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/Problem18_label18_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:41:37,189 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:41:37,191 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:41:37,203 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:41:37,203 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:41:37,204 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:41:37,206 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:41:37,207 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:41:37,209 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:41:37,210 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:41:37,211 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:41:37,211 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:41:37,212 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:41:37,213 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:41:37,214 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:41:37,215 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:41:37,216 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:41:37,217 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:41:37,219 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:41:37,221 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:41:37,222 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:41:37,223 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:41:37,226 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:41:37,226 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:41:37,226 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:41:37,227 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:41:37,228 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:41:37,229 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:41:37,230 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:41:37,231 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:41:37,231 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:41:37,232 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:41:37,232 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:41:37,232 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:41:37,233 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:41:37,234 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:41:37,234 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 15:41:37,251 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:41:37,251 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:41:37,252 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:41:37,252 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:41:37,252 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:41:37,253 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:41:37,253 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:41:37,253 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:41:37,253 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:41:37,253 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:41:37,253 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:41:37,254 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:41:37,254 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:41:37,255 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:41:37,255 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:41:37,255 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:41:37,255 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:41:37,255 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:41:37,255 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:41:37,256 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:41:37,256 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:41:37,256 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:41:37,256 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:41:37,256 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:41:37,257 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:41:37,257 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:41:37,257 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:41:37,257 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:41:37,257 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:41:37,258 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:41:37,258 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:41:37,258 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:41:37,258 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:41:37,258 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:41:37,302 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:41:37,315 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:41:37,319 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:41:37,321 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:41:37,321 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:41:37,322 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label18_true-unreach-call.c [2018-11-07 15:41:37,380 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cb034bc7/39fecfc0bc2849ea8f92849ed5bce111/FLAG5d89ab331 [2018-11-07 15:41:38,208 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:41:38,209 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label18_true-unreach-call.c [2018-11-07 15:41:38,242 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cb034bc7/39fecfc0bc2849ea8f92849ed5bce111/FLAG5d89ab331 [2018-11-07 15:41:38,262 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cb034bc7/39fecfc0bc2849ea8f92849ed5bce111 [2018-11-07 15:41:38,275 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:41:38,277 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:41:38,279 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:41:38,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:41:38,286 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:41:38,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:41:38" (1/1) ... [2018-11-07 15:41:38,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60826613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:38, skipping insertion in model container [2018-11-07 15:41:38,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:41:38" (1/1) ... [2018-11-07 15:41:38,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:41:38,458 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:41:39,646 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:41:39,652 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:41:40,072 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:41:40,103 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:41:40,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:40 WrapperNode [2018-11-07 15:41:40,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:41:40,105 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:41:40,105 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:41:40,106 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:41:40,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:40" (1/1) ... [2018-11-07 15:41:40,461 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:40" (1/1) ... [2018-11-07 15:41:40,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:41:40,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:41:40,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:41:40,474 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:41:40,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:40" (1/1) ... [2018-11-07 15:41:40,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:40" (1/1) ... [2018-11-07 15:41:40,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:40" (1/1) ... [2018-11-07 15:41:40,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:40" (1/1) ... [2018-11-07 15:41:40,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:40" (1/1) ... [2018-11-07 15:41:40,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:40" (1/1) ... [2018-11-07 15:41:40,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:40" (1/1) ... [2018-11-07 15:41:40,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:41:40,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:41:40,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:41:40,725 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:41:40,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:40" (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 15:41:40,799 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:41:40,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:41:40,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:41:40,800 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 15:41:40,800 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 15:41:40,800 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:41:40,800 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:41:40,800 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:41:40,800 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:41:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:41:40,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:41:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:41:40,801 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:41:48,544 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:41:48,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:41:48 BoogieIcfgContainer [2018-11-07 15:41:48,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:41:48,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:41:48,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:41:48,550 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:41:48,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:41:38" (1/3) ... [2018-11-07 15:41:48,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c076d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:41:48, skipping insertion in model container [2018-11-07 15:41:48,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:41:40" (2/3) ... [2018-11-07 15:41:48,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c076d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:41:48, skipping insertion in model container [2018-11-07 15:41:48,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:41:48" (3/3) ... [2018-11-07 15:41:48,554 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label18_true-unreach-call.c [2018-11-07 15:41:48,565 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:41:48,576 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:41:48,593 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:41:48,641 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:41:48,641 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:41:48,642 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:41:48,642 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:41:48,642 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:41:48,642 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:41:48,642 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:41:48,643 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:41:48,683 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 15:41:48,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-11-07 15:41:48,694 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:41:48,695 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:41:48,699 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:41:48,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:41:48,705 INFO L82 PathProgramCache]: Analyzing trace with hash -502294996, now seen corresponding path program 1 times [2018-11-07 15:41:48,707 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:41:48,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:41:48,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:41:48,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:41:48,759 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:41:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:41:49,223 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:41:49,340 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 15:41:49,343 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:41:49,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 15:41:49,344 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:41:49,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:41:49,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:41:49,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:41:49,370 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 15:41:55,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:41:55,950 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 15:41:55,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:41:55,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2018-11-07 15:41:55,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:41:55,984 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 15:41:55,984 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 15:41:55,995 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:41:56,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 15:41:56,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 15:41:56,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 15:41:56,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-11-07 15:41:56,152 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 64 [2018-11-07 15:41:56,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:41:56,154 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-11-07 15:41:56,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:41:56,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-11-07 15:41:56,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-11-07 15:41:56,171 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:41:56,171 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:41:56,172 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:41:56,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:41:56,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1983682478, now seen corresponding path program 1 times [2018-11-07 15:41:56,173 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:41:56,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:41:56,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:41:56,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:41:56,174 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:41:56,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:41:56,513 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:41:56,513 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:41:56,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:41:56,514 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:41:56,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:41:56,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:41:56,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:41:56,517 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-11-07 15:42:06,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:42:06,398 INFO L93 Difference]: Finished difference Result 4416 states and 8482 transitions. [2018-11-07 15:42:06,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:42:06,399 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-11-07 15:42:06,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:42:06,420 INFO L225 Difference]: With dead ends: 4416 [2018-11-07 15:42:06,420 INFO L226 Difference]: Without dead ends: 2948 [2018-11-07 15:42:06,426 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:42:06,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2018-11-07 15:42:06,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 2922. [2018-11-07 15:42:06,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2922 states. [2018-11-07 15:42:06,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2922 states to 2922 states and 5419 transitions. [2018-11-07 15:42:06,523 INFO L78 Accepts]: Start accepts. Automaton has 2922 states and 5419 transitions. Word has length 154 [2018-11-07 15:42:06,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:42:06,524 INFO L480 AbstractCegarLoop]: Abstraction has 2922 states and 5419 transitions. [2018-11-07 15:42:06,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:42:06,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2922 states and 5419 transitions. [2018-11-07 15:42:06,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-11-07 15:42:06,531 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:42:06,531 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:06,531 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:42:06,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:42:06,532 INFO L82 PathProgramCache]: Analyzing trace with hash 119738927, now seen corresponding path program 1 times [2018-11-07 15:42:06,532 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:42:06,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:42:06,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:42:06,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:42:06,534 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:42:06,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:42:06,808 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:42:06,808 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:42:06,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:42:06,808 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:42:06,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:42:06,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:42:06,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:42:06,810 INFO L87 Difference]: Start difference. First operand 2922 states and 5419 transitions. Second operand 6 states. [2018-11-07 15:42:17,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:42:17,590 INFO L93 Difference]: Finished difference Result 11793 states and 22898 transitions. [2018-11-07 15:42:17,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 15:42:17,593 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 155 [2018-11-07 15:42:17,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:42:17,660 INFO L225 Difference]: With dead ends: 11793 [2018-11-07 15:42:17,661 INFO L226 Difference]: Without dead ends: 8877 [2018-11-07 15:42:17,694 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 15:42:17,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8877 states. [2018-11-07 15:42:17,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8877 to 8802. [2018-11-07 15:42:17,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8802 states. [2018-11-07 15:42:17,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8802 states to 8802 states and 14072 transitions. [2018-11-07 15:42:17,977 INFO L78 Accepts]: Start accepts. Automaton has 8802 states and 14072 transitions. Word has length 155 [2018-11-07 15:42:17,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:42:17,978 INFO L480 AbstractCegarLoop]: Abstraction has 8802 states and 14072 transitions. [2018-11-07 15:42:17,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:42:17,978 INFO L276 IsEmpty]: Start isEmpty. Operand 8802 states and 14072 transitions. [2018-11-07 15:42:17,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-11-07 15:42:17,986 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:42:17,986 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 15:42:17,987 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:42:17,987 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:42:17,987 INFO L82 PathProgramCache]: Analyzing trace with hash -720272287, now seen corresponding path program 1 times [2018-11-07 15:42:17,987 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:42:17,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:42:17,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:42:17,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:42:17,988 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:42:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:42:18,288 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:42:18,583 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 114 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 15:42:18,584 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:42:18,584 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:42:18,585 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 226 with the following transitions: [2018-11-07 15:42:18,587 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2035], [2037], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 15:42:18,649 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:42:18,652 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:42:19,198 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:42:19,199 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 15:42:19,248 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:42:19,248 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:42:19,717 INFO L227 lantSequenceWeakener]: Weakened 216 states. On average, predicates are now at 78.23% of their original sizes. [2018-11-07 15:42:19,717 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:42:19,916 INFO L415 sIntCurrentIteration]: We unified 224 AI predicates to 224 [2018-11-07 15:42:19,916 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:42:19,917 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:42:19,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-11-07 15:42:19,918 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:42:19,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 15:42:19,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 15:42:19,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 15:42:19,919 INFO L87 Difference]: Start difference. First operand 8802 states and 14072 transitions. Second operand 7 states. [2018-11-07 15:42:27,742 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