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/Problem11_label28_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:28:59,085 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:28:59,087 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:28:59,100 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:28:59,100 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:28:59,101 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:28:59,103 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:28:59,105 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:28:59,107 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:28:59,108 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:28:59,109 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:28:59,109 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:28:59,110 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:28:59,111 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:28:59,113 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:28:59,113 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:28:59,114 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:28:59,117 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:28:59,123 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:28:59,127 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:28:59,128 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:28:59,133 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:28:59,139 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:28:59,139 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:28:59,139 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:28:59,143 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:28:59,147 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:28:59,148 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:28:59,149 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:28:59,154 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:28:59,154 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:28:59,155 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:28:59,155 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:28:59,156 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:28:59,157 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:28:59,159 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:28:59,159 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 14:28:59,195 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:28:59,195 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:28:59,196 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:28:59,196 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:28:59,196 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:28:59,197 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:28:59,197 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:28:59,197 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:28:59,197 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:28:59,197 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:28:59,197 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:28:59,198 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:28:59,199 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:28:59,199 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:28:59,199 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:28:59,199 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:28:59,200 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:28:59,200 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:28:59,200 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:28:59,200 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:28:59,200 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:28:59,200 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:28:59,202 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:28:59,203 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:28:59,203 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:28:59,203 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:28:59,203 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:28:59,203 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:28:59,205 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:28:59,205 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:28:59,205 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:28:59,205 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:28:59,205 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:28:59,206 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:28:59,259 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:28:59,272 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:28:59,275 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:28:59,276 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:28:59,276 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:28:59,277 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label28_true-unreach-call.c [2018-11-07 14:28:59,341 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd57752a8/bcfc5e2eadcb40d4a9e0dc7bbcd63e96/FLAG3492cc745 [2018-11-07 14:28:59,959 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:28:59,960 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label28_true-unreach-call.c [2018-11-07 14:28:59,980 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd57752a8/bcfc5e2eadcb40d4a9e0dc7bbcd63e96/FLAG3492cc745 [2018-11-07 14:29:00,002 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd57752a8/bcfc5e2eadcb40d4a9e0dc7bbcd63e96 [2018-11-07 14:29:00,015 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:29:00,017 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:29:00,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:29:00,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:29:00,024 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:29:00,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:29:00" (1/1) ... [2018-11-07 14:29:00,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c35e21c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:29:00, skipping insertion in model container [2018-11-07 14:29:00,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:29:00" (1/1) ... [2018-11-07 14:29:00,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:29:00,132 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:29:00,727 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:29:00,732 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:29:00,929 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:29:00,948 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:29:00,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:29:00 WrapperNode [2018-11-07 14:29:00,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:29:00,950 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:29:00,950 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:29:00,950 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:29:00,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:29:00" (1/1) ... [2018-11-07 14:29:00,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:29:00" (1/1) ... [2018-11-07 14:29:01,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:29:01,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:29:01,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:29:01,142 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:29:01,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:29:00" (1/1) ... [2018-11-07 14:29:01,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:29:00" (1/1) ... [2018-11-07 14:29:01,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:29:00" (1/1) ... [2018-11-07 14:29:01,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:29:00" (1/1) ... [2018-11-07 14:29:01,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:29:00" (1/1) ... [2018-11-07 14:29:01,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:29:00" (1/1) ... [2018-11-07 14:29:01,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:29:00" (1/1) ... [2018-11-07 14:29:01,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:29:01,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:29:01,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:29:01,297 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:29:01,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:29:00" (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 14:29:01,365 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:29:01,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:29:01,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:29:01,366 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:29:01,367 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:29:01,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:29:01,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:29:01,367 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:29:01,367 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:29:05,272 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:29:05,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:29:05 BoogieIcfgContainer [2018-11-07 14:29:05,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:29:05,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:29:05,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:29:05,280 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:29:05,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:29:00" (1/3) ... [2018-11-07 14:29:05,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55152a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:29:05, skipping insertion in model container [2018-11-07 14:29:05,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:29:00" (2/3) ... [2018-11-07 14:29:05,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55152a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:29:05, skipping insertion in model container [2018-11-07 14:29:05,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:29:05" (3/3) ... [2018-11-07 14:29:05,285 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label28_true-unreach-call.c [2018-11-07 14:29:05,294 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:29:05,302 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:29:05,317 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:29:05,360 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:29:05,361 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:29:05,361 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:29:05,361 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:29:05,361 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:29:05,362 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:29:05,362 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:29:05,362 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:29:05,393 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 14:29:05,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-11-07 14:29:05,403 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:29:05,404 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] [2018-11-07 14:29:05,407 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:29:05,412 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:29:05,413 INFO L82 PathProgramCache]: Analyzing trace with hash -718311439, now seen corresponding path program 1 times [2018-11-07 14:29:05,415 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:29:05,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:29:05,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:29:05,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:29:05,467 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:29:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:29:05,972 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 14:29:05,975 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:29:05,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:29:05,976 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:29:05,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:29:06,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:29:06,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:29:06,005 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-07 14:29:09,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:29:09,020 INFO L93 Difference]: Finished difference Result 982 states and 1758 transitions. [2018-11-07 14:29:09,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:29:09,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2018-11-07 14:29:09,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:29:09,045 INFO L225 Difference]: With dead ends: 982 [2018-11-07 14:29:09,046 INFO L226 Difference]: Without dead ends: 683 [2018-11-07 14:29:09,056 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:29:09,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2018-11-07 14:29:09,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2018-11-07 14:29:09,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2018-11-07 14:29:09,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1005 transitions. [2018-11-07 14:29:09,155 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1005 transitions. Word has length 55 [2018-11-07 14:29:09,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:29:09,155 INFO L480 AbstractCegarLoop]: Abstraction has 683 states and 1005 transitions. [2018-11-07 14:29:09,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:29:09,156 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1005 transitions. [2018-11-07 14:29:09,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-11-07 14:29:09,164 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:29:09,165 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:09,165 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:29:09,166 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:29:09,166 INFO L82 PathProgramCache]: Analyzing trace with hash -2084126164, now seen corresponding path program 1 times [2018-11-07 14:29:09,166 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:29:09,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:29:09,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:29:09,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:29:09,168 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:29:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:29:09,469 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:29:09,470 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:29:09,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:29:09,470 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:29:09,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:29:09,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:29:09,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:29:09,474 INFO L87 Difference]: Start difference. First operand 683 states and 1005 transitions. Second operand 4 states. [2018-11-07 14:29:12,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:29:12,925 INFO L93 Difference]: Finished difference Result 2512 states and 3858 transitions. [2018-11-07 14:29:12,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:29:12,927 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2018-11-07 14:29:12,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:29:12,949 INFO L225 Difference]: With dead ends: 2512 [2018-11-07 14:29:12,949 INFO L226 Difference]: Without dead ends: 1835 [2018-11-07 14:29:12,956 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 14:29:12,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2018-11-07 14:29:13,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1820. [2018-11-07 14:29:13,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1820 states. [2018-11-07 14:29:13,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 2585 transitions. [2018-11-07 14:29:13,063 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 2585 transitions. Word has length 129 [2018-11-07 14:29:13,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:29:13,064 INFO L480 AbstractCegarLoop]: Abstraction has 1820 states and 2585 transitions. [2018-11-07 14:29:13,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:29:13,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 2585 transitions. [2018-11-07 14:29:13,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-07 14:29:13,080 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:29:13,080 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:13,083 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:29:13,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:29:13,083 INFO L82 PathProgramCache]: Analyzing trace with hash 643157075, now seen corresponding path program 1 times [2018-11-07 14:29:13,083 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:29:13,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:29:13,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:29:13,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:29:13,085 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:29:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:29:13,346 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:29:13,346 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:29:13,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:29:13,347 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:29:13,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:29:13,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:29:13,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:29:13,348 INFO L87 Difference]: Start difference. First operand 1820 states and 2585 transitions. Second operand 6 states. [2018-11-07 14:29:17,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:29:17,599 INFO L93 Difference]: Finished difference Result 6276 states and 9168 transitions. [2018-11-07 14:29:17,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:29:17,601 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-11-07 14:29:17,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:29:17,636 INFO L225 Difference]: With dead ends: 6276 [2018-11-07 14:29:17,637 INFO L226 Difference]: Without dead ends: 4462 [2018-11-07 14:29:17,659 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-07 14:29:17,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4462 states. [2018-11-07 14:29:17,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4462 to 4307. [2018-11-07 14:29:17,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4307 states. [2018-11-07 14:29:17,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4307 states to 4307 states and 5763 transitions. [2018-11-07 14:29:17,801 INFO L78 Accepts]: Start accepts. Automaton has 4307 states and 5763 transitions. Word has length 136 [2018-11-07 14:29:17,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:29:17,802 INFO L480 AbstractCegarLoop]: Abstraction has 4307 states and 5763 transitions. [2018-11-07 14:29:17,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:29:17,802 INFO L276 IsEmpty]: Start isEmpty. Operand 4307 states and 5763 transitions. [2018-11-07 14:29:17,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-11-07 14:29:17,812 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:29:17,812 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, 2, 2, 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 14:29:17,813 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:29:17,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:29:17,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1736454008, now seen corresponding path program 1 times [2018-11-07 14:29:17,814 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:29:17,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:29:17,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:29:17,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:29:17,815 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:29:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:29:18,443 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 14:29:18,782 WARN L179 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-11-07 14:29:18,893 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 96 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 14:29:18,894 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:29:18,894 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:29:18,895 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 211 with the following transitions: [2018-11-07 14:29:18,897 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [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], [341], [343], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [538], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 14:29:18,947 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:29:18,948 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:29:19,546 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:29:20,229 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:29:20,231 INFO L272 AbstractInterpreter]: Visited 86 different actions 86 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 14:29:20,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:29:20,286 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:29:21,246 INFO L227 lantSequenceWeakener]: Weakened 201 states. On average, predicates are now at 73.64% of their original sizes. [2018-11-07 14:29:21,246 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:29:21,577 INFO L415 sIntCurrentIteration]: We unified 209 AI predicates to 209 [2018-11-07 14:29:21,577 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:29:21,578 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:29:21,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-11-07 14:29:21,579 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:29:21,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 14:29:21,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 14:29:21,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 14:29:21,580 INFO L87 Difference]: Start difference. First operand 4307 states and 5763 transitions. Second operand 7 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown