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/Problem15_label43_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:11:41,379 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:11:41,383 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:11:41,402 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:11:41,402 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:11:41,404 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:11:41,405 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:11:41,407 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:11:41,409 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:11:41,410 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:11:41,410 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:11:41,411 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:11:41,412 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:11:41,413 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:11:41,414 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:11:41,414 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:11:41,415 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:11:41,417 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:11:41,419 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:11:41,421 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:11:41,422 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:11:41,423 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:11:41,426 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:11:41,426 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:11:41,426 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:11:41,427 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:11:41,428 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:11:41,429 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:11:41,430 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:11:41,433 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:11:41,433 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:11:41,434 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:11:41,434 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:11:41,434 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:11:41,435 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:11:41,439 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:11:41,439 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 15:11:41,471 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:11:41,471 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:11:41,472 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:11:41,472 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:11:41,472 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:11:41,473 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:11:41,473 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:11:41,473 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:11:41,473 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:11:41,474 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:11:41,474 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:11:41,474 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:11:41,475 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:11:41,475 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:11:41,476 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:11:41,476 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:11:41,476 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:11:41,476 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:11:41,476 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:11:41,477 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:11:41,478 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:11:41,478 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:11:41,478 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:11:41,478 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:11:41,479 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:11:41,479 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:11:41,479 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:11:41,479 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:11:41,479 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:11:41,481 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:11:41,481 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:11:41,481 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:11:41,481 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:11:41,481 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:11:41,537 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:11:41,554 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:11:41,560 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:11:41,562 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:11:41,562 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:11:41,563 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label43_true-unreach-call.c [2018-11-07 15:11:41,632 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed09119c0/7b69dc61448841e1a94f47d172de5d35/FLAG253eea042 [2018-11-07 15:11:42,364 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:11:42,365 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label43_true-unreach-call.c [2018-11-07 15:11:42,383 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed09119c0/7b69dc61448841e1a94f47d172de5d35/FLAG253eea042 [2018-11-07 15:11:42,399 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed09119c0/7b69dc61448841e1a94f47d172de5d35 [2018-11-07 15:11:42,411 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:11:42,413 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:11:42,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:11:42,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:11:42,419 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:11:42,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:11:42" (1/1) ... [2018-11-07 15:11:42,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f12b8cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:42, skipping insertion in model container [2018-11-07 15:11:42,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:11:42" (1/1) ... [2018-11-07 15:11:42,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:11:42,537 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:11:43,502 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:11:43,507 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:11:43,834 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:11:43,854 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:11:43,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:43 WrapperNode [2018-11-07 15:11:43,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:11:43,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:11:43,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:11:43,857 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:11:43,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:43" (1/1) ... [2018-11-07 15:11:44,095 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:43" (1/1) ... [2018-11-07 15:11:44,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:11:44,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:11:44,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:11:44,109 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:11:44,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:43" (1/1) ... [2018-11-07 15:11:44,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:43" (1/1) ... [2018-11-07 15:11:44,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:43" (1/1) ... [2018-11-07 15:11:44,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:43" (1/1) ... [2018-11-07 15:11:44,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:43" (1/1) ... [2018-11-07 15:11:44,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:43" (1/1) ... [2018-11-07 15:11:44,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:43" (1/1) ... [2018-11-07 15:11:44,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:11:44,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:11:44,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:11:44,276 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:11:44,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:43" (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 15:11:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:11:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:11:44,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:11:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:11:44,351 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:11:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:11:44,352 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:11:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:11:44,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:11:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:11:44,352 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:11:51,159 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:11:51,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:11:51 BoogieIcfgContainer [2018-11-07 15:11:51,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:11:51,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:11:51,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:11:51,166 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:11:51,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:11:42" (1/3) ... [2018-11-07 15:11:51,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65cdeb52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:11:51, skipping insertion in model container [2018-11-07 15:11:51,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:43" (2/3) ... [2018-11-07 15:11:51,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65cdeb52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:11:51, skipping insertion in model container [2018-11-07 15:11:51,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:11:51" (3/3) ... [2018-11-07 15:11:51,170 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label43_true-unreach-call.c [2018-11-07 15:11:51,180 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:11:51,191 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:11:51,208 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:11:51,253 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:11:51,253 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:11:51,254 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:11:51,254 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:11:51,254 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:11:51,254 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:11:51,254 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:11:51,255 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:11:51,288 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 15:11:51,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-11-07 15:11:51,299 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:11:51,300 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:11:51,302 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:11:51,309 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:11:51,309 INFO L82 PathProgramCache]: Analyzing trace with hash 907062017, now seen corresponding path program 1 times [2018-11-07 15:11:51,312 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:11:51,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:11:51,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:11:51,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:11:51,367 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:11:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:11:51,877 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 15:11:51,972 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 15:11:51,975 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:11:51,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:11:51,975 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:11:51,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:11:52,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:11:52,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:11:52,032 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 15:11:58,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:11:58,215 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-11-07 15:11:58,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:11:58,217 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2018-11-07 15:11:58,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:11:58,247 INFO L225 Difference]: With dead ends: 1558 [2018-11-07 15:11:58,247 INFO L226 Difference]: Without dead ends: 1114 [2018-11-07 15:11:58,256 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:11:58,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-11-07 15:11:58,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 759. [2018-11-07 15:11:58,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2018-11-07 15:11:58,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1355 transitions. [2018-11-07 15:11:58,370 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1355 transitions. Word has length 65 [2018-11-07 15:11:58,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:11:58,371 INFO L480 AbstractCegarLoop]: Abstraction has 759 states and 1355 transitions. [2018-11-07 15:11:58,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:11:58,372 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1355 transitions. [2018-11-07 15:11:58,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-11-07 15:11:58,381 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:11:58,381 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, 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] [2018-11-07 15:11:58,381 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:11:58,382 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:11:58,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1501715637, now seen corresponding path program 1 times [2018-11-07 15:11:58,382 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:11:58,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:11:58,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:11:58,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:11:58,384 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:11:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:11:58,652 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:11:58,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:11:58,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:11:58,653 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:11:58,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:11:58,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:11:58,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:11:58,656 INFO L87 Difference]: Start difference. First operand 759 states and 1355 transitions. Second operand 4 states. [2018-11-07 15:12:03,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:12:04,000 INFO L93 Difference]: Finished difference Result 2760 states and 5146 transitions. [2018-11-07 15:12:04,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:12:04,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2018-11-07 15:12:04,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:12:04,027 INFO L225 Difference]: With dead ends: 2760 [2018-11-07 15:12:04,027 INFO L226 Difference]: Without dead ends: 2007 [2018-11-07 15:12:04,037 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:12:04,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2018-11-07 15:12:04,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 2002. [2018-11-07 15:12:04,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2002 states. [2018-11-07 15:12:04,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 3249 transitions. [2018-11-07 15:12:04,136 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 3249 transitions. Word has length 135 [2018-11-07 15:12:04,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:12:04,136 INFO L480 AbstractCegarLoop]: Abstraction has 2002 states and 3249 transitions. [2018-11-07 15:12:04,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:12:04,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 3249 transitions. [2018-11-07 15:12:04,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-11-07 15:12:04,152 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:12:04,152 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:12:04,154 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:12:04,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:12:04,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1679120985, now seen corresponding path program 1 times [2018-11-07 15:12:04,155 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:12:04,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:12:04,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:12:04,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:12:04,157 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:12:04,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:12:04,575 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:12:04,575 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:12:04,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 15:12:04,576 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:12:04,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 15:12:04,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 15:12:04,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 15:12:04,578 INFO L87 Difference]: Start difference. First operand 2002 states and 3249 transitions. Second operand 5 states. [2018-11-07 15:12:13,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:12:13,550 INFO L93 Difference]: Finished difference Result 6848 states and 11362 transitions. [2018-11-07 15:12:13,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 15:12:13,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2018-11-07 15:12:13,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:12:13,601 INFO L225 Difference]: With dead ends: 6848 [2018-11-07 15:12:13,602 INFO L226 Difference]: Without dead ends: 4852 [2018-11-07 15:12:13,629 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:12:13,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4852 states. [2018-11-07 15:12:13,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4852 to 4806. [2018-11-07 15:12:13,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4806 states. [2018-11-07 15:12:13,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4806 states to 4806 states and 7211 transitions. [2018-11-07 15:12:13,826 INFO L78 Accepts]: Start accepts. Automaton has 4806 states and 7211 transitions. Word has length 216 [2018-11-07 15:12:13,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:12:13,827 INFO L480 AbstractCegarLoop]: Abstraction has 4806 states and 7211 transitions. [2018-11-07 15:12:13,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 15:12:13,827 INFO L276 IsEmpty]: Start isEmpty. Operand 4806 states and 7211 transitions. [2018-11-07 15:12:13,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-11-07 15:12:13,846 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:12:13,846 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:12:13,847 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:12:13,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:12:13,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1565078656, now seen corresponding path program 1 times [2018-11-07 15:12:13,848 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:12:13,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:12:13,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:12:13,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:12:13,849 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:12:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:12:14,083 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 116 proven. 79 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 15:12:14,084 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:12:14,084 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:12:14,085 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 241 with the following transitions: [2018-11-07 15:12:14,087 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [493], [495], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [671], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 15:12:14,136 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:12:14,136 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:12:14,559 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 15:12:15,269 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:12:15,273 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 15:12:15,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:12:15,322 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:12:16,651 INFO L227 lantSequenceWeakener]: Weakened 231 states. On average, predicates are now at 78.18% of their original sizes. [2018-11-07 15:12:16,652 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:12:16,910 INFO L415 sIntCurrentIteration]: We unified 239 AI predicates to 239 [2018-11-07 15:12:16,911 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:12:16,912 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:12:16,912 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 15:12:16,912 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:12:16,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 15:12:16,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 15:12:16,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 15:12:16,914 INFO L87 Difference]: Start difference. First operand 4806 states and 7211 transitions. Second operand 7 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown