java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-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/Problem12_label19_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 11:14:41,405 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 11:14:41,408 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 11:14:41,420 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 11:14:41,420 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 11:14:41,421 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 11:14:41,422 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 11:14:41,424 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 11:14:41,426 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 11:14:41,427 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 11:14:41,428 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 11:14:41,428 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 11:14:41,429 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 11:14:41,430 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 11:14:41,431 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 11:14:41,432 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 11:14:41,433 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 11:14:41,434 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 11:14:41,436 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 11:14:41,438 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 11:14:41,439 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 11:14:41,441 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 11:14:41,447 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 11:14:41,447 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 11:14:41,447 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 11:14:41,448 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 11:14:41,451 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 11:14:41,452 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 11:14:41,455 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 11:14:41,456 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 11:14:41,456 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 11:14:41,457 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 11:14:41,457 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 11:14:41,457 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 11:14:41,458 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 11:14:41,459 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 11:14:41,459 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 11:14:41,474 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 11:14:41,474 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 11:14:41,475 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 11:14:41,475 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 11:14:41,476 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 11:14:41,476 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 11:14:41,476 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 11:14:41,476 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 11:14:41,476 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 11:14:41,477 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 11:14:41,477 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 11:14:41,477 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 11:14:41,478 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 11:14:41,478 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 11:14:41,478 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 11:14:41,478 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 11:14:41,478 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 11:14:41,478 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 11:14:41,479 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 11:14:41,479 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 11:14:41,479 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 11:14:41,479 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 11:14:41,479 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 11:14:41,480 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 11:14:41,480 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 11:14:41,480 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 11:14:41,480 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 11:14:41,480 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 11:14:41,481 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 11:14:41,481 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 11:14:41,481 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 11:14:41,481 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 11:14:41,481 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 11:14:41,481 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 11:14:41,541 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 11:14:41,555 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 11:14:41,560 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 11:14:41,561 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 11:14:41,562 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 11:14:41,563 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label19_false-unreach-call.c [2018-10-27 11:14:41,623 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5d37a2097/3b9441863aa6470fa77dfd695fa42dc1/FLAG8722dbd81 [2018-10-27 11:14:42,352 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 11:14:42,353 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label19_false-unreach-call.c [2018-10-27 11:14:42,389 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5d37a2097/3b9441863aa6470fa77dfd695fa42dc1/FLAG8722dbd81 [2018-10-27 11:14:42,411 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5d37a2097/3b9441863aa6470fa77dfd695fa42dc1 [2018-10-27 11:14:42,425 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 11:14:42,427 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 11:14:42,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 11:14:42,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 11:14:42,432 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 11:14:42,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:14:42" (1/1) ... [2018-10-27 11:14:42,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5412784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:42, skipping insertion in model container [2018-10-27 11:14:42,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:14:42" (1/1) ... [2018-10-27 11:14:42,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 11:14:42,623 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 11:14:43,789 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:14:43,795 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 11:14:44,394 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:14:44,428 INFO L193 MainTranslator]: Completed translation [2018-10-27 11:14:44,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:44 WrapperNode [2018-10-27 11:14:44,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 11:14:44,430 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 11:14:44,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 11:14:44,431 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 11:14:44,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:44" (1/1) ... [2018-10-27 11:14:44,508 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:44" (1/1) ... [2018-10-27 11:14:44,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 11:14:44,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 11:14:44,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 11:14:44,901 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 11:14:44,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:44" (1/1) ... [2018-10-27 11:14:44,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:44" (1/1) ... [2018-10-27 11:14:44,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:44" (1/1) ... [2018-10-27 11:14:44,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:44" (1/1) ... [2018-10-27 11:14:45,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:44" (1/1) ... [2018-10-27 11:14:45,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:44" (1/1) ... [2018-10-27 11:14:45,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:44" (1/1) ... [2018-10-27 11:14:45,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 11:14:45,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 11:14:45,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 11:14:45,154 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 11:14:45,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 11:14:45,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 11:14:45,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 11:14:45,226 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 11:14:45,227 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 11:14:45,227 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 11:14:45,227 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 11:14:45,227 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 11:14:45,228 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 11:14:45,229 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 11:14:45,229 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 11:14:45,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 11:14:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 11:14:45,231 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 11:14:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 11:14:56,378 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 11:14:56,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:14:56 BoogieIcfgContainer [2018-10-27 11:14:56,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 11:14:56,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 11:14:56,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 11:14:56,384 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 11:14:56,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:14:42" (1/3) ... [2018-10-27 11:14:56,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc978f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:14:56, skipping insertion in model container [2018-10-27 11:14:56,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:14:44" (2/3) ... [2018-10-27 11:14:56,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc978f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:14:56, skipping insertion in model container [2018-10-27 11:14:56,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:14:56" (3/3) ... [2018-10-27 11:14:56,388 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label19_false-unreach-call.c [2018-10-27 11:14:56,399 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 11:14:56,409 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 11:14:56,428 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 11:14:56,476 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 11:14:56,476 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 11:14:56,476 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 11:14:56,477 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 11:14:56,477 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 11:14:56,477 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 11:14:56,477 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 11:14:56,477 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 11:14:56,532 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-27 11:14:56,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-27 11:14:56,540 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:14:56,541 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] [2018-10-27 11:14:56,545 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:14:56,552 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:14:56,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1723693075, now seen corresponding path program 1 times [2018-10-27 11:14:56,555 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:14:56,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:14:56,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:14:56,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:14:56,621 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:14:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:14:57,016 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 11:14:57,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:14:57,093 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:14:57,093 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 11:14:57,093 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:14:57,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 11:14:57,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 11:14:57,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 11:14:57,116 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-27 11:15:06,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:15:06,334 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-27 11:15:06,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 11:15:06,336 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-10-27 11:15:06,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:15:06,383 INFO L225 Difference]: With dead ends: 2446 [2018-10-27 11:15:06,383 INFO L226 Difference]: Without dead ends: 1604 [2018-10-27 11:15:06,402 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 11:15:06,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-27 11:15:06,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-27 11:15:06,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-27 11:15:06,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3021 transitions. [2018-10-27 11:15:06,602 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3021 transitions. Word has length 21 [2018-10-27 11:15:06,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:15:06,602 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 3021 transitions. [2018-10-27 11:15:06,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 11:15:06,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3021 transitions. [2018-10-27 11:15:06,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-27 11:15:06,611 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:15:06,611 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:15:06,612 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:15:06,612 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:15:06,613 INFO L82 PathProgramCache]: Analyzing trace with hash 942951892, now seen corresponding path program 1 times [2018-10-27 11:15:06,613 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:15:06,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:15:06,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:15:06,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:15:06,616 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:15:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:15:07,098 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:15:07,099 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:15:07,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 11:15:07,099 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:15:07,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 11:15:07,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 11:15:07,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 11:15:07,104 INFO L87 Difference]: Start difference. First operand 1604 states and 3021 transitions. Second operand 5 states. [2018-10-27 11:15:18,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:15:18,364 INFO L93 Difference]: Finished difference Result 4873 states and 9189 transitions. [2018-10-27 11:15:18,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:15:18,373 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2018-10-27 11:15:18,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:15:18,398 INFO L225 Difference]: With dead ends: 4873 [2018-10-27 11:15:18,398 INFO L226 Difference]: Without dead ends: 3275 [2018-10-27 11:15:18,404 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 11:15:18,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2018-10-27 11:15:18,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 3241. [2018-10-27 11:15:18,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3241 states. [2018-10-27 11:15:18,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3241 states to 3241 states and 5451 transitions. [2018-10-27 11:15:18,536 INFO L78 Accepts]: Start accepts. Automaton has 3241 states and 5451 transitions. Word has length 99 [2018-10-27 11:15:18,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:15:18,537 INFO L481 AbstractCegarLoop]: Abstraction has 3241 states and 5451 transitions. [2018-10-27 11:15:18,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 11:15:18,538 INFO L276 IsEmpty]: Start isEmpty. Operand 3241 states and 5451 transitions. [2018-10-27 11:15:18,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-27 11:15:18,543 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:15:18,543 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:15:18,544 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:15:18,544 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:15:18,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1945763549, now seen corresponding path program 1 times [2018-10-27 11:15:18,544 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:15:18,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:15:18,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:15:18,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:15:18,546 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:15:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:15:18,825 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:15:18,825 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:15:18,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:15:18,826 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:15:18,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:15:18,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:15:18,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:15:18,827 INFO L87 Difference]: Start difference. First operand 3241 states and 5451 transitions. Second operand 6 states. [2018-10-27 11:15:30,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:15:30,875 INFO L93 Difference]: Finished difference Result 9767 states and 16545 transitions. [2018-10-27 11:15:30,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:15:30,878 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-10-27 11:15:30,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:15:30,919 INFO L225 Difference]: With dead ends: 9767 [2018-10-27 11:15:30,919 INFO L226 Difference]: Without dead ends: 6532 [2018-10-27 11:15:30,933 INFO L605 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 [2018-10-27 11:15:30,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6532 states. [2018-10-27 11:15:31,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6532 to 6456. [2018-10-27 11:15:31,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6456 states. [2018-10-27 11:15:31,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6456 states to 6456 states and 10247 transitions. [2018-10-27 11:15:31,121 INFO L78 Accepts]: Start accepts. Automaton has 6456 states and 10247 transitions. Word has length 112 [2018-10-27 11:15:31,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:15:31,122 INFO L481 AbstractCegarLoop]: Abstraction has 6456 states and 10247 transitions. [2018-10-27 11:15:31,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:15:31,122 INFO L276 IsEmpty]: Start isEmpty. Operand 6456 states and 10247 transitions. [2018-10-27 11:15:31,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-27 11:15:31,126 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:15:31,126 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:15:31,126 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:15:31,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:15:31,127 INFO L82 PathProgramCache]: Analyzing trace with hash 473756696, now seen corresponding path program 1 times [2018-10-27 11:15:31,127 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:15:31,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:15:31,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:15:31,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:15:31,129 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:15:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:15:31,472 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 11:15:31,756 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:15:31,757 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:15:31,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:15:31,757 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:15:31,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:15:31,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:15:31,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:15:31,758 INFO L87 Difference]: Start difference. First operand 6456 states and 10247 transitions. Second operand 6 states. [2018-10-27 11:15:39,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:15:39,661 INFO L93 Difference]: Finished difference Result 18070 states and 29703 transitions. [2018-10-27 11:15:39,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:15:39,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-10-27 11:15:39,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:15:39,732 INFO L225 Difference]: With dead ends: 18070 [2018-10-27 11:15:39,732 INFO L226 Difference]: Without dead ends: 11620 [2018-10-27 11:15:39,758 INFO L605 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 [2018-10-27 11:15:39,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11620 states. [2018-10-27 11:15:40,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11620 to 11438. [2018-10-27 11:15:40,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11438 states. [2018-10-27 11:15:40,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11438 states to 11438 states and 17980 transitions. [2018-10-27 11:15:40,283 INFO L78 Accepts]: Start accepts. Automaton has 11438 states and 17980 transitions. Word has length 117 [2018-10-27 11:15:40,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:15:40,284 INFO L481 AbstractCegarLoop]: Abstraction has 11438 states and 17980 transitions. [2018-10-27 11:15:40,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:15:40,284 INFO L276 IsEmpty]: Start isEmpty. Operand 11438 states and 17980 transitions. [2018-10-27 11:15:40,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-27 11:15:40,288 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:15:40,288 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:15:40,289 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:15:40,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:15:40,289 INFO L82 PathProgramCache]: Analyzing trace with hash 286963880, now seen corresponding path program 1 times [2018-10-27 11:15:40,289 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:15:40,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:15:40,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:15:40,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:15:40,291 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:15:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:15:40,803 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:15:40,804 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:15:40,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:15:40,804 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:15:40,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:15:40,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:15:40,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:15:40,806 INFO L87 Difference]: Start difference. First operand 11438 states and 17980 transitions. Second operand 6 states. [2018-10-27 11:16:09,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:16:09,586 INFO L93 Difference]: Finished difference Result 46378 states and 82621 transitions. [2018-10-27 11:16:09,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 11:16:09,587 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-27 11:16:09,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:16:09,781 INFO L225 Difference]: With dead ends: 46378 [2018-10-27 11:16:09,782 INFO L226 Difference]: Without dead ends: 34946 [2018-10-27 11:16:09,886 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 11:16:09,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34946 states. [2018-10-27 11:16:10,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34946 to 34661. [2018-10-27 11:16:10,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34661 states. [2018-10-27 11:16:10,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34661 states to 34661 states and 54052 transitions. [2018-10-27 11:16:10,914 INFO L78 Accepts]: Start accepts. Automaton has 34661 states and 54052 transitions. Word has length 125 [2018-10-27 11:16:10,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:16:10,914 INFO L481 AbstractCegarLoop]: Abstraction has 34661 states and 54052 transitions. [2018-10-27 11:16:10,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:16:10,915 INFO L276 IsEmpty]: Start isEmpty. Operand 34661 states and 54052 transitions. [2018-10-27 11:16:10,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-27 11:16:10,918 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:16:10,918 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:16:10,919 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:16:10,919 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:16:10,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1547306367, now seen corresponding path program 1 times [2018-10-27 11:16:10,919 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:16:10,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:16:10,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:16:10,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:16:10,920 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:16:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:16:11,225 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 11:16:11,594 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:16:11,594 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:16:11,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:16:11,595 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:16:11,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:16:11,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:16:11,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:16:11,597 INFO L87 Difference]: Start difference. First operand 34661 states and 54052 transitions. Second operand 6 states. [2018-10-27 11:16:20,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:16:20,588 INFO L93 Difference]: Finished difference Result 84450 states and 141512 transitions. [2018-10-27 11:16:20,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:16:20,591 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-10-27 11:16:20,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:16:20,806 INFO L225 Difference]: With dead ends: 84450 [2018-10-27 11:16:20,806 INFO L226 Difference]: Without dead ends: 49795 [2018-10-27 11:16:20,893 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 11:16:20,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49795 states. [2018-10-27 11:16:22,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49795 to 49434. [2018-10-27 11:16:22,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49434 states. [2018-10-27 11:16:22,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49434 states to 49434 states and 75498 transitions. [2018-10-27 11:16:22,231 INFO L78 Accepts]: Start accepts. Automaton has 49434 states and 75498 transitions. Word has length 146 [2018-10-27 11:16:22,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:16:22,232 INFO L481 AbstractCegarLoop]: Abstraction has 49434 states and 75498 transitions. [2018-10-27 11:16:22,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:16:22,233 INFO L276 IsEmpty]: Start isEmpty. Operand 49434 states and 75498 transitions. [2018-10-27 11:16:22,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-27 11:16:22,242 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:16:22,243 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:16:22,243 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:16:22,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:16:22,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1989522588, now seen corresponding path program 1 times [2018-10-27 11:16:22,244 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:16:22,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:16:22,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:16:22,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:16:22,248 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:16:22,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:16:22,477 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-27 11:16:22,478 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 11:16:22,478 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 11:16:22,479 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 168 with the following transitions: [2018-10-27 11:16:22,482 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1935], [1937], [1940], [1948], [1956], [1964], [1972], [1980], [1988], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2664], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-27 11:16:22,538 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 11:16:22,538 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 11:16:23,241 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 11:16:25,298 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 11:16:25,300 INFO L272 AbstractInterpreter]: Visited 153 different actions 300 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 11:16:25,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:16:25,346 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 11:16:26,252 INFO L227 lantSequenceWeakener]: Weakened 87 states. On average, predicates are now at 75.59% of their original sizes. [2018-10-27 11:16:26,253 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 11:16:27,346 INFO L415 sIntCurrentIteration]: We unified 166 AI predicates to 166 [2018-10-27 11:16:27,347 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 11:16:27,348 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 11:16:27,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [4] total 19 [2018-10-27 11:16:27,349 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:16:27,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-27 11:16:27,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-27 11:16:27,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-10-27 11:16:27,351 INFO L87 Difference]: Start difference. First operand 49434 states and 75498 transitions. Second operand 17 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown