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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:41:50,207 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:41:50,209 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:41:50,221 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:41:50,221 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:41:50,222 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:41:50,224 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:41:50,225 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:41:50,227 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:41:50,228 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:41:50,229 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:41:50,229 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:41:50,230 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:41:50,231 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:41:50,232 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:41:50,233 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:41:50,234 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:41:50,236 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:41:50,238 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:41:50,239 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:41:50,241 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:41:50,242 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:41:50,245 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:41:50,245 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:41:50,245 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:41:50,246 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:41:50,247 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:41:50,248 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:41:50,249 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:41:50,253 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:41:50,253 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:41:50,254 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:41:50,254 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:41:50,254 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:41:50,259 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:41:50,259 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:41:50,260 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.epf [2018-11-07 15:41:50,286 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:41:50,287 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:41:50,288 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:41:50,288 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:41:50,288 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:41:50,288 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:41:50,288 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:41:50,289 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:41:50,289 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:41:50,289 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:41:50,289 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:41:50,289 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:41:50,290 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:41:50,290 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:41:50,290 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:41:50,291 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:41:50,291 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:41:50,291 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:41:50,291 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:41:50,291 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:41:50,292 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:41:50,292 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:41:50,292 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:41:50,292 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:41:50,292 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:41:50,293 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:41:50,293 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:41:50,293 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:41:50,293 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:41:50,294 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:41:50,294 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:41:50,294 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:41:50,294 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:41:50,294 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:41:50,349 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:41:50,368 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:41:50,374 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:41:50,375 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:41:50,376 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:41:50,377 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label22_true-unreach-call.c [2018-11-07 15:41:50,450 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b86e20521/763e7014bc5048b9b007f195584af1ce/FLAG94ca26a95 [2018-11-07 15:41:51,200 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:41:51,201 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label22_true-unreach-call.c [2018-11-07 15:41:51,228 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b86e20521/763e7014bc5048b9b007f195584af1ce/FLAG94ca26a95 [2018-11-07 15:41:51,246 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b86e20521/763e7014bc5048b9b007f195584af1ce [2018-11-07 15:41:51,260 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:41:51,262 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:41:51,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:41:51,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:41:51,269 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:41:51,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:41:51" (1/1) ... [2018-11-07 15:41:51,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7293a3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:51, skipping insertion in model container [2018-11-07 15:41:51,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:41:51" (1/1) ... [2018-11-07 15:41:51,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:41:51,427 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:41:52,403 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:41:52,409 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:41:52,913 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:41:52,943 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:41:52,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:52 WrapperNode [2018-11-07 15:41:52,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:41:52,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:41:52,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:41:52,946 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:41:52,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:52" (1/1) ... [2018-11-07 15:41:53,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:52" (1/1) ... [2018-11-07 15:41:53,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:41:53,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:41:53,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:41:53,219 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:41:53,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:52" (1/1) ... [2018-11-07 15:41:53,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:52" (1/1) ... [2018-11-07 15:41:53,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:52" (1/1) ... [2018-11-07 15:41:53,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:52" (1/1) ... [2018-11-07 15:41:53,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:52" (1/1) ... [2018-11-07 15:41:53,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:52" (1/1) ... [2018-11-07 15:41:53,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:52" (1/1) ... [2018-11-07 15:41:53,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:41:53,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:41:53,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:41:53,462 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:41:53,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:52" (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 15:41:53,537 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:41:53,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:41:53,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:41:53,538 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 15:41:53,538 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 15:41:53,539 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:41:53,539 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:41:53,539 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:41:53,539 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:41:53,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:41:53,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:41:53,540 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:41:53,540 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:42:01,394 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:42:01,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:42:01 BoogieIcfgContainer [2018-11-07 15:42:01,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:42:01,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:42:01,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:42:01,400 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:42:01,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:41:51" (1/3) ... [2018-11-07 15:42:01,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c82b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:42:01, skipping insertion in model container [2018-11-07 15:42:01,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:52" (2/3) ... [2018-11-07 15:42:01,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c82b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:42:01, skipping insertion in model container [2018-11-07 15:42:01,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:42:01" (3/3) ... [2018-11-07 15:42:01,403 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label22_true-unreach-call.c [2018-11-07 15:42:01,414 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:42:01,424 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:42:01,442 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:42:01,487 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:42:01,487 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:42:01,487 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:42:01,488 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:42:01,488 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:42:01,488 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:42:01,488 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:42:01,488 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:42:01,527 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 15:42:01,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-07 15:42:01,536 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:42:01,537 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, 1, 1, 1, 1] [2018-11-07 15:42:01,540 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:42:01,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:42:01,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1454779668, now seen corresponding path program 1 times [2018-11-07 15:42:01,548 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:42:01,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:42:01,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:42:01,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:42:01,598 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:42:01,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:42:01,996 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:42:02,129 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 15:42:02,132 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:42:02,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 15:42:02,133 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:42:02,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:42:02,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:42:02,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:42:02,161 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 15:42:08,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:42:08,903 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 15:42:08,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:42:08,906 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-11-07 15:42:08,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:42:08,953 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 15:42:08,953 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 15:42:08,971 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:42:09,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 15:42:09,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 15:42:09,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 15:42:09,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-11-07 15:42:09,164 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 48 [2018-11-07 15:42:09,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:42:09,165 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-11-07 15:42:09,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:42:09,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-11-07 15:42:09,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-11-07 15:42:09,177 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:42:09,178 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, 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] [2018-11-07 15:42:09,178 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:42:09,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:42:09,180 INFO L82 PathProgramCache]: Analyzing trace with hash 231159574, now seen corresponding path program 1 times [2018-11-07 15:42:09,180 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:42:09,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:42:09,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:42:09,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:42:09,182 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:42:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:42:09,523 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:42:09,753 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:42:09,753 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:42:09,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 15:42:09,754 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:42:09,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 15:42:09,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 15:42:09,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 15:42:09,758 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 5 states. [2018-11-07 15:42:19,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:42:19,450 INFO L93 Difference]: Finished difference Result 3698 states and 6787 transitions. [2018-11-07 15:42:19,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:42:19,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2018-11-07 15:42:19,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:42:19,465 INFO L225 Difference]: With dead ends: 3698 [2018-11-07 15:42:19,465 INFO L226 Difference]: Without dead ends: 2230 [2018-11-07 15:42:19,471 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:42:19,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2018-11-07 15:42:19,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2209. [2018-11-07 15:42:19,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2209 states. [2018-11-07 15:42:19,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3833 transitions. [2018-11-07 15:42:19,541 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3833 transitions. Word has length 120 [2018-11-07 15:42:19,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:42:19,541 INFO L480 AbstractCegarLoop]: Abstraction has 2209 states and 3833 transitions. [2018-11-07 15:42:19,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 15:42:19,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3833 transitions. [2018-11-07 15:42:19,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-07 15:42:19,546 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:42:19,555 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, 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] [2018-11-07 15:42:19,555 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:42:19,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:42:19,556 INFO L82 PathProgramCache]: Analyzing trace with hash -555472729, now seen corresponding path program 1 times [2018-11-07 15:42:19,556 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:42:19,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:42:19,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:42:19,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:42:19,557 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:42:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:42:19,858 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:42:19,859 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:42:19,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:42:19,859 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:42:19,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:42:19,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:42:19,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:42:19,862 INFO L87 Difference]: Start difference. First operand 2209 states and 3833 transitions. Second operand 6 states. [2018-11-07 15:42:27,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:42:27,629 INFO L93 Difference]: Finished difference Result 5866 states and 10122 transitions. [2018-11-07 15:42:27,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:42:27,636 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-11-07 15:42:27,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:42:27,664 INFO L225 Difference]: With dead ends: 5866 [2018-11-07 15:42:27,665 INFO L226 Difference]: Without dead ends: 3663 [2018-11-07 15:42:27,674 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 [2018-11-07 15:42:27,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2018-11-07 15:42:27,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 3639. [2018-11-07 15:42:27,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2018-11-07 15:42:27,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5517 transitions. [2018-11-07 15:42:27,786 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5517 transitions. Word has length 143 [2018-11-07 15:42:27,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:42:27,787 INFO L480 AbstractCegarLoop]: Abstraction has 3639 states and 5517 transitions. [2018-11-07 15:42:27,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:42:27,787 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5517 transitions. [2018-11-07 15:42:27,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-11-07 15:42:27,790 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:42:27,791 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, 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] [2018-11-07 15:42:27,791 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:42:27,792 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:42:27,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1738669407, now seen corresponding path program 1 times [2018-11-07 15:42:27,792 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:42:27,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:42:27,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:42:27,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:42:27,796 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:42:27,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:42:28,085 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:42:28,234 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:42:28,234 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:42:28,234 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:42:28,235 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:42:28,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:42:28,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:42:28,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:42:28,236 INFO L87 Difference]: Start difference. First operand 3639 states and 5517 transitions. Second operand 6 states. [2018-11-07 15:42:35,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:42:35,382 INFO L93 Difference]: Finished difference Result 8735 states and 13271 transitions. [2018-11-07 15:42:35,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:42:35,384 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2018-11-07 15:42:35,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:42:35,406 INFO L225 Difference]: With dead ends: 8735 [2018-11-07 15:42:35,407 INFO L226 Difference]: Without dead ends: 5102 [2018-11-07 15:42:35,419 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 [2018-11-07 15:42:35,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2018-11-07 15:42:35,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 5084. [2018-11-07 15:42:35,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5084 states. [2018-11-07 15:42:35,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5084 states to 5084 states and 6940 transitions. [2018-11-07 15:42:35,530 INFO L78 Accepts]: Start accepts. Automaton has 5084 states and 6940 transitions. Word has length 147 [2018-11-07 15:42:35,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:42:35,531 INFO L480 AbstractCegarLoop]: Abstraction has 5084 states and 6940 transitions. [2018-11-07 15:42:35,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:42:35,531 INFO L276 IsEmpty]: Start isEmpty. Operand 5084 states and 6940 transitions. [2018-11-07 15:42:35,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-11-07 15:42:35,534 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:42:35,534 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, 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] [2018-11-07 15:42:35,535 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:42:35,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:42:35,535 INFO L82 PathProgramCache]: Analyzing trace with hash -907400126, now seen corresponding path program 1 times [2018-11-07 15:42:35,535 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:42:35,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:42:35,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:42:35,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:42:35,537 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:42:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:42:35,788 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:42:36,028 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:42:36,028 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:42:36,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:42:36,029 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:42:36,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:42:36,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:42:36,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:42:36,030 INFO L87 Difference]: Start difference. First operand 5084 states and 6940 transitions. Second operand 6 states. [2018-11-07 15:42:41,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:42:41,549 INFO L93 Difference]: Finished difference Result 13307 states and 18750 transitions. [2018-11-07 15:42:41,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:42:41,552 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2018-11-07 15:42:41,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:42:41,583 INFO L225 Difference]: With dead ends: 13307 [2018-11-07 15:42:41,583 INFO L226 Difference]: Without dead ends: 8229 [2018-11-07 15:42:41,597 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:42:41,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8229 states. [2018-11-07 15:42:41,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8229 to 8128. [2018-11-07 15:42:41,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8128 states. [2018-11-07 15:42:41,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8128 states to 8128 states and 10817 transitions. [2018-11-07 15:42:41,801 INFO L78 Accepts]: Start accepts. Automaton has 8128 states and 10817 transitions. Word has length 178 [2018-11-07 15:42:41,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:42:41,801 INFO L480 AbstractCegarLoop]: Abstraction has 8128 states and 10817 transitions. [2018-11-07 15:42:41,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:42:41,802 INFO L276 IsEmpty]: Start isEmpty. Operand 8128 states and 10817 transitions. [2018-11-07 15:42:41,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-11-07 15:42:41,808 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:42:41,809 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, 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] [2018-11-07 15:42:41,809 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:42:41,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:42:41,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1716237031, now seen corresponding path program 1 times [2018-11-07 15:42:41,809 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:42:41,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:42:41,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:42:41,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:42:41,811 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:42:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:42:42,236 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 82 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 15:42:42,237 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:42:42,237 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:42:42,238 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 212 with the following transitions: [2018-11-07 15:42:42,240 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1907], [1909], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 15:42:42,288 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:42:42,290 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:42:42,771 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:42:42,772 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 15:42:42,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:42:42,830 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:42:43,336 INFO L227 lantSequenceWeakener]: Weakened 202 states. On average, predicates are now at 77.93% of their original sizes. [2018-11-07 15:42:43,336 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:42:43,705 INFO L415 sIntCurrentIteration]: We unified 210 AI predicates to 210 [2018-11-07 15:42:43,706 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:42:43,710 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:42:43,710 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 15:42:43,710 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:42:43,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 15:42:43,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 15:42:43,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 15:42:43,712 INFO L87 Difference]: Start difference. First operand 8128 states and 10817 transitions. Second operand 7 states. [2018-11-07 15:42:51,876 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown