java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:14:16,196 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:14:16,199 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:14:16,211 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:14:16,211 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:14:16,212 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:14:16,214 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:14:16,216 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:14:16,218 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:14:16,219 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:14:16,220 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:14:16,220 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:14:16,221 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:14:16,222 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:14:16,223 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:14:16,224 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:14:16,225 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:14:16,227 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:14:16,229 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:14:16,230 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:14:16,232 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:14:16,233 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:14:16,236 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:14:16,236 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:14:16,237 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:14:16,238 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:14:16,239 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:14:16,240 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:14:16,240 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:14:16,244 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:14:16,244 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:14:16,245 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:14:16,245 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:14:16,248 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:14:16,249 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:14:16,251 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:14:16,252 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 15:14:16,286 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:14:16,286 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:14:16,287 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:14:16,287 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:14:16,287 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:14:16,287 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:14:16,288 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:14:16,288 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:14:16,288 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:14:16,288 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:14:16,288 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:14:16,289 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:14:16,290 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:14:16,290 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:14:16,290 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:14:16,290 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:14:16,291 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:14:16,291 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:14:16,291 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:14:16,291 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:14:16,291 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:14:16,291 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:14:16,293 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:14:16,293 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:14:16,293 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:14:16,293 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:14:16,293 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:14:16,294 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:14:16,294 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:14:16,294 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:14:16,294 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:14:16,294 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:14:16,294 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:14:16,295 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:14:16,359 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:14:16,375 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:14:16,379 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:14:16,381 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:14:16,381 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:14:16,382 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label49_true-unreach-call.c [2018-11-07 15:14:16,444 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/feab919d9/5e7a6291ef3f497fa2b79601c61416ed/FLAGcae7185ec [2018-11-07 15:14:17,129 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:14:17,130 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label49_true-unreach-call.c [2018-11-07 15:14:17,153 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/feab919d9/5e7a6291ef3f497fa2b79601c61416ed/FLAGcae7185ec [2018-11-07 15:14:17,173 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/feab919d9/5e7a6291ef3f497fa2b79601c61416ed [2018-11-07 15:14:17,184 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:14:17,186 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:14:17,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:14:17,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:14:17,191 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:14:17,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:14:17" (1/1) ... [2018-11-07 15:14:17,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31dfa5de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:17, skipping insertion in model container [2018-11-07 15:14:17,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:14:17" (1/1) ... [2018-11-07 15:14:17,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:14:17,292 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:14:18,092 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:14:18,097 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:14:18,394 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:14:18,416 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:14:18,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:18 WrapperNode [2018-11-07 15:14:18,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:14:18,417 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:14:18,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:14:18,418 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:14:18,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:18" (1/1) ... [2018-11-07 15:14:18,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:18" (1/1) ... [2018-11-07 15:14:18,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:14:18,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:14:18,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:14:18,623 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:14:18,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:18" (1/1) ... [2018-11-07 15:14:18,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:18" (1/1) ... [2018-11-07 15:14:18,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:18" (1/1) ... [2018-11-07 15:14:18,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:18" (1/1) ... [2018-11-07 15:14:18,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:18" (1/1) ... [2018-11-07 15:14:18,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:18" (1/1) ... [2018-11-07 15:14:18,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:18" (1/1) ... [2018-11-07 15:14:18,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:14:18,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:14:18,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:14:18,811 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:14:18,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:18" (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 15:14:18,880 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:14:18,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:14:18,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:14:18,880 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:14:18,881 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:14:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:14:18,882 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:14:18,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:14:18,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:14:18,882 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:14:18,883 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:14:24,729 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:14:24,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:14:24 BoogieIcfgContainer [2018-11-07 15:14:24,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:14:24,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:14:24,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:14:24,735 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:14:24,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:14:17" (1/3) ... [2018-11-07 15:14:24,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4abd78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:14:24, skipping insertion in model container [2018-11-07 15:14:24,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:14:18" (2/3) ... [2018-11-07 15:14:24,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4abd78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:14:24, skipping insertion in model container [2018-11-07 15:14:24,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:14:24" (3/3) ... [2018-11-07 15:14:24,738 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label49_true-unreach-call.c [2018-11-07 15:14:24,749 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:14:24,758 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:14:24,772 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:14:24,813 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:14:24,813 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:14:24,814 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:14:24,814 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:14:24,814 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:14:24,814 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:14:24,814 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:14:24,814 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:14:24,847 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 15:14:24,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-11-07 15:14:24,857 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:14:24,859 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] [2018-11-07 15:14:24,862 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:14:24,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:14:24,868 INFO L82 PathProgramCache]: Analyzing trace with hash -224629815, now seen corresponding path program 1 times [2018-11-07 15:14:24,871 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:14:24,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:14:24,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:14:24,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:14:24,923 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:14:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:14:25,452 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 15:14:25,457 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:14:25,457 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:14:25,457 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:14:25,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:14:25,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:14:25,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:14:25,499 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 15:14:32,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:14:32,108 INFO L93 Difference]: Finished difference Result 1550 states and 2835 transitions. [2018-11-07 15:14:32,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:14:32,110 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2018-11-07 15:14:32,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:14:32,140 INFO L225 Difference]: With dead ends: 1550 [2018-11-07 15:14:32,140 INFO L226 Difference]: Without dead ends: 1106 [2018-11-07 15:14:32,149 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:14:32,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2018-11-07 15:14:32,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 762. [2018-11-07 15:14:32,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2018-11-07 15:14:32,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1263 transitions. [2018-11-07 15:14:32,289 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1263 transitions. Word has length 59 [2018-11-07 15:14:32,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:14:32,291 INFO L480 AbstractCegarLoop]: Abstraction has 762 states and 1263 transitions. [2018-11-07 15:14:32,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:14:32,291 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1263 transitions. [2018-11-07 15:14:32,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-07 15:14:32,309 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:14:32,309 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, 1, 1, 1, 1, 1, 1, 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 15:14:32,309 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:14:32,310 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:14:32,310 INFO L82 PathProgramCache]: Analyzing trace with hash 311881044, now seen corresponding path program 1 times [2018-11-07 15:14:32,310 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:14:32,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:14:32,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:14:32,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:14:32,312 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:14:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:14:32,602 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:14:32,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:14:32,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 15:14:32,603 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:14:32,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 15:14:32,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 15:14:32,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 15:14:32,606 INFO L87 Difference]: Start difference. First operand 762 states and 1263 transitions. Second operand 5 states. [2018-11-07 15:14:37,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:14:37,692 INFO L93 Difference]: Finished difference Result 2248 states and 3762 transitions. [2018-11-07 15:14:37,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 15:14:37,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2018-11-07 15:14:37,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:14:37,705 INFO L225 Difference]: With dead ends: 2248 [2018-11-07 15:14:37,706 INFO L226 Difference]: Without dead ends: 1492 [2018-11-07 15:14:37,710 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:14:37,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2018-11-07 15:14:37,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1457. [2018-11-07 15:14:37,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2018-11-07 15:14:37,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2152 transitions. [2018-11-07 15:14:37,779 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2152 transitions. Word has length 132 [2018-11-07 15:14:37,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:14:37,780 INFO L480 AbstractCegarLoop]: Abstraction has 1457 states and 2152 transitions. [2018-11-07 15:14:37,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 15:14:37,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2152 transitions. [2018-11-07 15:14:37,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-07 15:14:37,789 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:14:37,790 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:37,790 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:14:37,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:14:37,790 INFO L82 PathProgramCache]: Analyzing trace with hash 827365732, now seen corresponding path program 1 times [2018-11-07 15:14:37,792 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:14:37,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:14:37,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:14:37,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:14:37,793 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:14:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:14:37,946 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:14:37,946 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:14:37,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:14:37,946 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:14:37,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:14:37,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:14:37,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:14:37,948 INFO L87 Difference]: Start difference. First operand 1457 states and 2152 transitions. Second operand 4 states. [2018-11-07 15:14:44,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:14:44,011 INFO L93 Difference]: Finished difference Result 5402 states and 8304 transitions. [2018-11-07 15:14:44,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:14:44,017 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2018-11-07 15:14:44,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:14:44,048 INFO L225 Difference]: With dead ends: 5402 [2018-11-07 15:14:44,049 INFO L226 Difference]: Without dead ends: 3951 [2018-11-07 15:14:44,064 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:14:44,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2018-11-07 15:14:44,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3948. [2018-11-07 15:14:44,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3948 states. [2018-11-07 15:14:44,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 5455 transitions. [2018-11-07 15:14:44,195 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 5455 transitions. Word has length 140 [2018-11-07 15:14:44,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:14:44,196 INFO L480 AbstractCegarLoop]: Abstraction has 3948 states and 5455 transitions. [2018-11-07 15:14:44,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:14:44,197 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 5455 transitions. [2018-11-07 15:14:44,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-07 15:14:44,201 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:14:44,201 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:44,202 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:14:44,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:14:44,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1388399790, now seen corresponding path program 1 times [2018-11-07 15:14:44,202 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:14:44,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:14:44,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:14:44,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:14:44,204 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:14:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:14:44,455 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:14:44,455 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:14:44,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:14:44,456 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:14:44,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:14:44,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:14:44,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:14:44,457 INFO L87 Difference]: Start difference. First operand 3948 states and 5455 transitions. Second operand 6 states. [2018-11-07 15:14:48,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:14:48,277 INFO L93 Difference]: Finished difference Result 9145 states and 12423 transitions. [2018-11-07 15:14:48,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:14:48,277 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-11-07 15:14:48,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:14:48,304 INFO L225 Difference]: With dead ends: 9145 [2018-11-07 15:14:48,305 INFO L226 Difference]: Without dead ends: 5203 [2018-11-07 15:14:48,329 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 15:14:48,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5203 states. [2018-11-07 15:14:48,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5203 to 5145. [2018-11-07 15:14:48,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5145 states. [2018-11-07 15:14:48,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 6605 transitions. [2018-11-07 15:14:48,472 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 6605 transitions. Word has length 146 [2018-11-07 15:14:48,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:14:48,473 INFO L480 AbstractCegarLoop]: Abstraction has 5145 states and 6605 transitions. [2018-11-07 15:14:48,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:14:48,473 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 6605 transitions. [2018-11-07 15:14:48,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-11-07 15:14:48,476 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:14:48,477 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:48,477 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:14:48,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:14:48,477 INFO L82 PathProgramCache]: Analyzing trace with hash 389844774, now seen corresponding path program 1 times [2018-11-07 15:14:48,478 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:14:48,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:14:48,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:14:48,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:14:48,479 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:14:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:14:49,082 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:14:49,083 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:14:49,083 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:14:49,084 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 172 with the following transitions: [2018-11-07 15:14:49,086 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [445], [447], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 15:14:49,137 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:14:49,138 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:14:49,718 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:14:49,719 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 15:14:49,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:14:49,773 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:14:50,331 INFO L227 lantSequenceWeakener]: Weakened 165 states. On average, predicates are now at 78.35% of their original sizes. [2018-11-07 15:14:50,331 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:14:50,836 INFO L415 sIntCurrentIteration]: We unified 170 AI predicates to 170 [2018-11-07 15:14:50,836 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:14:50,840 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:14:50,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-11-07 15:14:50,840 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:14:50,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 15:14:50,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 15:14:50,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:14:50,841 INFO L87 Difference]: Start difference. First operand 5145 states and 6605 transitions. Second operand 8 states. [2018-11-07 15:14:54,079 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