 GB in the end (delta: 582.0 MB). Free memory was 2.0 GB in the beginning and 2.0 GB in the end (delta: 20.8 MB). Peak memory consumption was 602.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 142). Cancelled while BasicCegarLoop was constructing difference of abstraction (8457states) and FLOYD_HOARE automaton (currently 7 states, 6 states before enhancement), while ReachableStatesComputation was computing reachable states (2652 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 250.4s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 215.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1760 SDtfs, 8488 SDslu, 1502 SDs, 0 SdLazy, 17723 SolverSat, 3723 SolverUnsat, 64 SolverUnknown, 0 SolverNotchecked, 193.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1941 GetRequests, 1867 SyntacticMatches, 11 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 42.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13335occurred in iteration=6, 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: 1.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 3067 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 31.4s InterpolantComputationTime, 2294 NumberOfCodeBlocks, 2294 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 3213 ConstructedInterpolants, 291 QuantifiedInterpolants, 6541373 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1539 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 16 InterpolantComputations, 9 PerfectInterpolantSequences, 790/1098 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/Problem15_label19_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-49-32-219.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label19_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-49-32-219.csv Completed graceful shutdown