java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label53_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:25:36,968 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:25:36,973 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:25:36,986 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:25:36,986 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:25:36,987 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:25:36,988 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:25:36,990 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:25:36,992 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:25:36,993 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:25:36,994 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:25:36,994 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:25:36,995 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:25:36,996 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:25:36,997 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:25:36,998 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:25:36,999 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:25:37,000 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:25:37,003 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:25:37,004 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:25:37,005 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:25:37,006 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:25:37,009 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:25:37,009 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:25:37,010 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:25:37,011 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:25:37,012 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:25:37,012 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:25:37,013 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:25:37,015 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:25:37,015 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:25:37,016 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:25:37,016 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:25:37,016 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:25:37,017 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:25:37,018 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:25:37,018 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 19:25:37,034 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:25:37,034 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:25:37,035 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:25:37,035 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:25:37,035 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:25:37,036 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:25:37,036 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:25:37,036 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:25:37,036 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:25:37,036 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:25:37,037 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:25:37,037 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:25:37,037 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:25:37,038 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:25:37,038 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:25:37,038 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:25:37,038 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:25:37,039 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:25:37,039 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:25:37,039 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:25:37,039 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:25:37,039 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:25:37,039 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:25:37,040 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:25:37,040 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:25:37,040 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:25:37,040 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:25:37,040 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:25:37,041 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:25:37,041 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:25:37,041 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:25:37,041 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:25:37,041 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:25:37,042 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:25:37,042 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:25:37,085 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:25:37,099 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:25:37,104 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:25:37,106 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:25:37,107 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:25:37,108 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label53_true-unreach-call.c [2018-11-12 19:25:37,182 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2852174d/ece01046a4ab4f0d965c3dc8143987bd/FLAG3e58e7e34 [2018-11-12 19:25:37,869 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:25:37,870 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label53_true-unreach-call.c [2018-11-12 19:25:37,900 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2852174d/ece01046a4ab4f0d965c3dc8143987bd/FLAG3e58e7e34 [2018-11-12 19:25:37,915 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2852174d/ece01046a4ab4f0d965c3dc8143987bd [2018-11-12 19:25:37,925 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:25:37,927 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:25:37,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:25:37,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:25:37,934 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:25:37,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:25:37" (1/1) ... [2018-11-12 19:25:37,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243c94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:25:37, skipping insertion in model container [2018-11-12 19:25:37,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:25:37" (1/1) ... [2018-11-12 19:25:37,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:25:38,054 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:25:38,903 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:25:38,908 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:25:39,153 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:25:39,176 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:25:39,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:25:39 WrapperNode [2018-11-12 19:25:39,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:25:39,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:25:39,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:25:39,178 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:25:39,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:25:39" (1/1) ... [2018-11-12 19:25:39,362 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:25:39" (1/1) ... [2018-11-12 19:25:39,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:25:39,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:25:39,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:25:39,383 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:25:39,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:25:39" (1/1) ... [2018-11-12 19:25:39,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:25:39" (1/1) ... [2018-11-12 19:25:39,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:25:39" (1/1) ... [2018-11-12 19:25:39,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:25:39" (1/1) ... [2018-11-12 19:25:39,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:25:39" (1/1) ... [2018-11-12 19:25:39,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:25:39" (1/1) ... [2018-11-12 19:25:39,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:25:39" (1/1) ... [2018-11-12 19:25:39,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:25:39,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:25:39,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:25:39,544 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:25:39,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:25:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:25:39,614 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:25:39,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:25:39,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:25:39,615 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:25:39,615 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:25:39,615 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:25:39,616 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:25:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:25:39,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:25:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:25:39,617 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:25:47,187 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:25:47,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:25:47 BoogieIcfgContainer [2018-11-12 19:25:47,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:25:47,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:25:47,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:25:47,194 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:25:47,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:25:37" (1/3) ... [2018-11-12 19:25:47,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aaa36bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:25:47, skipping insertion in model container [2018-11-12 19:25:47,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:25:39" (2/3) ... [2018-11-12 19:25:47,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aaa36bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:25:47, skipping insertion in model container [2018-11-12 19:25:47,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:25:47" (3/3) ... [2018-11-12 19:25:47,198 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label53_true-unreach-call.c [2018-11-12 19:25:47,209 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:25:47,219 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:25:47,238 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:25:47,290 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:25:47,290 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:25:47,290 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:25:47,290 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:25:47,290 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:25:47,291 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:25:47,291 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:25:47,291 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:25:47,352 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-12 19:25:47,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-12 19:25:47,363 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:25:47,365 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:25:47,368 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:25:47,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:25:47,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1710890852, now seen corresponding path program 1 times [2018-11-12 19:25:47,380 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:25:47,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:25:47,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:25:47,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:25:47,427 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:25:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:25:47,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:25:47,908 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:25:47,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 19:25:47,909 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:25:47,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:25:47,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:25:47,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:25:47,937 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-12 19:25:51,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:25:51,620 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-12 19:25:51,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:25:51,622 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2018-11-12 19:25:51,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:25:51,651 INFO L225 Difference]: With dead ends: 1156 [2018-11-12 19:25:51,652 INFO L226 Difference]: Without dead ends: 744 [2018-11-12 19:25:51,665 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:25:51,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-12 19:25:51,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-12 19:25:51,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-12 19:25:51,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-11-12 19:25:51,819 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 44 [2018-11-12 19:25:51,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:25:51,820 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-11-12 19:25:51,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:25:51,821 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-11-12 19:25:51,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-12 19:25:51,831 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:25:51,833 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:25:51,834 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:25:51,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:25:51,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1470767914, now seen corresponding path program 1 times [2018-11-12 19:25:51,835 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:25:51,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:25:51,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:25:51,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:25:51,838 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:25:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:25:52,226 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:25:52,227 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:25:52,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 19:25:52,227 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:25:52,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 19:25:52,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 19:25:52,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 19:25:52,230 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 5 states. [2018-11-12 19:25:57,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:25:57,336 INFO L93 Difference]: Finished difference Result 2194 states and 4083 transitions. [2018-11-12 19:25:57,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:25:57,337 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-11-12 19:25:57,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:25:57,349 INFO L225 Difference]: With dead ends: 2194 [2018-11-12 19:25:57,350 INFO L226 Difference]: Without dead ends: 1456 [2018-11-12 19:25:57,353 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:25:57,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2018-11-12 19:25:57,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1436. [2018-11-12 19:25:57,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2018-11-12 19:25:57,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2550 transitions. [2018-11-12 19:25:57,418 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2550 transitions. Word has length 114 [2018-11-12 19:25:57,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:25:57,418 INFO L480 AbstractCegarLoop]: Abstraction has 1436 states and 2550 transitions. [2018-11-12 19:25:57,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 19:25:57,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2550 transitions. [2018-11-12 19:25:57,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-12 19:25:57,424 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:25:57,424 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:25:57,425 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:25:57,425 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:25:57,425 INFO L82 PathProgramCache]: Analyzing trace with hash -183601941, now seen corresponding path program 1 times [2018-11-12 19:25:57,425 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:25:57,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:25:57,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:25:57,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:25:57,427 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:25:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:25:57,908 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:25:57,908 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:25:57,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:25:57,909 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:25:57,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:25:57,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:25:57,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:25:57,910 INFO L87 Difference]: Start difference. First operand 1436 states and 2550 transitions. Second operand 6 states. [2018-11-12 19:26:02,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:26:02,398 INFO L93 Difference]: Finished difference Result 3936 states and 7024 transitions. [2018-11-12 19:26:02,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:26:02,399 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-11-12 19:26:02,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:26:02,423 INFO L225 Difference]: With dead ends: 3936 [2018-11-12 19:26:02,424 INFO L226 Difference]: Without dead ends: 2506 [2018-11-12 19:26:02,432 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:26:02,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2018-11-12 19:26:02,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2479. [2018-11-12 19:26:02,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2479 states. [2018-11-12 19:26:02,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3996 transitions. [2018-11-12 19:26:02,527 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3996 transitions. Word has length 143 [2018-11-12 19:26:02,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:26:02,527 INFO L480 AbstractCegarLoop]: Abstraction has 2479 states and 3996 transitions. [2018-11-12 19:26:02,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:26:02,530 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3996 transitions. [2018-11-12 19:26:02,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-11-12 19:26:02,535 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:26:02,535 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:26:02,535 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:26:02,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:26:02,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1245396135, now seen corresponding path program 1 times [2018-11-12 19:26:02,536 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:26:02,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:26:02,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:26:02,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:26:02,537 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:26:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:26:02,801 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:26:02,801 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:26:02,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:26:02,802 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:26:02,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:26:02,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:26:02,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:26:02,803 INFO L87 Difference]: Start difference. First operand 2479 states and 3996 transitions. Second operand 6 states. [2018-11-12 19:26:06,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:26:06,903 INFO L93 Difference]: Finished difference Result 6050 states and 9896 transitions. [2018-11-12 19:26:06,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:26:06,910 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2018-11-12 19:26:06,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:26:06,937 INFO L225 Difference]: With dead ends: 6050 [2018-11-12 19:26:06,937 INFO L226 Difference]: Without dead ends: 3577 [2018-11-12 19:26:06,949 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:26:06,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2018-11-12 19:26:07,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 3545. [2018-11-12 19:26:07,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2018-11-12 19:26:07,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4965 transitions. [2018-11-12 19:26:07,055 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4965 transitions. Word has length 161 [2018-11-12 19:26:07,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:26:07,056 INFO L480 AbstractCegarLoop]: Abstraction has 3545 states and 4965 transitions. [2018-11-12 19:26:07,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:26:07,056 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4965 transitions. [2018-11-12 19:26:07,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-11-12 19:26:07,061 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:26:07,061 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:26:07,061 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:26:07,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:26:07,062 INFO L82 PathProgramCache]: Analyzing trace with hash -282881664, now seen corresponding path program 1 times [2018-11-12 19:26:07,062 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:26:07,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:26:07,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:26:07,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:26:07,063 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:26:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:26:07,336 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 104 proven. 35 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:26:07,337 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:26:07,337 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:26:07,338 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 245 with the following transitions: [2018-11-12 19:26:07,340 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [431], [433], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:26:07,398 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:26:07,399 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:26:08,287 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:26:08,289 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Performed 2356 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2356 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 19:26:08,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:26:08,336 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:26:09,283 INFO L227 lantSequenceWeakener]: Weakened 222 states. On average, predicates are now at 77.91% of their original sizes. [2018-11-12 19:26:09,285 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:26:11,177 INFO L415 sIntCurrentIteration]: We unified 243 AI predicates to 243 [2018-11-12 19:26:11,178 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:26:11,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:26:11,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2018-11-12 19:26:11,179 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:26:11,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 19:26:11,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 19:26:11,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-12 19:26:11,181 INFO L87 Difference]: Start difference. First operand 3545 states and 4965 transitions. Second operand 11 states. [2018-11-12 19:26:16,873 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:26:38,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:26:38,795 INFO L93 Difference]: Finished difference Result 7427 states and 10353 transitions. [2018-11-12 19:26:38,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-12 19:26:38,795 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 244 [2018-11-12 19:26:38,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:26:38,814 INFO L225 Difference]: With dead ends: 7427 [2018-11-12 19:26:38,814 INFO L226 Difference]: Without dead ends: 3888 [2018-11-12 19:26:38,827 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 248 GetRequests, 198 SyntacticMatches, 36 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-11-12 19:26:38,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2018-11-12 19:26:38,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3883. [2018-11-12 19:26:38,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3883 states. [2018-11-12 19:26:38,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3883 states to 3883 states and 5311 transitions. [2018-11-12 19:26:38,921 INFO L78 Accepts]: Start accepts. Automaton has 3883 states and 5311 transitions. Word has length 244 [2018-11-12 19:26:38,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:26:38,922 INFO L480 AbstractCegarLoop]: Abstraction has 3883 states and 5311 transitions. [2018-11-12 19:26:38,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 19:26:38,922 INFO L276 IsEmpty]: Start isEmpty. Operand 3883 states and 5311 transitions. [2018-11-12 19:26:38,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-11-12 19:26:38,929 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:26:38,930 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:26:38,930 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:26:38,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:26:38,931 INFO L82 PathProgramCache]: Analyzing trace with hash 220813762, now seen corresponding path program 1 times [2018-11-12 19:26:38,931 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:26:38,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:26:38,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:26:38,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:26:38,933 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:26:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:26:39,266 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-12 19:26:39,460 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 183 proven. 115 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-11-12 19:26:39,460 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:26:39,461 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:26:39,461 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 337 with the following transitions: [2018-11-12 19:26:39,461 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [431], [433], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:26:39,468 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:26:39,469 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:26:39,537 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:26:40,061 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:26:40,062 INFO L272 AbstractInterpreter]: Visited 139 different actions 404 times. Merged at 5 different actions 9 times. Never widened. Performed 5841 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5841 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:26:40,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:26:40,107 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:26:40,754 INFO L227 lantSequenceWeakener]: Weakened 92 states. On average, predicates are now at 78.06% of their original sizes. [2018-11-12 19:26:40,754 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:26:42,154 INFO L415 sIntCurrentIteration]: We unified 335 AI predicates to 335 [2018-11-12 19:26:42,155 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:26:42,155 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:26:42,155 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [7] total 23 [2018-11-12 19:26:42,155 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:26:42,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 19:26:42,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 19:26:42,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2018-11-12 19:26:42,157 INFO L87 Difference]: Start difference. First operand 3883 states and 5311 transitions. Second operand 18 states. [2018-11-12 19:27:12,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:27:12,692 INFO L93 Difference]: Finished difference Result 8610 states and 11687 transitions. [2018-11-12 19:27:12,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-12 19:27:12,693 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 336 [2018-11-12 19:27:12,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:27:12,713 INFO L225 Difference]: With dead ends: 8610 [2018-11-12 19:27:12,713 INFO L226 Difference]: Without dead ends: 5071 [2018-11-12 19:27:12,726 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 345 GetRequests, 304 SyntacticMatches, 15 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2018-11-12 19:27:12,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5071 states. [2018-11-12 19:27:12,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5071 to 4839. [2018-11-12 19:27:12,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4839 states. [2018-11-12 19:27:12,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4839 states to 4839 states and 6322 transitions. [2018-11-12 19:27:12,855 INFO L78 Accepts]: Start accepts. Automaton has 4839 states and 6322 transitions. Word has length 336 [2018-11-12 19:27:12,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:27:12,855 INFO L480 AbstractCegarLoop]: Abstraction has 4839 states and 6322 transitions. [2018-11-12 19:27:12,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 19:27:12,856 INFO L276 IsEmpty]: Start isEmpty. Operand 4839 states and 6322 transitions. [2018-11-12 19:27:12,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-11-12 19:27:12,865 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:27:12,866 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:27:12,866 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:27:12,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:27:12,866 INFO L82 PathProgramCache]: Analyzing trace with hash 85445306, now seen corresponding path program 1 times [2018-11-12 19:27:12,867 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:27:12,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:27:12,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:27:12,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:27:12,868 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:27:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:27:14,666 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 242 proven. 69 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-11-12 19:27:14,667 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:27:14,667 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:27:14,667 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 373 with the following transitions: [2018-11-12 19:27:14,668 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [431], [433], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:27:14,672 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:27:14,672 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:27:14,816 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:27:15,219 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:27:15,219 INFO L272 AbstractInterpreter]: Visited 139 different actions 404 times. Merged at 5 different actions 9 times. Never widened. Performed 7287 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7287 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:27:15,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:27:15,224 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:27:15,765 INFO L227 lantSequenceWeakener]: Weakened 92 states. On average, predicates are now at 78.06% of their original sizes. [2018-11-12 19:27:15,765 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:27:16,210 INFO L415 sIntCurrentIteration]: We unified 371 AI predicates to 371 [2018-11-12 19:27:16,211 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:27:16,211 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:27:16,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [13] total 30 [2018-11-12 19:27:16,211 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:27:16,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-12 19:27:16,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-12 19:27:16,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2018-11-12 19:27:16,213 INFO L87 Difference]: Start difference. First operand 4839 states and 6322 transitions. Second operand 19 states. [2018-11-12 19:28:12,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:28:12,134 INFO L93 Difference]: Finished difference Result 9647 states and 12829 transitions. [2018-11-12 19:28:12,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-12 19:28:12,134 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 372 [2018-11-12 19:28:12,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:28:12,154 INFO L225 Difference]: With dead ends: 9647 [2018-11-12 19:28:12,155 INFO L226 Difference]: Without dead ends: 5756 [2018-11-12 19:28:12,167 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 381 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2018-11-12 19:28:12,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5756 states. [2018-11-12 19:28:12,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5756 to 5518. [2018-11-12 19:28:12,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5518 states. [2018-11-12 19:28:12,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5518 states to 5518 states and 7072 transitions. [2018-11-12 19:28:12,289 INFO L78 Accepts]: Start accepts. Automaton has 5518 states and 7072 transitions. Word has length 372 [2018-11-12 19:28:12,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:28:12,290 INFO L480 AbstractCegarLoop]: Abstraction has 5518 states and 7072 transitions. [2018-11-12 19:28:12,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-12 19:28:12,290 INFO L276 IsEmpty]: Start isEmpty. Operand 5518 states and 7072 transitions. [2018-11-12 19:28:12,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2018-11-12 19:28:12,307 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:28:12,307 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:28:12,308 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:28:12,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:28:12,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1174694694, now seen corresponding path program 1 times [2018-11-12 19:28:12,308 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:28:12,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:28:12,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:28:12,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:28:12,310 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:28:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:28:13,216 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 214 proven. 35 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-11-12 19:28:13,216 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:28:13,216 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:28:13,216 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 485 with the following transitions: [2018-11-12 19:28:13,217 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [431], [433], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:28:13,222 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:28:13,222 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:28:13,726 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:28:13,727 INFO L272 AbstractInterpreter]: Visited 249 different actions 494 times. Merged at 5 different actions 7 times. Never widened. Performed 8725 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8725 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:28:13,732 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:28:13,732 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:28:14,334 INFO L227 lantSequenceWeakener]: Weakened 112 states. On average, predicates are now at 78.77% of their original sizes. [2018-11-12 19:28:14,334 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:28:15,266 INFO L415 sIntCurrentIteration]: We unified 483 AI predicates to 483 [2018-11-12 19:28:15,266 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:28:15,266 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:28:15,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [5] total 25 [2018-11-12 19:28:15,267 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:28:15,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-12 19:28:15,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-12 19:28:15,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2018-11-12 19:28:15,269 INFO L87 Difference]: Start difference. First operand 5518 states and 7072 transitions. Second operand 22 states. [2018-11-12 19:28:18,760 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:28:52,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:28:52,700 INFO L93 Difference]: Finished difference Result 10406 states and 13676 transitions. [2018-11-12 19:28:52,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-12 19:28:52,700 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 484 [2018-11-12 19:28:52,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:28:52,719 INFO L225 Difference]: With dead ends: 10406 [2018-11-12 19:28:52,720 INFO L226 Difference]: Without dead ends: 6154 [2018-11-12 19:28:52,731 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 499 GetRequests, 431 SyntacticMatches, 32 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=264, Invalid=1142, Unknown=0, NotChecked=0, Total=1406 [2018-11-12 19:28:52,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6154 states. [2018-11-12 19:28:52,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6154 to 6149. [2018-11-12 19:28:52,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6149 states. [2018-11-12 19:28:52,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6149 states to 6149 states and 7741 transitions. [2018-11-12 19:28:52,869 INFO L78 Accepts]: Start accepts. Automaton has 6149 states and 7741 transitions. Word has length 484 [2018-11-12 19:28:52,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:28:52,870 INFO L480 AbstractCegarLoop]: Abstraction has 6149 states and 7741 transitions. [2018-11-12 19:28:52,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-12 19:28:52,870 INFO L276 IsEmpty]: Start isEmpty. Operand 6149 states and 7741 transitions. [2018-11-12 19:28:52,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2018-11-12 19:28:52,887 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:28:52,887 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:28:52,888 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:28:52,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:28:52,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1934826678, now seen corresponding path program 1 times [2018-11-12 19:28:52,888 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:28:52,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:28:52,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:28:52,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:28:52,890 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:28:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:28:53,516 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 214 proven. 35 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-11-12 19:28:53,516 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:28:53,517 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:28:53,517 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 493 with the following transitions: [2018-11-12 19:28:53,517 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [431], [433], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:28:53,522 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:28:53,522 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:28:55,706 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:28:55,707 INFO L272 AbstractInterpreter]: Visited 257 different actions 2265 times. Merged at 5 different actions 40 times. Widened at 1 different actions 4 times. Performed 37743 root evaluator evaluations with a maximum evaluation depth of 6. Performed 37743 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:28:55,711 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:28:55,711 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:28:56,804 INFO L227 lantSequenceWeakener]: Weakened 139 states. On average, predicates are now at 78.45% of their original sizes. [2018-11-12 19:28:56,804 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:28:57,198 INFO L415 sIntCurrentIteration]: We unified 491 AI predicates to 491 [2018-11-12 19:28:57,198 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:28:57,198 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:28:57,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [5] total 27 [2018-11-12 19:28:57,198 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:28:57,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-12 19:28:57,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-12 19:28:57,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2018-11-12 19:28:57,200 INFO L87 Difference]: Start difference. First operand 6149 states and 7741 transitions. Second operand 24 states. [2018-11-12 19:28:59,307 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:29:14,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:29:14,307 INFO L93 Difference]: Finished difference Result 11042 states and 14309 transitions. [2018-11-12 19:29:14,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-12 19:29:14,307 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 492 [2018-11-12 19:29:14,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:29:14,325 INFO L225 Difference]: With dead ends: 11042 [2018-11-12 19:29:14,325 INFO L226 Difference]: Without dead ends: 6790 [2018-11-12 19:29:14,337 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 505 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=287, Invalid=1119, Unknown=0, NotChecked=0, Total=1406 [2018-11-12 19:29:14,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6790 states. [2018-11-12 19:29:14,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6790 to 6782. [2018-11-12 19:29:14,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6782 states. [2018-11-12 19:29:14,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6782 states to 6782 states and 8416 transitions. [2018-11-12 19:29:14,465 INFO L78 Accepts]: Start accepts. Automaton has 6782 states and 8416 transitions. Word has length 492 [2018-11-12 19:29:14,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:29:14,466 INFO L480 AbstractCegarLoop]: Abstraction has 6782 states and 8416 transitions. [2018-11-12 19:29:14,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-12 19:29:14,466 INFO L276 IsEmpty]: Start isEmpty. Operand 6782 states and 8416 transitions. [2018-11-12 19:29:14,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2018-11-12 19:29:14,484 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:29:14,485 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:29:14,485 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:29:14,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:29:14,485 INFO L82 PathProgramCache]: Analyzing trace with hash 913991280, now seen corresponding path program 1 times [2018-11-12 19:29:14,486 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:29:14,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:29:14,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:29:14,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:29:14,487 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:29:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:29:15,375 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 100 proven. 193 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:29:15,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:29:15,375 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:29:15,375 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 509 with the following transitions: [2018-11-12 19:29:15,375 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [431], [433], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1288], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:29:15,378 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:29:15,378 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:29:15,850 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:29:16,905 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:29:16,906 INFO L272 AbstractInterpreter]: Visited 248 different actions 1230 times. Merged at 7 different actions 34 times. Widened at 1 different actions 1 times. Performed 19385 root evaluator evaluations with a maximum evaluation depth of 6. Performed 19385 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 19:29:16,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:29:16,916 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... [2018-11-12 19:29:17,520 INFO L227 lantSequenceWeakener]: Weakened 40 states. On average, predicates are now at 81.14% of their original sizes. [2018-11-12 19:29:17,520 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:29:17,531 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:29:17,536 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:29:17,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:29:17 BoogieIcfgContainer [2018-11-12 19:29:17,536 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:29:17,537 INFO L168 Benchmark]: Toolchain (without parser) took 219610.77 ms. Allocated memory was 1.5 GB in the beginning and 5.3 GB in the end (delta: 3.8 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -796.1 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-11-12 19:29:17,538 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:29:17,538 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1248.72 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-12 19:29:17,539 INFO L168 Benchmark]: Boogie Procedure Inliner took 204.42 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -876.8 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2018-11-12 19:29:17,540 INFO L168 Benchmark]: Boogie Preprocessor took 161.42 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:29:17,541 INFO L168 Benchmark]: RCFGBuilder took 7643.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 256.0 MB). Peak memory consumption was 256.0 MB. Max. memory is 7.1 GB. [2018-11-12 19:29:17,541 INFO L168 Benchmark]: TraceAbstraction took 210347.29 ms. Allocated memory was 2.3 GB in the beginning and 5.3 GB in the end (delta: 3.0 GB). Free memory was 2.0 GB in the beginning and 2.2 GB in the end (delta: -259.8 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-11-12 19:29:17,546 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1248.72 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 204.42 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -876.8 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 161.42 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 7643.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 256.0 MB). Peak memory consumption was 256.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210347.29 ms. Allocated memory was 2.3 GB in the beginning and 5.3 GB in the end (delta: 3.0 GB). Free memory was 2.0 GB in the beginning and 2.2 GB in the end (delta: -259.8 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 118). Cancelled while BasicCegarLoop was analyzing trace of length 509 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 3 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 210.2s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 186.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2425 SDtfs, 22771 SDslu, 1427 SDs, 0 SdLazy, 29794 SolverSat, 3231 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 80.0s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 2012 GetRequests, 1764 SyntacticMatches, 88 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1841 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6782occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.4s AbstIntTime, 6 AbstIntIterations, 6 AbstIntStrong, 0.9978131983123937 AbsIntWeakeningRatio, 0.07407407407407407 AbsIntAvgWeakeningVarsNumRemoved, 11.925925925925926 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 567 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.7s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 2390 NumberOfCodeBlocks, 2390 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 2381 ConstructedInterpolants, 0 QuantifiedInterpolants, 3279796 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 1450/1739 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown