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/Problem10_label30_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:18:58,141 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:18:58,143 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:18:58,155 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:18:58,155 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:18:58,156 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:18:58,158 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:18:58,160 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:18:58,162 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:18:58,163 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:18:58,164 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:18:58,164 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:18:58,165 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:18:58,166 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:18:58,167 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:18:58,168 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:18:58,169 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:18:58,173 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:18:58,175 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:18:58,182 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:18:58,183 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:18:58,184 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:18:58,192 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:18:58,193 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:18:58,193 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:18:58,194 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:18:58,195 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:18:58,196 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:18:58,197 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:18:58,198 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:18:58,198 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:18:58,200 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:18:58,200 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:18:58,200 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:18:58,203 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:18:58,203 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:18:58,205 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 14:18:58,237 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:18:58,238 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:18:58,239 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:18:58,239 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:18:58,239 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:18:58,239 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:18:58,239 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:18:58,240 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:18:58,240 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:18:58,240 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:18:58,240 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:18:58,240 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:18:58,244 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:18:58,244 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:18:58,244 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:18:58,244 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:18:58,245 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:18:58,245 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:18:58,245 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:18:58,245 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:18:58,245 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:18:58,247 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:18:58,247 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:18:58,248 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:18:58,248 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:18:58,248 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:18:58,248 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:18:58,248 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:18:58,249 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:18:58,249 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:18:58,249 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:18:58,249 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:18:58,249 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:18:58,249 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:18:58,292 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:18:58,304 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:18:58,308 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:18:58,309 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:18:58,310 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:18:58,311 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30_true-unreach-call.c [2018-11-07 14:18:58,370 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27d08ea55/2f1a7617215141498f27f69dbd484a0e/FLAGb792e1fd9 [2018-11-07 14:18:58,934 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:18:58,936 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label30_true-unreach-call.c [2018-11-07 14:18:58,952 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27d08ea55/2f1a7617215141498f27f69dbd484a0e/FLAGb792e1fd9 [2018-11-07 14:18:58,972 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27d08ea55/2f1a7617215141498f27f69dbd484a0e [2018-11-07 14:18:58,985 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:18:58,988 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:18:58,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:18:58,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:18:58,993 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:18:58,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:18:58" (1/1) ... [2018-11-07 14:18:58,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b29a96e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:58, skipping insertion in model container [2018-11-07 14:18:58,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:18:58" (1/1) ... [2018-11-07 14:18:59,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:18:59,084 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:18:59,515 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:18:59,519 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:18:59,613 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:18:59,630 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:18:59,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:59 WrapperNode [2018-11-07 14:18:59,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:18:59,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:18:59,632 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:18:59,632 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:18:59,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:59" (1/1) ... [2018-11-07 14:18:59,749 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:59" (1/1) ... [2018-11-07 14:18:59,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:18:59,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:18:59,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:18:59,758 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:18:59,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:59" (1/1) ... [2018-11-07 14:18:59,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:59" (1/1) ... [2018-11-07 14:18:59,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:59" (1/1) ... [2018-11-07 14:18:59,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:59" (1/1) ... [2018-11-07 14:18:59,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:59" (1/1) ... [2018-11-07 14:18:59,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:59" (1/1) ... [2018-11-07 14:18:59,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:59" (1/1) ... [2018-11-07 14:18:59,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:18:59,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:18:59,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:18:59,876 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:18:59,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:18:59,949 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:18:59,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:18:59,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:18:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:18:59,950 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:18:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:18:59,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:18:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:18:59,951 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:19:03,043 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:19:03,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:19:03 BoogieIcfgContainer [2018-11-07 14:19:03,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:19:03,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:19:03,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:19:03,049 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:19:03,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:18:58" (1/3) ... [2018-11-07 14:19:03,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe028fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:19:03, skipping insertion in model container [2018-11-07 14:19:03,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:59" (2/3) ... [2018-11-07 14:19:03,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe028fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:19:03, skipping insertion in model container [2018-11-07 14:19:03,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:19:03" (3/3) ... [2018-11-07 14:19:03,054 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label30_true-unreach-call.c [2018-11-07 14:19:03,062 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:19:03,069 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:19:03,084 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:19:03,137 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:19:03,138 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:19:03,138 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:19:03,138 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:19:03,138 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:19:03,140 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:19:03,140 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:19:03,140 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:19:03,178 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-11-07 14:19:03,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-07 14:19:03,186 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:19:03,187 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] [2018-11-07 14:19:03,189 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:19:03,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:19:03,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1431628569, now seen corresponding path program 1 times [2018-11-07 14:19:03,196 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:19:03,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:19:03,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:19:03,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:19:03,245 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:19:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:19:03,620 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:19:03,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:19:03,683 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:19:03,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 14:19:03,684 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:19:03,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 14:19:03,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 14:19:03,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:19:03,709 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-11-07 14:19:05,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:19:05,418 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-11-07 14:19:05,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 14:19:05,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2018-11-07 14:19:05,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:19:05,437 INFO L225 Difference]: With dead ends: 574 [2018-11-07 14:19:05,437 INFO L226 Difference]: Without dead ends: 356 [2018-11-07 14:19:05,445 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 14:19:05,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-11-07 14:19:05,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-11-07 14:19:05,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-11-07 14:19:05,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-11-07 14:19:05,517 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 41 [2018-11-07 14:19:05,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:19:05,518 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-11-07 14:19:05,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 14:19:05,518 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-11-07 14:19:05,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-11-07 14:19:05,525 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:19:05,526 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:19:05,526 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:19:05,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:19:05,527 INFO L82 PathProgramCache]: Analyzing trace with hash -965604765, now seen corresponding path program 1 times [2018-11-07 14:19:05,527 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:19:05,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:19:05,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:19:05,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:19:05,529 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:19:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:19:05,797 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:19:05,797 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:19:05,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 14:19:05,798 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:19:05,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 14:19:05,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 14:19:05,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 14:19:05,801 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-11-07 14:19:08,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:19:08,232 INFO L93 Difference]: Finished difference Result 1287 states and 2312 transitions. [2018-11-07 14:19:08,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 14:19:08,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2018-11-07 14:19:08,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:19:08,242 INFO L225 Difference]: With dead ends: 1287 [2018-11-07 14:19:08,242 INFO L226 Difference]: Without dead ends: 937 [2018-11-07 14:19:08,249 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 14:19:08,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2018-11-07 14:19:08,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 924. [2018-11-07 14:19:08,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2018-11-07 14:19:08,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1441 transitions. [2018-11-07 14:19:08,315 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1441 transitions. Word has length 124 [2018-11-07 14:19:08,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:19:08,316 INFO L480 AbstractCegarLoop]: Abstraction has 924 states and 1441 transitions. [2018-11-07 14:19:08,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 14:19:08,316 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1441 transitions. [2018-11-07 14:19:08,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-07 14:19:08,322 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:19:08,322 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:19:08,322 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:19:08,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:19:08,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1367473027, now seen corresponding path program 1 times [2018-11-07 14:19:08,323 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:19:08,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:19:08,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:19:08,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:19:08,325 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:19:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:19:08,612 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:19:08,612 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:19:08,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:19:08,613 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:19:08,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:19:08,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:19:08,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:19:08,614 INFO L87 Difference]: Start difference. First operand 924 states and 1441 transitions. Second operand 6 states. [2018-11-07 14:19:12,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:19:12,409 INFO L93 Difference]: Finished difference Result 2533 states and 4079 transitions. [2018-11-07 14:19:12,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:19:12,411 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-11-07 14:19:12,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:19:12,424 INFO L225 Difference]: With dead ends: 2533 [2018-11-07 14:19:12,425 INFO L226 Difference]: Without dead ends: 1615 [2018-11-07 14:19:12,435 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:19:12,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2018-11-07 14:19:12,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1584. [2018-11-07 14:19:12,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2018-11-07 14:19:12,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2317 transitions. [2018-11-07 14:19:12,502 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2317 transitions. Word has length 140 [2018-11-07 14:19:12,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:19:12,503 INFO L480 AbstractCegarLoop]: Abstraction has 1584 states and 2317 transitions. [2018-11-07 14:19:12,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:19:12,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2317 transitions. [2018-11-07 14:19:12,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-11-07 14:19:12,511 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:19:12,513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:19:12,513 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:19:12,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:19:12,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1368152781, now seen corresponding path program 1 times [2018-11-07 14:19:12,514 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:19:12,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:19:12,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:19:12,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:19:12,516 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:19:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:19:12,814 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:19:13,141 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:19:13,142 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:19:13,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:19:13,142 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:19:13,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:19:13,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:19:13,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:19:13,143 INFO L87 Difference]: Start difference. First operand 1584 states and 2317 transitions. Second operand 6 states. [2018-11-07 14:19:14,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:19:14,417 INFO L93 Difference]: Finished difference Result 3502 states and 5313 transitions. [2018-11-07 14:19:14,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:19:14,420 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2018-11-07 14:19:14,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:19:14,434 INFO L225 Difference]: With dead ends: 3502 [2018-11-07 14:19:14,434 INFO L226 Difference]: Without dead ends: 1924 [2018-11-07 14:19:14,441 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:19:14,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2018-11-07 14:19:14,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1885. [2018-11-07 14:19:14,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2018-11-07 14:19:14,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2678 transitions. [2018-11-07 14:19:14,501 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2678 transitions. Word has length 164 [2018-11-07 14:19:14,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:19:14,502 INFO L480 AbstractCegarLoop]: Abstraction has 1885 states and 2678 transitions. [2018-11-07 14:19:14,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:19:14,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2678 transitions. [2018-11-07 14:19:14,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-11-07 14:19:14,509 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:19:14,509 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:19:14,509 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:19:14,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:19:14,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1210373809, now seen corresponding path program 1 times [2018-11-07 14:19:14,510 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:19:14,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:19:14,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:19:14,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:19:14,511 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:19:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:19:15,017 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:19:15,017 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:19:15,017 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:19:15,019 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 196 with the following transitions: [2018-11-07 14:19:15,028 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [229], [231], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [546], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 14:19:15,099 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:19:15,100 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:19:15,593 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:19:16,085 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:19:16,087 INFO L272 AbstractInterpreter]: Visited 91 different actions 260 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 14:19:16,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:19:16,131 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:19:16,695 INFO L227 lantSequenceWeakener]: Weakened 52 states. On average, predicates are now at 75.48% of their original sizes. [2018-11-07 14:19:16,695 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:19:17,928 INFO L415 sIntCurrentIteration]: We unified 194 AI predicates to 194 [2018-11-07 14:19:17,928 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:19:17,929 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:19:17,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-11-07 14:19:17,929 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:19:17,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 14:19:17,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 14:19:17,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-07 14:19:17,931 INFO L87 Difference]: Start difference. First operand 1885 states and 2678 transitions. Second operand 21 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown