java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label25_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 11:53:44,218 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 11:53:44,220 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 11:53:44,233 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 11:53:44,233 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 11:53:44,234 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 11:53:44,236 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 11:53:44,237 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 11:53:44,239 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 11:53:44,240 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 11:53:44,241 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 11:53:44,241 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 11:53:44,242 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 11:53:44,243 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 11:53:44,244 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 11:53:44,245 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 11:53:44,246 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 11:53:44,248 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 11:53:44,250 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 11:53:44,252 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 11:53:44,253 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 11:53:44,257 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 11:53:44,262 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 11:53:44,262 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 11:53:44,262 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 11:53:44,263 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 11:53:44,266 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 11:53:44,267 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 11:53:44,268 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 11:53:44,269 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 11:53:44,271 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 11:53:44,272 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 11:53:44,272 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 11:53:44,272 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 11:53:44,273 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 11:53:44,276 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 11:53:44,276 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 11:53:44,306 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 11:53:44,306 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 11:53:44,307 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 11:53:44,307 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 11:53:44,307 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 11:53:44,307 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 11:53:44,308 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 11:53:44,308 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 11:53:44,308 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 11:53:44,308 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 11:53:44,309 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 11:53:44,309 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 11:53:44,309 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 11:53:44,310 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 11:53:44,311 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 11:53:44,311 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 11:53:44,311 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 11:53:44,311 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 11:53:44,312 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 11:53:44,312 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 11:53:44,312 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 11:53:44,312 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 11:53:44,312 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 11:53:44,312 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 11:53:44,314 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 11:53:44,314 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 11:53:44,314 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 11:53:44,314 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 11:53:44,315 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 11:53:44,315 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 11:53:44,315 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 11:53:44,315 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 11:53:44,315 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 11:53:44,316 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 11:53:44,363 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 11:53:44,379 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 11:53:44,383 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 11:53:44,385 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 11:53:44,385 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 11:53:44,386 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label25_false-unreach-call.c [2018-10-27 11:53:44,455 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/132142744/9ba0006a1f684e1ba2ed656668738487/FLAG4abcf75df [2018-10-27 11:53:45,231 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 11:53:45,233 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label25_false-unreach-call.c [2018-10-27 11:53:45,264 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/132142744/9ba0006a1f684e1ba2ed656668738487/FLAG4abcf75df [2018-10-27 11:53:45,284 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/132142744/9ba0006a1f684e1ba2ed656668738487 [2018-10-27 11:53:45,297 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 11:53:45,300 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 11:53:45,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 11:53:45,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 11:53:45,306 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 11:53:45,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:53:45" (1/1) ... [2018-10-27 11:53:45,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8de4687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:53:45, skipping insertion in model container [2018-10-27 11:53:45,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:53:45" (1/1) ... [2018-10-27 11:53:45,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 11:53:45,462 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 11:53:46,467 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:53:46,472 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 11:53:46,878 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:53:46,902 INFO L193 MainTranslator]: Completed translation [2018-10-27 11:53:46,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:53:46 WrapperNode [2018-10-27 11:53:46,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 11:53:46,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 11:53:46,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 11:53:46,904 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 11:53:46,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:53:46" (1/1) ... [2018-10-27 11:53:46,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:53:46" (1/1) ... [2018-10-27 11:53:47,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 11:53:47,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 11:53:47,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 11:53:47,412 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 11:53:47,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:53:46" (1/1) ... [2018-10-27 11:53:47,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:53:46" (1/1) ... [2018-10-27 11:53:47,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:53:46" (1/1) ... [2018-10-27 11:53:47,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:53:46" (1/1) ... [2018-10-27 11:53:47,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:53:46" (1/1) ... [2018-10-27 11:53:47,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:53:46" (1/1) ... [2018-10-27 11:53:47,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:53:46" (1/1) ... [2018-10-27 11:53:47,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 11:53:47,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 11:53:47,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 11:53:47,757 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 11:53:47,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:53:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 11:53:47,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 11:53:47,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 11:53:47,831 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 11:53:47,832 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 11:53:47,832 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 11:53:47,832 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 11:53:47,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 11:53:47,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 11:53:47,833 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 11:53:47,833 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 11:54:00,138 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 11:54:00,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:54:00 BoogieIcfgContainer [2018-10-27 11:54:00,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 11:54:00,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 11:54:00,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 11:54:00,144 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 11:54:00,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:53:45" (1/3) ... [2018-10-27 11:54:00,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b3a4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:54:00, skipping insertion in model container [2018-10-27 11:54:00,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:53:46" (2/3) ... [2018-10-27 11:54:00,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b3a4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:54:00, skipping insertion in model container [2018-10-27 11:54:00,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:54:00" (3/3) ... [2018-10-27 11:54:00,148 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label25_false-unreach-call.c [2018-10-27 11:54:00,158 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 11:54:00,168 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 11:54:00,186 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 11:54:00,229 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 11:54:00,229 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 11:54:00,229 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 11:54:00,229 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 11:54:00,230 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 11:54:00,230 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 11:54:00,230 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 11:54:00,230 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 11:54:00,267 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-27 11:54:00,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-27 11:54:00,275 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:54:00,277 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] [2018-10-27 11:54:00,282 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:54:00,290 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:54:00,291 INFO L82 PathProgramCache]: Analyzing trace with hash 621618756, now seen corresponding path program 1 times [2018-10-27 11:54:00,294 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:54:00,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:54:00,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:54:00,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:54:00,347 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:54:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:54:00,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:54:00,769 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:54:00,770 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 11:54:00,770 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:54:00,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 11:54:00,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 11:54:00,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 11:54:00,797 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-27 11:54:14,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:54:14,361 INFO L93 Difference]: Finished difference Result 2133 states and 3959 transitions. [2018-10-27 11:54:14,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 11:54:14,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-10-27 11:54:14,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:54:14,408 INFO L225 Difference]: With dead ends: 2133 [2018-10-27 11:54:14,408 INFO L226 Difference]: Without dead ends: 1523 [2018-10-27 11:54:14,421 INFO L605 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 [2018-10-27 11:54:14,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2018-10-27 11:54:14,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1516. [2018-10-27 11:54:14,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1516 states. [2018-10-27 11:54:14,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 2287 transitions. [2018-10-27 11:54:14,607 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 2287 transitions. Word has length 30 [2018-10-27 11:54:14,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:54:14,608 INFO L481 AbstractCegarLoop]: Abstraction has 1516 states and 2287 transitions. [2018-10-27 11:54:14,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 11:54:14,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 2287 transitions. [2018-10-27 11:54:14,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-27 11:54:14,617 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:54:14,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 11:54:14,620 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:54:14,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:54:14,620 INFO L82 PathProgramCache]: Analyzing trace with hash -2146255078, now seen corresponding path program 1 times [2018-10-27 11:54:14,620 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:54:14,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:54:14,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:54:14,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:54:14,623 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:54:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:54:15,182 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:54:15,183 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 11:54:15,183 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 11:54:15,184 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 106 with the following transitions: [2018-10-27 11:54:15,188 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [850], [852], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 11:54:15,240 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 11:54:15,240 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 11:54:15,623 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 11:54:18,469 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 11:54:18,471 INFO L272 AbstractInterpreter]: Visited 82 different actions 462 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 11:54:18,517 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:54:18,517 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 11:54:19,119 INFO L227 lantSequenceWeakener]: Weakened 102 states. On average, predicates are now at 75.36% of their original sizes. [2018-10-27 11:54:19,120 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 11:54:19,679 INFO L415 sIntCurrentIteration]: We unified 104 AI predicates to 104 [2018-10-27 11:54:19,679 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 11:54:19,680 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 11:54:19,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-10-27 11:54:19,681 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:54:19,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 11:54:19,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 11:54:19,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-27 11:54:19,684 INFO L87 Difference]: Start difference. First operand 1516 states and 2287 transitions. Second operand 9 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown