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/Problem15_label33_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:08:23,184 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:08:23,186 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:08:23,202 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:08:23,202 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:08:23,203 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:08:23,205 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:08:23,208 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:08:23,211 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:08:23,212 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:08:23,219 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:08:23,219 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:08:23,220 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:08:23,225 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:08:23,229 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:08:23,230 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:08:23,234 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:08:23,236 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:08:23,239 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:08:23,241 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:08:23,245 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:08:23,247 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:08:23,249 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:08:23,250 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:08:23,250 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:08:23,251 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:08:23,253 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:08:23,254 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:08:23,257 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:08:23,258 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:08:23,258 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:08:23,259 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:08:23,259 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:08:23,259 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:08:23,262 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:08:23,262 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:08:23,263 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 [2018-11-07 18:08:23,292 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:08:23,293 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:08:23,295 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:08:23,295 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:08:23,295 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:08:23,295 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:08:23,295 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:08:23,296 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:08:23,296 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:08:23,296 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:08:23,296 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:08:23,296 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:08:23,297 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:08:23,298 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:08:23,298 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:08:23,298 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:08:23,298 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:08:23,300 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:08:23,300 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:08:23,300 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:08:23,301 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:08:23,301 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:08:23,301 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:08:23,301 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:08:23,301 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:08:23,302 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:08:23,302 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:08:23,302 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:08:23,303 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:08:23,303 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:08:23,303 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:08:23,303 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:08:23,303 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:08:23,303 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:08:23,304 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:08:23,354 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:08:23,372 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:08:23,376 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:08:23,378 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:08:23,379 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:08:23,380 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label33_false-unreach-call.c [2018-11-07 18:08:23,439 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08a13d23e/51956512271a48ceb91cffaf88275909/FLAGe6479b378 [2018-11-07 18:08:24,115 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:08:24,116 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label33_false-unreach-call.c [2018-11-07 18:08:24,137 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08a13d23e/51956512271a48ceb91cffaf88275909/FLAGe6479b378 [2018-11-07 18:08:24,158 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08a13d23e/51956512271a48ceb91cffaf88275909 [2018-11-07 18:08:24,171 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:08:24,173 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:08:24,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:08:24,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:08:24,182 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:08:24,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:08:24" (1/1) ... [2018-11-07 18:08:24,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bbdaad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:24, skipping insertion in model container [2018-11-07 18:08:24,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:08:24" (1/1) ... [2018-11-07 18:08:24,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:08:24,318 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:08:25,165 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:08:25,169 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:08:25,505 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:08:25,528 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:08:25,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:25 WrapperNode [2018-11-07 18:08:25,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:08:25,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:08:25,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:08:25,530 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:08:25,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:25" (1/1) ... [2018-11-07 18:08:25,764 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:25" (1/1) ... [2018-11-07 18:08:25,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:08:25,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:08:25,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:08:25,779 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:08:25,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:25" (1/1) ... [2018-11-07 18:08:25,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:25" (1/1) ... [2018-11-07 18:08:25,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:25" (1/1) ... [2018-11-07 18:08:25,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:25" (1/1) ... [2018-11-07 18:08:25,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:25" (1/1) ... [2018-11-07 18:08:25,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:25" (1/1) ... [2018-11-07 18:08:25,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:25" (1/1) ... [2018-11-07 18:08:25,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:08:25,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:08:25,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:08:25,915 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:08:25,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:25" (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 [2018-11-07 18:08:25,978 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:08:25,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:08:25,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:08:25,979 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 18:08:25,979 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 18:08:25,979 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:08:25,979 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:08:25,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:08:25,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:08:25,980 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:08:25,981 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:08:32,158 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:08:32,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:08:32 BoogieIcfgContainer [2018-11-07 18:08:32,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:08:32,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:08:32,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:08:32,164 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:08:32,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:08:24" (1/3) ... [2018-11-07 18:08:32,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686030dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:08:32, skipping insertion in model container [2018-11-07 18:08:32,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:25" (2/3) ... [2018-11-07 18:08:32,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686030dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:08:32, skipping insertion in model container [2018-11-07 18:08:32,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:08:32" (3/3) ... [2018-11-07 18:08:32,168 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label33_false-unreach-call.c [2018-11-07 18:08:32,178 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:08:32,188 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:08:32,206 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:08:32,245 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:08:32,245 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:08:32,246 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:08:32,246 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:08:32,246 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:08:32,246 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:08:32,246 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:08:32,247 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:08:32,278 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 18:08:32,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-07 18:08:32,290 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:08:32,291 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] [2018-11-07 18:08:32,295 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:08:32,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:08:32,302 INFO L82 PathProgramCache]: Analyzing trace with hash 18376625, now seen corresponding path program 1 times [2018-11-07 18:08:32,305 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:08:32,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:32,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:08:32,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:32,353 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:08:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:08:32,791 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 18:08:32,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:08:32,804 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:08:32,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:08:32,804 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:08:32,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:08:32,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:08:32,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:08:32,829 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 18:08:41,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:08:41,130 INFO L93 Difference]: Finished difference Result 1550 states and 2835 transitions. [2018-11-07 18:08:41,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:08:41,133 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-11-07 18:08:41,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:08:41,161 INFO L225 Difference]: With dead ends: 1550 [2018-11-07 18:08:41,161 INFO L226 Difference]: Without dead ends: 1106 [2018-11-07 18:08:41,171 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:08:41,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2018-11-07 18:08:41,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 762. [2018-11-07 18:08:41,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2018-11-07 18:08:41,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1263 transitions. [2018-11-07 18:08:41,292 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1263 transitions. Word has length 29 [2018-11-07 18:08:41,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:08:41,293 INFO L480 AbstractCegarLoop]: Abstraction has 762 states and 1263 transitions. [2018-11-07 18:08:41,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:08:41,293 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1263 transitions. [2018-11-07 18:08:41,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-07 18:08:41,303 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:08:41,303 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:08:41,304 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:08:41,304 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:08:41,304 INFO L82 PathProgramCache]: Analyzing trace with hash -725356388, now seen corresponding path program 1 times [2018-11-07 18:08:41,304 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:08:41,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:41,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:08:41,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:41,306 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:08:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:08:41,660 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:08:41,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:08:41,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 18:08:41,661 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:08:41,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 18:08:41,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 18:08:41,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 18:08:41,664 INFO L87 Difference]: Start difference. First operand 762 states and 1263 transitions. Second operand 5 states. [2018-11-07 18:08:46,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:08:46,915 INFO L93 Difference]: Finished difference Result 2248 states and 3762 transitions. [2018-11-07 18:08:46,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 18:08:46,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2018-11-07 18:08:46,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:08:46,931 INFO L225 Difference]: With dead ends: 2248 [2018-11-07 18:08:46,932 INFO L226 Difference]: Without dead ends: 1492 [2018-11-07 18:08:46,936 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:08:46,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2018-11-07 18:08:47,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1457. [2018-11-07 18:08:47,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2018-11-07 18:08:47,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2152 transitions. [2018-11-07 18:08:47,021 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2152 transitions. Word has length 102 [2018-11-07 18:08:47,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:08:47,022 INFO L480 AbstractCegarLoop]: Abstraction has 1457 states and 2152 transitions. [2018-11-07 18:08:47,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 18:08:47,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2152 transitions. [2018-11-07 18:08:47,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-11-07 18:08:47,028 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:08:47,028 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:08:47,029 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:08:47,029 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:08:47,029 INFO L82 PathProgramCache]: Analyzing trace with hash -2080180052, now seen corresponding path program 1 times [2018-11-07 18:08:47,029 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:08:47,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:47,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:08:47,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:47,031 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:08:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:08:47,782 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:08:47,783 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:08:47,783 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:08:47,784 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 111 with the following transitions: [2018-11-07 18:08:47,786 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 18:08:47,846 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:08:47,846 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:08:48,399 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:08:48,400 INFO L272 AbstractInterpreter]: Visited 85 different actions 85 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 18:08:48,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:08:48,433 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:08:48,733 INFO L227 lantSequenceWeakener]: Weakened 104 states. On average, predicates are now at 77.66% of their original sizes. [2018-11-07 18:08:48,733 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:08:49,018 INFO L415 sIntCurrentIteration]: We unified 109 AI predicates to 109 [2018-11-07 18:08:49,019 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:08:49,020 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:08:49,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-11-07 18:08:49,020 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:08:49,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 18:08:49,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 18:08:49,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 18:08:49,022 INFO L87 Difference]: Start difference. First operand 1457 states and 2152 transitions. Second operand 7 states. [2018-11-07 18:08:51,239 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:09:18,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:09:18,161 INFO L93 Difference]: Finished difference Result 3218 states and 4681 transitions. [2018-11-07 18:09:18,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:09:18,161 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2018-11-07 18:09:18,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:09:18,170 INFO L225 Difference]: With dead ends: 3218 [2018-11-07 18:09:18,170 INFO L226 Difference]: Without dead ends: 1767 [2018-11-07 18:09:18,175 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 110 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:09:18,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2018-11-07 18:09:18,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1765. [2018-11-07 18:09:18,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1765 states. [2018-11-07 18:09:18,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1765 states to 1765 states and 2468 transitions. [2018-11-07 18:09:18,223 INFO L78 Accepts]: Start accepts. Automaton has 1765 states and 2468 transitions. Word has length 110 [2018-11-07 18:09:18,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:09:18,224 INFO L480 AbstractCegarLoop]: Abstraction has 1765 states and 2468 transitions. [2018-11-07 18:09:18,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 18:09:18,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1765 states and 2468 transitions. [2018-11-07 18:09:18,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-11-07 18:09:18,228 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:09:18,228 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 18:09:18,229 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:09:18,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:09:18,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1175706442, now seen corresponding path program 1 times [2018-11-07 18:09:18,229 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:09:18,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:09:18,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:09:18,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:09:18,231 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:09:18,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:09:19,430 WARN L179 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-11-07 18:09:19,610 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:09:19,611 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:09:19,611 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:09:19,611 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 207 with the following transitions: [2018-11-07 18:09:19,611 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 18:09:19,617 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:09:19,617 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:09:19,690 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:09:20,409 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:09:20,409 INFO L272 AbstractInterpreter]: Visited 104 different actions 692 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:09:20,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:09:20,447 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:09:20,976 INFO L227 lantSequenceWeakener]: Weakened 40 states. On average, predicates are now at 79.09% of their original sizes. [2018-11-07 18:09:20,976 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:09:24,252 INFO L415 sIntCurrentIteration]: We unified 205 AI predicates to 205 [2018-11-07 18:09:24,253 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:09:24,253 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:09:24,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2018-11-07 18:09:24,254 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:09:24,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 18:09:24,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 18:09:24,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2018-11-07 18:09:24,256 INFO L87 Difference]: Start difference. First operand 1765 states and 2468 transitions. Second operand 16 states. [2018-11-07 18:09:56,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:09:56,617 INFO L93 Difference]: Finished difference Result 4399 states and 6020 transitions. [2018-11-07 18:09:56,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 18:09:56,618 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 206 [2018-11-07 18:09:56,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:09:56,631 INFO L225 Difference]: With dead ends: 4399 [2018-11-07 18:09:56,631 INFO L226 Difference]: Without dead ends: 2948 [2018-11-07 18:09:56,636 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 215 GetRequests, 114 SyntacticMatches, 77 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2018-11-07 18:09:56,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2018-11-07 18:09:56,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 2694. [2018-11-07 18:09:56,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2694 states. [2018-11-07 18:09:56,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2694 states to 2694 states and 3439 transitions. [2018-11-07 18:09:56,704 INFO L78 Accepts]: Start accepts. Automaton has 2694 states and 3439 transitions. Word has length 206 [2018-11-07 18:09:56,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:09:56,705 INFO L480 AbstractCegarLoop]: Abstraction has 2694 states and 3439 transitions. [2018-11-07 18:09:56,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 18:09:56,705 INFO L276 IsEmpty]: Start isEmpty. Operand 2694 states and 3439 transitions. [2018-11-07 18:09:56,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-11-07 18:09:56,711 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:09:56,712 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:09:56,712 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:09:56,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:09:56,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1649536964, now seen corresponding path program 1 times [2018-11-07 18:09:56,713 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:09:56,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:09:56,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:09:56,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:09:56,714 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:09:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:09:57,021 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:09:57,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:09:57,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:09:57,022 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:09:57,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:09:57,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:09:57,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:09:57,023 INFO L87 Difference]: Start difference. First operand 2694 states and 3439 transitions. Second operand 4 states. [2018-11-07 18:10:00,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:10:00,572 INFO L93 Difference]: Finished difference Result 6642 states and 9599 transitions. [2018-11-07 18:10:00,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:10:00,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 316 [2018-11-07 18:10:00,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:10:00,600 INFO L225 Difference]: With dead ends: 6642 [2018-11-07 18:10:00,600 INFO L226 Difference]: Without dead ends: 5191 [2018-11-07 18:10:00,615 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:10:00,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5191 states. [2018-11-07 18:10:00,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5191 to 5188. [2018-11-07 18:10:00,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5188 states. [2018-11-07 18:10:00,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5188 states to 5188 states and 6785 transitions. [2018-11-07 18:10:00,750 INFO L78 Accepts]: Start accepts. Automaton has 5188 states and 6785 transitions. Word has length 316 [2018-11-07 18:10:00,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:10:00,751 INFO L480 AbstractCegarLoop]: Abstraction has 5188 states and 6785 transitions. [2018-11-07 18:10:00,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:10:00,751 INFO L276 IsEmpty]: Start isEmpty. Operand 5188 states and 6785 transitions. [2018-11-07 18:10:00,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2018-11-07 18:10:00,764 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:10:00,765 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:10:00,765 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:10:00,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:10:00,766 INFO L82 PathProgramCache]: Analyzing trace with hash -277060219, now seen corresponding path program 1 times [2018-11-07 18:10:00,766 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:10:00,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:10:00,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:10:00,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:10:00,767 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:10:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:10:01,464 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 14 proven. 58 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2018-11-07 18:10:01,465 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:10:01,465 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:10:01,465 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 456 with the following transitions: [2018-11-07 18:10:01,466 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 18:10:01,474 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:10:01,474 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:10:01,615 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:10:02,665 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:10:02,666 INFO L272 AbstractInterpreter]: Visited 284 different actions 851 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 18:10:02,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:10:02,673 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:10:03,217 INFO L227 lantSequenceWeakener]: Weakened 452 states. On average, predicates are now at 80.1% of their original sizes. [2018-11-07 18:10:03,217 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:10:03,390 INFO L415 sIntCurrentIteration]: We unified 454 AI predicates to 454 [2018-11-07 18:10:03,390 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:10:03,390 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:10:03,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2018-11-07 18:10:03,391 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:10:03,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 18:10:03,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 18:10:03,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-07 18:10:03,392 INFO L87 Difference]: Start difference. First operand 5188 states and 6785 transitions. Second operand 10 states. [2018-11-07 18:10:11,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:10:11,536 INFO L93 Difference]: Finished difference Result 10722 states and 14128 transitions. [2018-11-07 18:10:11,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 18:10:11,536 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 455 [2018-11-07 18:10:11,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:10:11,569 INFO L225 Difference]: With dead ends: 10722 [2018-11-07 18:10:11,569 INFO L226 Difference]: Without dead ends: 6777 [2018-11-07 18:10:11,589 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 461 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-11-07 18:10:11,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6777 states. [2018-11-07 18:10:11,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6777 to 6771. [2018-11-07 18:10:11,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6771 states. [2018-11-07 18:10:11,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6771 states to 6771 states and 8530 transitions. [2018-11-07 18:10:11,763 INFO L78 Accepts]: Start accepts. Automaton has 6771 states and 8530 transitions. Word has length 455 [2018-11-07 18:10:11,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:10:11,764 INFO L480 AbstractCegarLoop]: Abstraction has 6771 states and 8530 transitions. [2018-11-07 18:10:11,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 18:10:11,764 INFO L276 IsEmpty]: Start isEmpty. Operand 6771 states and 8530 transitions. [2018-11-07 18:10:11,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2018-11-07 18:10:11,786 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:10:11,787 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:10:11,787 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:10:11,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:10:11,788 INFO L82 PathProgramCache]: Analyzing trace with hash 364808284, now seen corresponding path program 1 times [2018-11-07 18:10:11,788 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:10:11,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:10:11,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:10:11,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:10:11,789 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:10:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:10:13,067 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 214 proven. 12 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-07 18:10:13,067 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:10:13,067 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:10:13,067 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 498 with the following transitions: [2018-11-07 18:10:13,068 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 18:10:13,084 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:10:13,084 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:10:13,349 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:10:16,541 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:10:16,541 INFO L272 AbstractInterpreter]: Visited 284 different actions 1123 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:10:16,551 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:10:16,551 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:10:17,027 INFO L227 lantSequenceWeakener]: Weakened 494 states. On average, predicates are now at 80.13% of their original sizes. [2018-11-07 18:10:17,028 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:10:17,175 INFO L415 sIntCurrentIteration]: We unified 496 AI predicates to 496 [2018-11-07 18:10:17,175 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:10:17,176 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:10:17,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2018-11-07 18:10:17,176 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:10:17,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 18:10:17,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 18:10:17,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 18:10:17,180 INFO L87 Difference]: Start difference. First operand 6771 states and 8530 transitions. Second operand 11 states. [2018-11-07 18:10:49,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:10:49,388 INFO L93 Difference]: Finished difference Result 15811 states and 20526 transitions. [2018-11-07 18:10:49,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-07 18:10:49,388 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 497 [2018-11-07 18:10:49,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:10:49,434 INFO L225 Difference]: With dead ends: 15811 [2018-11-07 18:10:49,435 INFO L226 Difference]: Without dead ends: 10603 [2018-11-07 18:10:49,464 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 508 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2018-11-07 18:10:49,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10603 states. [2018-11-07 18:10:49,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10603 to 10258. [2018-11-07 18:10:49,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10258 states. [2018-11-07 18:10:49,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10258 states to 10258 states and 12734 transitions. [2018-11-07 18:10:49,691 INFO L78 Accepts]: Start accepts. Automaton has 10258 states and 12734 transitions. Word has length 497 [2018-11-07 18:10:49,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:10:49,692 INFO L480 AbstractCegarLoop]: Abstraction has 10258 states and 12734 transitions. [2018-11-07 18:10:49,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 18:10:49,693 INFO L276 IsEmpty]: Start isEmpty. Operand 10258 states and 12734 transitions. [2018-11-07 18:10:49,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2018-11-07 18:10:49,710 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:10:49,711 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 18:10:49,711 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:10:49,711 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:10:49,711 INFO L82 PathProgramCache]: Analyzing trace with hash -932949663, now seen corresponding path program 1 times [2018-11-07 18:10:49,711 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:10:49,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:10:49,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:10:49,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:10:49,713 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:10:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:10:51,250 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2018-11-07 18:10:51,250 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:10:51,250 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:10:51,250 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 499 with the following transitions: [2018-11-07 18:10:51,251 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1167], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 18:10:51,264 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:10:51,264 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:10:51,543 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:10:51,971 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:10:51,971 INFO L272 AbstractInterpreter]: Visited 283 different actions 846 times. Merged at 7 different actions 19 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 18:10:51,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:10:51,980 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:10:52,477 INFO L227 lantSequenceWeakener]: Weakened 162 states. On average, predicates are now at 80.26% of their original sizes. [2018-11-07 18:10:52,477 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:10:52,769 INFO L415 sIntCurrentIteration]: We unified 497 AI predicates to 497 [2018-11-07 18:10:52,770 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:10:52,770 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:10:52,770 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [5] total 23 [2018-11-07 18:10:52,770 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:10:52,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 18:10:52,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 18:10:52,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2018-11-07 18:10:52,772 INFO L87 Difference]: Start difference. First operand 10258 states and 12734 transitions. Second operand 20 states. [2018-11-07 18:11:42,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:11:42,691 INFO L93 Difference]: Finished difference Result 22082 states and 27727 transitions. [2018-11-07 18:11:42,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-07 18:11:42,691 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 498 [2018-11-07 18:11:42,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:11:42,755 INFO L225 Difference]: With dead ends: 22082 [2018-11-07 18:11:42,755 INFO L226 Difference]: Without dead ends: 13389 [2018-11-07 18:11:42,790 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 508 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2018-11-07 18:11:42,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13389 states. [2018-11-07 18:11:43,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13389 to 12901. [2018-11-07 18:11:43,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12901 states. [2018-11-07 18:11:43,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12901 states to 12901 states and 15614 transitions. [2018-11-07 18:11:43,064 INFO L78 Accepts]: Start accepts. Automaton has 12901 states and 15614 transitions. Word has length 498 [2018-11-07 18:11:43,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:11:43,065 INFO L480 AbstractCegarLoop]: Abstraction has 12901 states and 15614 transitions. [2018-11-07 18:11:43,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 18:11:43,066 INFO L276 IsEmpty]: Start isEmpty. Operand 12901 states and 15614 transitions. [2018-11-07 18:11:43,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2018-11-07 18:11:43,092 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:11:43,093 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:11:43,093 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:11:43,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:11:43,094 INFO L82 PathProgramCache]: Analyzing trace with hash -590850810, now seen corresponding path program 1 times [2018-11-07 18:11:43,094 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:11:43,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:11:43,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:11:43,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:11:43,096 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:11:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:11:44,139 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 14 proven. 58 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2018-11-07 18:11:44,140 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:11:44,140 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:11:44,140 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 534 with the following transitions: [2018-11-07 18:11:44,141 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [962], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 18:11:44,145 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:11:44,145 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:11:44,981 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:11:45,516 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:11:45,516 INFO L272 AbstractInterpreter]: Visited 284 different actions 851 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 18:11:45,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:11:45,520 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:11:45,952 INFO L227 lantSequenceWeakener]: Weakened 530 states. On average, predicates are now at 83.37% of their original sizes. [2018-11-07 18:11:45,953 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:11:46,041 INFO L415 sIntCurrentIteration]: We unified 532 AI predicates to 532 [2018-11-07 18:11:46,041 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:11:46,041 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:11:46,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2018-11-07 18:11:46,041 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:11:46,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 18:11:46,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 18:11:46,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-07 18:11:46,043 INFO L87 Difference]: Start difference. First operand 12901 states and 15614 transitions. Second operand 10 states. Received shutdown request... [2018-11-07 18:12:00,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 18:12:00,313 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:12:00,319 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:12:00,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:12:00 BoogieIcfgContainer [2018-11-07 18:12:00,320 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:12:00,321 INFO L168 Benchmark]: Toolchain (without parser) took 216149.42 ms. Allocated memory was 1.5 GB in the beginning and 5.7 GB in the end (delta: 4.2 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-11-07 18:12:00,322 INFO L168 Benchmark]: CDTParser took 0.25 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. [2018-11-07 18:12:00,322 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1355.23 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-11-07 18:12:00,323 INFO L168 Benchmark]: Boogie Procedure Inliner took 248.36 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 754.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -889.1 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. [2018-11-07 18:12:00,324 INFO L168 Benchmark]: Boogie Preprocessor took 136.24 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-11-07 18:12:00,325 INFO L168 Benchmark]: RCFGBuilder took 6244.63 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 304.8 MB). Peak memory consumption was 304.8 MB. Max. memory is 7.1 GB. [2018-11-07 18:12:00,326 INFO L168 Benchmark]: TraceAbstraction took 208159.45 ms. Allocated memory was 2.3 GB in the beginning and 5.7 GB in the end (delta: 3.4 GB). Free memory was 1.9 GB in the beginning and 2.5 GB in the end (delta: -617.4 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-11-07 18:12:00,331 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 1355.23 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 248.36 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 754.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -889.1 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.24 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6244.63 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 304.8 MB). Peak memory consumption was 304.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208159.45 ms. Allocated memory was 2.3 GB in the beginning and 5.7 GB in the end (delta: 3.4 GB). Free memory was 1.9 GB in the beginning and 2.5 GB in the end (delta: -617.4 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: 73]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 73). Cancelled while BasicCegarLoop was constructing difference of abstraction (12901states) and FLOYD_HOARE automaton (currently 14 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (8714 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 208.0s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 183.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3051 SDtfs, 17150 SDslu, 3892 SDs, 0 SdLazy, 24394 SolverSat, 2716 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 79.1s Time, PredicateUnifierStatistics: 12 DeclaredPredicates, 2361 GetRequests, 2164 SyntacticMatches, 77 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1059 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12901occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.2s AbstIntTime, 6 AbstIntIterations, 6 AbstIntStrong, 0.9977478866702585 AbsIntWeakeningRatio, 0.07326646314871348 AbsIntAvgWeakeningVarsNumRemoved, 18.374182293938073 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 1477 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 2746 NumberOfCodeBlocks, 2746 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 2737 ConstructedInterpolants, 0 QuantifiedInterpolants, 4239583 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 1248/1432 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown