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/Problem16_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:26:41,165 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:26:41,167 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:26:41,179 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:26:41,179 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:26:41,180 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:26:41,182 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:26:41,186 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:26:41,188 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:26:41,189 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:26:41,190 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:26:41,190 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:26:41,192 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:26:41,193 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:26:41,195 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:26:41,196 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:26:41,198 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:26:41,206 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:26:41,208 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:26:41,209 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:26:41,213 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:26:41,214 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:26:41,217 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:26:41,217 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:26:41,217 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:26:41,218 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:26:41,221 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:26:41,221 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:26:41,225 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:26:41,226 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:26:41,226 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:26:41,229 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:26:41,229 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:26:41,230 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:26:41,231 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:26:41,231 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:26:41,232 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 15:26:41,260 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:26:41,260 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:26:41,261 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:26:41,261 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:26:41,262 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:26:41,262 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:26:41,262 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:26:41,262 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:26:41,262 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:26:41,263 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:26:41,263 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:26:41,263 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:26:41,264 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:26:41,264 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:26:41,264 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:26:41,264 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:26:41,264 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:26:41,265 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:26:41,265 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:26:41,265 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:26:41,265 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:26:41,265 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:26:41,266 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:26:41,266 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:26:41,266 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:26:41,266 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:26:41,266 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:26:41,267 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:26:41,267 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:26:41,267 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:26:41,267 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:26:41,267 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:26:41,268 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:26:41,268 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:26:41,317 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:26:41,330 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:26:41,334 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:26:41,336 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:26:41,336 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:26:41,337 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label56_true-unreach-call.c [2018-11-07 15:26:41,397 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8675ef2ab/69d64896937045e6893b504cf7e05aeb/FLAG1b97406ac [2018-11-07 15:26:42,031 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:26:42,032 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label56_true-unreach-call.c [2018-11-07 15:26:42,053 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8675ef2ab/69d64896937045e6893b504cf7e05aeb/FLAG1b97406ac [2018-11-07 15:26:42,074 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8675ef2ab/69d64896937045e6893b504cf7e05aeb [2018-11-07 15:26:42,091 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:26:42,095 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:26:42,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:26:42,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:26:42,100 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:26:42,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:26:42" (1/1) ... [2018-11-07 15:26:42,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27c91a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:42, skipping insertion in model container [2018-11-07 15:26:42,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:26:42" (1/1) ... [2018-11-07 15:26:42,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:26:42,220 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:26:42,992 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:26:42,997 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:26:43,229 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:26:43,249 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:26:43,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:43 WrapperNode [2018-11-07 15:26:43,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:26:43,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:26:43,252 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:26:43,252 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:26:43,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:43" (1/1) ... [2018-11-07 15:26:43,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:43" (1/1) ... [2018-11-07 15:26:43,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:26:43,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:26:43,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:26:43,463 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:26:43,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:43" (1/1) ... [2018-11-07 15:26:43,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:43" (1/1) ... [2018-11-07 15:26:43,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:43" (1/1) ... [2018-11-07 15:26:43,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:43" (1/1) ... [2018-11-07 15:26:43,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:43" (1/1) ... [2018-11-07 15:26:43,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:43" (1/1) ... [2018-11-07 15:26:43,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:43" (1/1) ... [2018-11-07 15:26:43,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:26:43,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:26:43,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:26:43,602 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:26:43,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:43" (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 15:26:43,673 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:26:43,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:26:43,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:26:43,674 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:26:43,674 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:26:43,675 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:26:43,675 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:26:43,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:26:43,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:26:43,675 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:26:43,676 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:26:49,743 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:26:49,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:26:49 BoogieIcfgContainer [2018-11-07 15:26:49,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:26:49,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:26:49,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:26:49,749 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:26:49,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:26:42" (1/3) ... [2018-11-07 15:26:49,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35da93e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:26:49, skipping insertion in model container [2018-11-07 15:26:49,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:43" (2/3) ... [2018-11-07 15:26:49,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35da93e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:26:49, skipping insertion in model container [2018-11-07 15:26:49,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:26:49" (3/3) ... [2018-11-07 15:26:49,753 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label56_true-unreach-call.c [2018-11-07 15:26:49,763 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:26:49,772 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:26:49,789 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:26:49,829 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:26:49,829 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:26:49,829 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:26:49,829 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:26:49,830 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:26:49,830 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:26:49,830 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:26:49,830 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:26:49,866 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 15:26:49,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-07 15:26:49,873 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:26:49,875 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] [2018-11-07 15:26:49,877 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:26:49,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:26:49,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1440344268, now seen corresponding path program 1 times [2018-11-07 15:26:49,885 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:26:49,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:26:49,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:26:49,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:26:49,931 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:26:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:26:50,387 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:26:50,542 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 15:26:50,545 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:26:50,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 15:26:50,545 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:26:50,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:26:50,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:26:50,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:26:50,572 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 15:26:54,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:26:54,354 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 15:26:54,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:26:54,356 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2018-11-07 15:26:54,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:26:54,381 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 15:26:54,381 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 15:26:54,391 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:26:54,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 15:26:54,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 15:26:54,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 15:26:54,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1353 transitions. [2018-11-07 15:26:54,544 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1353 transitions. Word has length 40 [2018-11-07 15:26:54,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:26:54,545 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1353 transitions. [2018-11-07 15:26:54,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:26:54,545 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1353 transitions. [2018-11-07 15:26:54,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-11-07 15:26:54,557 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:26:54,558 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:26:54,558 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:26:54,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:26:54,559 INFO L82 PathProgramCache]: Analyzing trace with hash 884268999, now seen corresponding path program 1 times [2018-11-07 15:26:54,559 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:26:54,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:26:54,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:26:54,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:26:54,562 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:26:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:26:54,944 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:26:54,945 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:26:54,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:26:54,945 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:26:54,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:26:54,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:26:54,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:26:54,948 INFO L87 Difference]: Start difference. First operand 744 states and 1353 transitions. Second operand 6 states. [2018-11-07 15:27:02,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:27:02,154 INFO L93 Difference]: Finished difference Result 2184 states and 3997 transitions. [2018-11-07 15:27:02,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:27:02,156 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2018-11-07 15:27:02,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:27:02,169 INFO L225 Difference]: With dead ends: 2184 [2018-11-07 15:27:02,169 INFO L226 Difference]: Without dead ends: 1446 [2018-11-07 15:27:02,175 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:27:02,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2018-11-07 15:27:02,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1425. [2018-11-07 15:27:02,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2018-11-07 15:27:02,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2267 transitions. [2018-11-07 15:27:02,227 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2267 transitions. Word has length 133 [2018-11-07 15:27:02,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:27:02,228 INFO L480 AbstractCegarLoop]: Abstraction has 1425 states and 2267 transitions. [2018-11-07 15:27:02,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:27:02,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2267 transitions. [2018-11-07 15:27:02,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-11-07 15:27:02,234 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:27:02,235 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 15:27:02,235 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:27:02,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:27:02,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1634663824, now seen corresponding path program 1 times [2018-11-07 15:27:02,236 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:27:02,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:27:02,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:27:02,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:27:02,237 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:27:02,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:27:02,588 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 66 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 15:27:02,588 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:27:02,588 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:27:02,589 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 245 with the following transitions: [2018-11-07 15:27:02,591 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [399], [401], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 15:27:02,640 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:27:02,641 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:27:03,409 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:27:03,412 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 15:27:03,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:27:03,457 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:27:04,455 INFO L227 lantSequenceWeakener]: Weakened 222 states. On average, predicates are now at 77.83% of their original sizes. [2018-11-07 15:27:04,455 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:27:05,258 INFO L415 sIntCurrentIteration]: We unified 243 AI predicates to 243 [2018-11-07 15:27:05,259 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:27:05,260 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:27:05,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 15:27:05,260 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:27:05,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 15:27:05,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 15:27:05,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 15:27:05,262 INFO L87 Difference]: Start difference. First operand 1425 states and 2267 transitions. Second operand 10 states. [2018-11-07 15:27:09,547 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown