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-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label45_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 18:41:05,113 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 18:41:05,115 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 18:41:05,128 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 18:41:05,128 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 18:41:05,129 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 18:41:05,131 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 18:41:05,132 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 18:41:05,134 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 18:41:05,135 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 18:41:05,136 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 18:41:05,136 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 18:41:05,137 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 18:41:05,138 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 18:41:05,139 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 18:41:05,140 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 18:41:05,141 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 18:41:05,143 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 18:41:05,145 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 18:41:05,147 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 18:41:05,148 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 18:41:05,149 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 18:41:05,152 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 18:41:05,152 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 18:41:05,152 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 18:41:05,153 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 18:41:05,154 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 18:41:05,155 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 18:41:05,156 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 18:41:05,157 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 18:41:05,157 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 18:41:05,158 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 18:41:05,158 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 18:41:05,159 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 18:41:05,160 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 18:41:05,160 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 18:41:05,161 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-LIM.epf [2018-11-12 18:41:05,177 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 18:41:05,177 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 18:41:05,178 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 18:41:05,178 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 18:41:05,178 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 18:41:05,178 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 18:41:05,179 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 18:41:05,179 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 18:41:05,179 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 18:41:05,179 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 18:41:05,179 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 18:41:05,180 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 18:41:05,180 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 18:41:05,181 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 18:41:05,181 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 18:41:05,181 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 18:41:05,181 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 18:41:05,181 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 18:41:05,182 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 18:41:05,182 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 18:41:05,182 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 18:41:05,182 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 18:41:05,182 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 18:41:05,183 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 18:41:05,183 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 18:41:05,183 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 18:41:05,183 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 18:41:05,183 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 18:41:05,184 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 18:41:05,184 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 18:41:05,184 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 18:41:05,184 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 18:41:05,184 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 18:41:05,185 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 18:41:05,185 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 18:41:05,229 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 18:41:05,242 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 18:41:05,246 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 18:41:05,248 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 18:41:05,248 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 18:41:05,249 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label45_true-unreach-call.c [2018-11-12 18:41:05,309 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c2228370/b49df3720cbc4d828d401f630977889c/FLAGa8f03a2e1 [2018-11-12 18:41:05,971 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 18:41:05,973 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label45_true-unreach-call.c [2018-11-12 18:41:05,995 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c2228370/b49df3720cbc4d828d401f630977889c/FLAGa8f03a2e1 [2018-11-12 18:41:06,010 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c2228370/b49df3720cbc4d828d401f630977889c [2018-11-12 18:41:06,023 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 18:41:06,025 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 18:41:06,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 18:41:06,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 18:41:06,031 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 18:41:06,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:41:06" (1/1) ... [2018-11-12 18:41:06,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49326289 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:41:06, skipping insertion in model container [2018-11-12 18:41:06,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:41:06" (1/1) ... [2018-11-12 18:41:06,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 18:41:06,114 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 18:41:06,666 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:41:06,671 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 18:41:06,866 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:41:06,885 INFO L193 MainTranslator]: Completed translation [2018-11-12 18:41:06,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:41:06 WrapperNode [2018-11-12 18:41:06,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 18:41:06,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 18:41:06,888 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 18:41:06,888 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 18:41:06,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:41:06" (1/1) ... [2018-11-12 18:41:07,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:41:06" (1/1) ... [2018-11-12 18:41:07,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 18:41:07,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 18:41:07,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 18:41:07,063 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 18:41:07,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:41:06" (1/1) ... [2018-11-12 18:41:07,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:41:06" (1/1) ... [2018-11-12 18:41:07,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:41:06" (1/1) ... [2018-11-12 18:41:07,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:41:06" (1/1) ... [2018-11-12 18:41:07,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:41:06" (1/1) ... [2018-11-12 18:41:07,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:41:06" (1/1) ... [2018-11-12 18:41:07,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:41:06" (1/1) ... [2018-11-12 18:41:07,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 18:41:07,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 18:41:07,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 18:41:07,191 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 18:41:07,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:41:06" (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 [2018-11-12 18:41:07,267 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 18:41:07,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 18:41:07,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 18:41:07,268 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 18:41:07,268 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 18:41:07,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 18:41:07,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 18:41:07,268 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 18:41:07,271 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 18:41:11,912 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 18:41:11,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:41:11 BoogieIcfgContainer [2018-11-12 18:41:11,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 18:41:11,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 18:41:11,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 18:41:11,919 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 18:41:11,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 06:41:06" (1/3) ... [2018-11-12 18:41:11,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76757061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:41:11, skipping insertion in model container [2018-11-12 18:41:11,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:41:06" (2/3) ... [2018-11-12 18:41:11,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76757061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:41:11, skipping insertion in model container [2018-11-12 18:41:11,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:41:11" (3/3) ... [2018-11-12 18:41:11,923 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label45_true-unreach-call.c [2018-11-12 18:41:11,933 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 18:41:11,944 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 18:41:11,962 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 18:41:12,002 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 18:41:12,002 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 18:41:12,002 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 18:41:12,003 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 18:41:12,003 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 18:41:12,003 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 18:41:12,003 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 18:41:12,003 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 18:41:12,034 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-12 18:41:12,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-12 18:41:12,043 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:41:12,044 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] [2018-11-12 18:41:12,047 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:41:12,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:41:12,054 INFO L82 PathProgramCache]: Analyzing trace with hash -23841615, now seen corresponding path program 1 times [2018-11-12 18:41:12,057 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:41:12,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:41:12,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:41:12,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:41:12,111 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:41:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:41:12,604 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-12 18:41:12,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:41:12,618 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:41:12,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 18:41:12,618 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:41:12,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 18:41:12,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 18:41:12,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:41:12,646 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-12 18:41:15,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:41:15,940 INFO L93 Difference]: Finished difference Result 979 states and 1754 transitions. [2018-11-12 18:41:15,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 18:41:15,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-11-12 18:41:15,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:41:15,966 INFO L225 Difference]: With dead ends: 979 [2018-11-12 18:41:15,966 INFO L226 Difference]: Without dead ends: 680 [2018-11-12 18:41:15,975 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 [2018-11-12 18:41:15,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2018-11-12 18:41:16,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 484. [2018-11-12 18:41:16,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2018-11-12 18:41:16,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 730 transitions. [2018-11-12 18:41:16,113 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 730 transitions. Word has length 39 [2018-11-12 18:41:16,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:41:16,113 INFO L480 AbstractCegarLoop]: Abstraction has 484 states and 730 transitions. [2018-11-12 18:41:16,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 18:41:16,114 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 730 transitions. [2018-11-12 18:41:16,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-11-12 18:41:16,123 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:41:16,127 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:41:16,127 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:41:16,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:41:16,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1487845251, now seen corresponding path program 1 times [2018-11-12 18:41:16,128 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:41:16,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:41:16,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:41:16,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:41:16,131 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:41:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:41:16,528 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:41:16,667 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:41:16,667 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:41:16,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 18:41:16,667 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:41:16,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 18:41:16,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 18:41:16,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 18:41:16,670 INFO L87 Difference]: Start difference. First operand 484 states and 730 transitions. Second operand 6 states. [2018-11-12 18:41:20,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:41:20,738 INFO L93 Difference]: Finished difference Result 1555 states and 2493 transitions. [2018-11-12 18:41:20,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:41:20,745 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-11-12 18:41:20,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:41:20,753 INFO L225 Difference]: With dead ends: 1555 [2018-11-12 18:41:20,754 INFO L226 Difference]: Without dead ends: 1077 [2018-11-12 18:41:20,757 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 18:41:20,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2018-11-12 18:41:20,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1063. [2018-11-12 18:41:20,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2018-11-12 18:41:20,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1592 transitions. [2018-11-12 18:41:20,805 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1592 transitions. Word has length 112 [2018-11-12 18:41:20,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:41:20,806 INFO L480 AbstractCegarLoop]: Abstraction has 1063 states and 1592 transitions. [2018-11-12 18:41:20,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 18:41:20,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1592 transitions. [2018-11-12 18:41:20,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-12 18:41:20,809 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:41:20,810 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:41:20,810 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:41:20,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:41:20,810 INFO L82 PathProgramCache]: Analyzing trace with hash 84082156, now seen corresponding path program 1 times [2018-11-12 18:41:20,811 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:41:20,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:41:20,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:41:20,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:41:20,812 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:41:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:41:20,984 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:41:20,984 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:41:20,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 18:41:20,984 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:41:20,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 18:41:20,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 18:41:20,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:41:20,985 INFO L87 Difference]: Start difference. First operand 1063 states and 1592 transitions. Second operand 4 states. [2018-11-12 18:41:24,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:41:24,014 INFO L93 Difference]: Finished difference Result 2907 states and 4465 transitions. [2018-11-12 18:41:24,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 18:41:24,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2018-11-12 18:41:24,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:41:24,030 INFO L225 Difference]: With dead ends: 2907 [2018-11-12 18:41:24,031 INFO L226 Difference]: Without dead ends: 1850 [2018-11-12 18:41:24,037 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 [2018-11-12 18:41:24,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2018-11-12 18:41:24,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1646. [2018-11-12 18:41:24,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1646 states. [2018-11-12 18:41:24,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2436 transitions. [2018-11-12 18:41:24,100 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 2436 transitions. Word has length 113 [2018-11-12 18:41:24,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:41:24,100 INFO L480 AbstractCegarLoop]: Abstraction has 1646 states and 2436 transitions. [2018-11-12 18:41:24,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 18:41:24,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 2436 transitions. [2018-11-12 18:41:24,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-12 18:41:24,111 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:41:24,111 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:41:24,112 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:41:24,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:41:24,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1266440719, now seen corresponding path program 1 times [2018-11-12 18:41:24,112 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:41:24,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:41:24,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:41:24,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:41:24,116 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:41:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:41:24,374 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:41:24,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:41:24,375 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:41:24,376 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 135 with the following transitions: [2018-11-12 18:41:24,378 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], [213], [215], [218], [226], [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], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:41:24,432 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:41:24,432 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:41:25,140 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:41:25,148 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:41:25,150 INFO L272 AbstractInterpreter]: Visited 99 different actions 99 times. Never merged. Never widened. Performed 1099 root evaluator evaluations with a maximum evaluation depth of 6. Performed 1099 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 28 variables. [2018-11-12 18:41:25,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:41:25,190 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:41:25,666 INFO L227 lantSequenceWeakener]: Weakened 128 states. On average, predicates are now at 73.44% of their original sizes. [2018-11-12 18:41:25,667 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:41:26,004 INFO L415 sIntCurrentIteration]: We unified 133 AI predicates to 133 [2018-11-12 18:41:26,005 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:41:26,007 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:41:26,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-11-12 18:41:26,007 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:41:26,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 18:41:26,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 18:41:26,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 18:41:26,009 INFO L87 Difference]: Start difference. First operand 1646 states and 2436 transitions. Second operand 7 states. [2018-11-12 18:41:44,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:41:44,775 INFO L93 Difference]: Finished difference Result 3478 states and 5113 transitions. [2018-11-12 18:41:44,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:41:44,776 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2018-11-12 18:41:44,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:41:44,787 INFO L225 Difference]: With dead ends: 3478 [2018-11-12 18:41:44,787 INFO L226 Difference]: Without dead ends: 1838 [2018-11-12 18:41:44,793 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 134 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 18:41:44,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2018-11-12 18:41:44,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1836. [2018-11-12 18:41:44,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1836 states. [2018-11-12 18:41:44,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 2636 transitions. [2018-11-12 18:41:44,847 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 2636 transitions. Word has length 134 [2018-11-12 18:41:44,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:41:44,848 INFO L480 AbstractCegarLoop]: Abstraction has 1836 states and 2636 transitions. [2018-11-12 18:41:44,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 18:41:44,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 2636 transitions. [2018-11-12 18:41:44,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-11-12 18:41:44,854 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:41:44,854 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:41:44,855 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:41:44,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:41:44,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1523785897, now seen corresponding path program 1 times [2018-11-12 18:41:44,856 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:41:44,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:41:44,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:41:44,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:41:44,857 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:41:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:41:45,218 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-12 18:41:45,218 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:41:45,218 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:41:45,218 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-11-12 18:41:45,219 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], [213], [215], [218], [226], [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], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:41:45,224 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:41:45,224 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:41:45,319 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:41:45,637 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:41:45,638 INFO L272 AbstractInterpreter]: Visited 125 different actions 244 times. Merged at 5 different actions 5 times. Never widened. Performed 3022 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3022 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-12 18:41:45,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:41:45,674 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:41:46,136 INFO L227 lantSequenceWeakener]: Weakened 248 states. On average, predicates are now at 73.33% of their original sizes. [2018-11-12 18:41:46,137 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:41:46,590 INFO L415 sIntCurrentIteration]: We unified 250 AI predicates to 250 [2018-11-12 18:41:46,591 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:41:46,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:41:46,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 16 [2018-11-12 18:41:46,592 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:41:46,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 18:41:46,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 18:41:46,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 18:41:46,594 INFO L87 Difference]: Start difference. First operand 1836 states and 2636 transitions. Second operand 11 states. [2018-11-12 18:41:56,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:41:56,974 INFO L93 Difference]: Finished difference Result 3671 states and 5319 transitions. [2018-11-12 18:41:56,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-12 18:41:56,975 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 251 [2018-11-12 18:41:56,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:41:56,987 INFO L225 Difference]: With dead ends: 3671 [2018-11-12 18:41:56,987 INFO L226 Difference]: Without dead ends: 2031 [2018-11-12 18:41:56,994 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 259 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2018-11-12 18:41:56,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2018-11-12 18:41:57,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 2027. [2018-11-12 18:41:57,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2027 states. [2018-11-12 18:41:57,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 2846 transitions. [2018-11-12 18:41:57,050 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 2846 transitions. Word has length 251 [2018-11-12 18:41:57,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:41:57,051 INFO L480 AbstractCegarLoop]: Abstraction has 2027 states and 2846 transitions. [2018-11-12 18:41:57,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 18:41:57,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 2846 transitions. [2018-11-12 18:41:57,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-11-12 18:41:57,057 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:41:57,058 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:41:57,058 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:41:57,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:41:57,059 INFO L82 PathProgramCache]: Analyzing trace with hash -865429213, now seen corresponding path program 1 times [2018-11-12 18:41:57,059 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:41:57,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:41:57,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:41:57,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:41:57,060 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:41:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:41:57,547 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-12 18:41:58,385 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 4 proven. 67 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-11-12 18:41:58,385 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:41:58,385 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:41:58,386 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 262 with the following transitions: [2018-11-12 18:41:58,386 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], [213], [215], [218], [226], [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], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:41:58,391 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:41:58,392 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:41:58,494 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:41:58,913 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:41:58,913 INFO L272 AbstractInterpreter]: Visited 135 different actions 392 times. Merged at 5 different actions 9 times. Never widened. Performed 5098 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5098 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-12 18:41:58,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:41:58,922 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:41:59,772 INFO L227 lantSequenceWeakener]: Weakened 258 states. On average, predicates are now at 73.32% of their original sizes. [2018-11-12 18:41:59,773 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:42:00,000 INFO L415 sIntCurrentIteration]: We unified 260 AI predicates to 260 [2018-11-12 18:42:00,001 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:42:00,001 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:42:00,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2018-11-12 18:42:00,002 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:42:00,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 18:42:00,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 18:42:00,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 18:42:00,003 INFO L87 Difference]: Start difference. First operand 2027 states and 2846 transitions. Second operand 11 states. [2018-11-12 18:42:14,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:42:14,949 INFO L93 Difference]: Finished difference Result 4056 states and 5784 transitions. [2018-11-12 18:42:14,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 18:42:14,949 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 261 [2018-11-12 18:42:14,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:42:14,963 INFO L225 Difference]: With dead ends: 4056 [2018-11-12 18:42:14,963 INFO L226 Difference]: Without dead ends: 2416 [2018-11-12 18:42:14,971 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 270 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2018-11-12 18:42:14,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2018-11-12 18:42:15,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 2410. [2018-11-12 18:42:15,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2410 states. [2018-11-12 18:42:15,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2410 states to 2410 states and 3287 transitions. [2018-11-12 18:42:15,040 INFO L78 Accepts]: Start accepts. Automaton has 2410 states and 3287 transitions. Word has length 261 [2018-11-12 18:42:15,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:42:15,041 INFO L480 AbstractCegarLoop]: Abstraction has 2410 states and 3287 transitions. [2018-11-12 18:42:15,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 18:42:15,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2410 states and 3287 transitions. [2018-11-12 18:42:15,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-11-12 18:42:15,048 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:42:15,048 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:42:15,049 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:42:15,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:42:15,049 INFO L82 PathProgramCache]: Analyzing trace with hash -297981740, now seen corresponding path program 1 times [2018-11-12 18:42:15,049 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:42:15,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:42:15,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:42:15,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:42:15,051 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:42:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:42:15,409 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-11-12 18:42:15,410 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:42:15,410 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 18:42:15,410 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:42:15,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 18:42:15,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 18:42:15,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:42:15,411 INFO L87 Difference]: Start difference. First operand 2410 states and 3287 transitions. Second operand 4 states. [2018-11-12 18:42:17,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:42:17,347 INFO L93 Difference]: Finished difference Result 5921 states and 9141 transitions. [2018-11-12 18:42:17,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 18:42:17,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 263 [2018-11-12 18:42:17,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:42:17,377 INFO L225 Difference]: With dead ends: 5921 [2018-11-12 18:42:17,377 INFO L226 Difference]: Without dead ends: 4281 [2018-11-12 18:42:17,393 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:42:17,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4281 states. [2018-11-12 18:42:17,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4281 to 4279. [2018-11-12 18:42:17,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4279 states. [2018-11-12 18:42:17,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4279 states to 4279 states and 6032 transitions. [2018-11-12 18:42:17,519 INFO L78 Accepts]: Start accepts. Automaton has 4279 states and 6032 transitions. Word has length 263 [2018-11-12 18:42:17,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:42:17,519 INFO L480 AbstractCegarLoop]: Abstraction has 4279 states and 6032 transitions. [2018-11-12 18:42:17,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 18:42:17,520 INFO L276 IsEmpty]: Start isEmpty. Operand 4279 states and 6032 transitions. [2018-11-12 18:42:17,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-11-12 18:42:17,531 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:42:17,531 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:42:17,531 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:42:17,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:42:17,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1609848107, now seen corresponding path program 1 times [2018-11-12 18:42:17,532 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:42:17,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:42:17,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:42:17,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:42:17,533 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:42:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:42:17,991 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 71 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:42:17,991 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:42:17,991 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:42:17,991 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 267 with the following transitions: [2018-11-12 18:42:17,992 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], [213], [215], [218], [226], [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], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:42:17,997 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:42:17,997 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:42:18,097 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:42:18,818 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:42:18,819 INFO L272 AbstractInterpreter]: Visited 141 different actions 409 times. Merged at 5 different actions 9 times. Never widened. Performed 7724 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7724 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-12 18:42:18,825 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:42:18,826 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:42:18,826 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:42:18,826 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 18:42:18,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:42:18,838 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:42:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:42:18,961 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:42:20,273 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:42:20,273 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:42:20,477 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-11-12 18:42:20,721 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2018-11-12 18:42:21,337 WARN L179 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-11-12 18:42:22,104 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 65 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:42:22,126 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:42:22,126 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 21 [2018-11-12 18:42:22,126 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:42:22,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 18:42:22,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 18:42:22,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-12 18:42:22,128 INFO L87 Difference]: Start difference. First operand 4279 states and 6032 transitions. Second operand 16 states. [2018-11-12 18:42:34,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:42:34,591 INFO L93 Difference]: Finished difference Result 13033 states and 26836 transitions. [2018-11-12 18:42:34,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-11-12 18:42:34,597 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 266 [2018-11-12 18:42:34,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:42:34,755 INFO L225 Difference]: With dead ends: 13033 [2018-11-12 18:42:34,755 INFO L226 Difference]: Without dead ends: 9524 [2018-11-12 18:42:34,822 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 523 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1355 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=990, Invalid=3702, Unknown=0, NotChecked=0, Total=4692 [2018-11-12 18:42:34,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9524 states. [2018-11-12 18:42:35,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9524 to 8797. [2018-11-12 18:42:35,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8797 states. [2018-11-12 18:42:35,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8797 states to 8797 states and 12962 transitions. [2018-11-12 18:42:35,669 INFO L78 Accepts]: Start accepts. Automaton has 8797 states and 12962 transitions. Word has length 266 [2018-11-12 18:42:35,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:42:35,670 INFO L480 AbstractCegarLoop]: Abstraction has 8797 states and 12962 transitions. [2018-11-12 18:42:35,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 18:42:35,670 INFO L276 IsEmpty]: Start isEmpty. Operand 8797 states and 12962 transitions. [2018-11-12 18:42:35,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-11-12 18:42:35,683 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:42:35,684 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:42:35,684 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:42:35,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:42:35,684 INFO L82 PathProgramCache]: Analyzing trace with hash 795044918, now seen corresponding path program 1 times [2018-11-12 18:42:35,685 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:42:35,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:42:35,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:42:35,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:42:35,686 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:42:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:42:36,046 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 18:42:36,389 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-12 18:42:36,688 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-11-12 18:42:37,184 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-11-12 18:42:37,777 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 2 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:42:37,778 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:42:37,778 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:42:37,778 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 283 with the following transitions: [2018-11-12 18:42:37,778 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], [213], [215], [218], [226], [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], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [869], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:42:37,783 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:42:37,784 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:42:37,898 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:42:38,491 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:42:38,491 INFO L272 AbstractInterpreter]: Visited 156 different actions 455 times. Merged at 5 different actions 9 times. Never widened. Performed 10316 root evaluator evaluations with a maximum evaluation depth of 6. Performed 10316 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-12 18:42:38,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:42:38,497 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:42:39,174 INFO L227 lantSequenceWeakener]: Weakened 68 states. On average, predicates are now at 74.75% of their original sizes. [2018-11-12 18:42:39,174 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:42:39,692 INFO L415 sIntCurrentIteration]: We unified 281 AI predicates to 281 [2018-11-12 18:42:39,692 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:42:39,692 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:42:39,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [15] total 34 [2018-11-12 18:42:39,693 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:42:39,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-12 18:42:39,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-12 18:42:39,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2018-11-12 18:42:39,694 INFO L87 Difference]: Start difference. First operand 8797 states and 12962 transitions. Second operand 21 states. [2018-11-12 18:43:03,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:43:03,564 INFO L93 Difference]: Finished difference Result 18319 states and 26903 transitions. [2018-11-12 18:43:03,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-12 18:43:03,564 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 282 [2018-11-12 18:43:03,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:43:03,600 INFO L225 Difference]: With dead ends: 18319 [2018-11-12 18:43:03,600 INFO L226 Difference]: Without dead ends: 9908 [2018-11-12 18:43:03,619 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 300 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=297, Invalid=1263, Unknown=0, NotChecked=0, Total=1560 [2018-11-12 18:43:03,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9908 states. [2018-11-12 18:43:03,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9908 to 9892. [2018-11-12 18:43:03,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9892 states. [2018-11-12 18:43:03,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9892 states to 9892 states and 14195 transitions. [2018-11-12 18:43:03,847 INFO L78 Accepts]: Start accepts. Automaton has 9892 states and 14195 transitions. Word has length 282 [2018-11-12 18:43:03,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:43:03,848 INFO L480 AbstractCegarLoop]: Abstraction has 9892 states and 14195 transitions. [2018-11-12 18:43:03,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-12 18:43:03,848 INFO L276 IsEmpty]: Start isEmpty. Operand 9892 states and 14195 transitions. [2018-11-12 18:43:03,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-11-12 18:43:03,861 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:43:03,861 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:43:03,862 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:43:03,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:43:03,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1933325196, now seen corresponding path program 1 times [2018-11-12 18:43:03,862 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:43:03,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:43:03,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:43:03,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:43:03,863 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:43:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:43:04,461 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 59 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:43:04,461 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:43:04,461 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:43:04,461 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 289 with the following transitions: [2018-11-12 18:43:04,462 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], [213], [215], [218], [226], [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], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [784], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:43:04,465 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:43:04,465 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:43:04,617 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:43:05,134 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:43:05,134 INFO L272 AbstractInterpreter]: Visited 141 different actions 554 times. Merged at 7 different actions 25 times. Never widened. Performed 9662 root evaluator evaluations with a maximum evaluation depth of 6. Performed 9662 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-12 18:43:05,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:43:05,142 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:43:05,142 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:43:05,142 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 18:43:05,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:43:05,151 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:43:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:43:05,245 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:43:05,287 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-12 18:43:05,288 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:43:05,383 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-12 18:43:05,403 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:43:05,404 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 8 [2018-11-12 18:43:05,404 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:43:05,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 18:43:05,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 18:43:05,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-12 18:43:05,405 INFO L87 Difference]: Start difference. First operand 9892 states and 14195 transitions. Second operand 3 states. [2018-11-12 18:43:06,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:43:06,779 INFO L93 Difference]: Finished difference Result 20822 states and 31710 transitions. [2018-11-12 18:43:06,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 18:43:06,782 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 288 [2018-11-12 18:43:06,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:43:06,827 INFO L225 Difference]: With dead ends: 20822 [2018-11-12 18:43:06,827 INFO L226 Difference]: Without dead ends: 12799 [2018-11-12 18:43:06,855 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 578 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-12 18:43:06,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12799 states. [2018-11-12 18:43:07,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12799 to 12035. [2018-11-12 18:43:07,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12035 states. [2018-11-12 18:43:07,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12035 states to 12035 states and 17258 transitions. [2018-11-12 18:43:07,147 INFO L78 Accepts]: Start accepts. Automaton has 12035 states and 17258 transitions. Word has length 288 [2018-11-12 18:43:07,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:43:07,148 INFO L480 AbstractCegarLoop]: Abstraction has 12035 states and 17258 transitions. [2018-11-12 18:43:07,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 18:43:07,148 INFO L276 IsEmpty]: Start isEmpty. Operand 12035 states and 17258 transitions. [2018-11-12 18:43:07,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-11-12 18:43:07,169 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:43:07,169 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:43:07,170 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:43:07,170 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:43:07,170 INFO L82 PathProgramCache]: Analyzing trace with hash 469197944, now seen corresponding path program 1 times [2018-11-12 18:43:07,170 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:43:07,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:43:07,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:43:07,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:43:07,171 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:43:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:43:07,633 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-12 18:43:07,633 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:43:07,633 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:43:07,633 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 307 with the following transitions: [2018-11-12 18:43:07,634 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], [213], [215], [218], [226], [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], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [971], [975], [979], [983], [986], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:43:07,637 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:43:07,638 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:43:07,697 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:43:07,958 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:43:07,958 INFO L272 AbstractInterpreter]: Visited 180 different actions 354 times. Merged at 5 different actions 5 times. Never widened. Performed 5015 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5015 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-12 18:43:07,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:43:07,964 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:43:08,566 INFO L227 lantSequenceWeakener]: Weakened 172 states. On average, predicates are now at 73.79% of their original sizes. [2018-11-12 18:43:08,566 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:43:09,170 INFO L415 sIntCurrentIteration]: We unified 305 AI predicates to 305 [2018-11-12 18:43:09,170 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:43:09,171 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:43:09,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [7] total 25 [2018-11-12 18:43:09,171 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:43:09,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-12 18:43:09,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-12 18:43:09,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2018-11-12 18:43:09,173 INFO L87 Difference]: Start difference. First operand 12035 states and 17258 transitions. Second operand 20 states. [2018-11-12 18:43:27,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:43:27,524 INFO L93 Difference]: Finished difference Result 22589 states and 32965 transitions. [2018-11-12 18:43:27,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-12 18:43:27,524 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 306 [2018-11-12 18:43:27,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:43:27,571 INFO L225 Difference]: With dead ends: 22589 [2018-11-12 18:43:27,572 INFO L226 Difference]: Without dead ends: 12423 [2018-11-12 18:43:27,597 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 332 GetRequests, 275 SyntacticMatches, 12 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=409, Invalid=1753, Unknown=0, NotChecked=0, Total=2162 [2018-11-12 18:43:27,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12423 states. [2018-11-12 18:43:27,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12423 to 12415. [2018-11-12 18:43:27,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12415 states. [2018-11-12 18:43:27,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12415 states to 12415 states and 17682 transitions. [2018-11-12 18:43:27,895 INFO L78 Accepts]: Start accepts. Automaton has 12415 states and 17682 transitions. Word has length 306 [2018-11-12 18:43:27,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:43:27,896 INFO L480 AbstractCegarLoop]: Abstraction has 12415 states and 17682 transitions. [2018-11-12 18:43:27,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-12 18:43:27,896 INFO L276 IsEmpty]: Start isEmpty. Operand 12415 states and 17682 transitions. [2018-11-12 18:43:27,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-11-12 18:43:27,920 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:43:27,921 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 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] [2018-11-12 18:43:27,921 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:43:27,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:43:27,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1606978972, now seen corresponding path program 1 times [2018-11-12 18:43:27,921 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:43:27,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:43:27,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:43:27,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:43:27,923 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:43:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:43:28,512 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 249 proven. 35 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-11-12 18:43:28,512 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:43:28,512 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:43:28,513 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 342 with the following transitions: [2018-11-12 18:43:28,513 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], [213], [215], [218], [226], [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], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [574], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:43:28,516 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:43:28,516 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:43:28,612 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:43:29,371 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:43:29,371 INFO L272 AbstractInterpreter]: Visited 127 different actions 749 times. Merged at 8 different actions 46 times. Widened at 1 different actions 1 times. Performed 11876 root evaluator evaluations with a maximum evaluation depth of 6. Performed 11876 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 10 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-12 18:43:29,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:43:29,380 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:43:29,380 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:43:29,380 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 18:43:29,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:43:29,390 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:43:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:43:29,490 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:43:29,897 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-11-12 18:43:29,898 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:43:30,079 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2018-11-12 18:43:30,635 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-11-12 18:43:30,655 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:43:30,655 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-11-12 18:43:30,656 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:43:30,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 18:43:30,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 18:43:30,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-11-12 18:43:30,657 INFO L87 Difference]: Start difference. First operand 12415 states and 17682 transitions. Second operand 10 states. [2018-11-12 18:43:43,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:43:43,147 INFO L93 Difference]: Finished difference Result 43167 states and 70250 transitions. [2018-11-12 18:43:43,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-11-12 18:43:43,147 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 341 [2018-11-12 18:43:43,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:43:43,291 INFO L225 Difference]: With dead ends: 43167 [2018-11-12 18:43:43,291 INFO L226 Difference]: Without dead ends: 31975 [2018-11-12 18:43:43,373 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 703 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=293, Invalid=1429, Unknown=0, NotChecked=0, Total=1722 [2018-11-12 18:43:43,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31975 states. [2018-11-12 18:43:44,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31975 to 29069. [2018-11-12 18:43:44,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29069 states. [2018-11-12 18:43:44,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29069 states to 29069 states and 38978 transitions. [2018-11-12 18:43:44,253 INFO L78 Accepts]: Start accepts. Automaton has 29069 states and 38978 transitions. Word has length 341 [2018-11-12 18:43:44,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:43:44,253 INFO L480 AbstractCegarLoop]: Abstraction has 29069 states and 38978 transitions. [2018-11-12 18:43:44,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 18:43:44,254 INFO L276 IsEmpty]: Start isEmpty. Operand 29069 states and 38978 transitions. [2018-11-12 18:43:44,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-11-12 18:43:44,292 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:43:44,292 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-12 18:43:44,293 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:43:44,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:43:44,293 INFO L82 PathProgramCache]: Analyzing trace with hash -363239708, now seen corresponding path program 1 times [2018-11-12 18:43:44,293 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:43:44,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:43:44,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:43:44,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:43:44,294 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:43:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:43:44,674 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 106 proven. 238 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-12 18:43:44,674 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:43:44,674 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:43:44,674 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 347 with the following transitions: [2018-11-12 18:43:44,675 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], [213], [215], [218], [226], [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], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:43:44,677 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:43:44,677 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:43:44,742 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:43:45,839 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:43:45,839 INFO L272 AbstractInterpreter]: Visited 142 different actions 708 times. Merged at 8 different actions 43 times. Widened at 1 different actions 1 times. Performed 11237 root evaluator evaluations with a maximum evaluation depth of 6. Performed 11237 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 8 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-12 18:43:45,848 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:43:45,848 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:43:45,848 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:43:45,848 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 18:43:45,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:43:45,858 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:43:45,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:43:45,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:43:46,187 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 272 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-11-12 18:43:46,188 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:43:46,469 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2018-11-12 18:43:46,938 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 272 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-11-12 18:43:46,958 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:43:46,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2018-11-12 18:43:46,959 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:43:46,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 18:43:46,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 18:43:46,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-11-12 18:43:46,961 INFO L87 Difference]: Start difference. First operand 29069 states and 38978 transitions. Second operand 11 states. [2018-11-12 18:43:53,502 WARN L179 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2018-11-12 18:44:02,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:44:02,862 INFO L93 Difference]: Finished difference Result 86037 states and 131512 transitions. [2018-11-12 18:44:02,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-11-12 18:44:02,863 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 346 [2018-11-12 18:44:02,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:44:03,089 INFO L225 Difference]: With dead ends: 86037 [2018-11-12 18:44:03,090 INFO L226 Difference]: Without dead ends: 45775 [2018-11-12 18:44:03,300 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 859 GetRequests, 764 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3412 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1468, Invalid=7652, Unknown=0, NotChecked=0, Total=9120 [2018-11-12 18:44:03,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45775 states. [2018-11-12 18:44:04,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45775 to 42742. [2018-11-12 18:44:04,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42742 states. [2018-11-12 18:44:04,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42742 states to 42742 states and 61499 transitions. [2018-11-12 18:44:04,681 INFO L78 Accepts]: Start accepts. Automaton has 42742 states and 61499 transitions. Word has length 346 [2018-11-12 18:44:04,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:44:04,683 INFO L480 AbstractCegarLoop]: Abstraction has 42742 states and 61499 transitions. [2018-11-12 18:44:04,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 18:44:04,683 INFO L276 IsEmpty]: Start isEmpty. Operand 42742 states and 61499 transitions. [2018-11-12 18:44:04,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-11-12 18:44:04,714 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:44:04,714 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:44:04,715 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:44:04,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:44:04,715 INFO L82 PathProgramCache]: Analyzing trace with hash -488047406, now seen corresponding path program 1 times [2018-11-12 18:44:04,715 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:44:04,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:44:04,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:44:04,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:44:04,717 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:44:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:44:06,683 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-11-12 18:44:06,684 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:44:06,684 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:44:06,684 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 348 with the following transitions: [2018-11-12 18:44:06,684 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], [213], [215], [218], [226], [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], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [971], [975], [979], [983], [987], [991], [994], [999], [1001], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:44:06,687 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:44:06,687 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:44:06,835 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:44:07,705 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:44:07,706 INFO L272 AbstractInterpreter]: Visited 187 different actions 740 times. Merged at 7 different actions 28 times. Never widened. Performed 14137 root evaluator evaluations with a maximum evaluation depth of 6. Performed 14137 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-12 18:44:07,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:44:07,713 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:44:07,713 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:44:07,713 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 18:44:07,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:44:07,722 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:44:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:44:07,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:44:11,372 WARN L179 SmtUtils]: Spent 2.31 s on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2018-11-12 18:44:11,502 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 11 proven. 60 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-11-12 18:44:11,502 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:44:11,983 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:12,311 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:12,368 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:12,413 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:12,450 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:12,486 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:12,545 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:12,611 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:12,648 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:12,761 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:13,090 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:13,424 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:13,758 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:14,092 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:14,423 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:14,499 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:14,544 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:14,781 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:14,910 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:14,997 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:15,081 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:15,122 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:15,159 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:15,195 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:15,233 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:15,271 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:15,590 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:15,926 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:16,000 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:16,036 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:16,073 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:16,141 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:16,183 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:16,232 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:16,269 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:16,307 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:16,345 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:16,383 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:16,434 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:16,473 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:16,509 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:16,546 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:16,876 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:17,036 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:17,071 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:17,126 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:17,162 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:17,202 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:17,236 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:17,274 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:17,311 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:17,451 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:17,489 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:17,571 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:17,610 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:17,654 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:17,689 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:17,744 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:17,782 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:17,825 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:17,960 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:18,244 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:18,282 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:18,318 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:18,354 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:18,401 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:18,443 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:18,479 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:18,515 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:18,550 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:18,589 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:18,627 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:18,665 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:18,699 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:18,733 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:18,769 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:18,803 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:18,840 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:18,875 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:18,911 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:18,984 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:19,022 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:19,058 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:19,093 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:19,154 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:19,189 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:19,225 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:19,258 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:19,294 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:19,332 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:19,367 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:19,404 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:19,439 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:19,475 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:19,510 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:19,547 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:19,585 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:19,621 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:19,657 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:19,693 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:19,732 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:19,768 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:19,806 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:19,843 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:20,165 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:20,479 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:20,518 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:20,580 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:20,616 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:20,935 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:20,983 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:21,159 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:21,484 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:21,647 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:21,683 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:21,720 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:21,775 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:21,828 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:21,863 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:21,913 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:21,977 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:22,101 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:22,342 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:22,389 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:22,424 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:22,460 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:22,498 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:22,534 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:22,570 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:22,605 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:22,701 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:22,736 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:22,772 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:22,809 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:22,843 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:22,882 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:22,915 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:22,951 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:23,008 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:23,042 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:23,077 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:23,116 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:23,154 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:23,188 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:23,223 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:23,258 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:23,292 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:23,329 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:23,363 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:23,397 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:23,434 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:23,473 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:23,506 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:23,542 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:23,578 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:23,620 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:23,655 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:23,733 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:23,770 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:23,807 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:23,846 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:23,881 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:23,920 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:23,958 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:23,994 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:24,033 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:24,070 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:44:25,839 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 67 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:44:25,860 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:44:25,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2018-11-12 18:44:25,860 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:44:25,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 18:44:25,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 18:44:25,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2018-11-12 18:44:25,862 INFO L87 Difference]: Start difference. First operand 42742 states and 61499 transitions. Second operand 16 states. [2018-11-12 18:44:29,236 WARN L179 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 35 Received shutdown request... [2018-11-12 18:44:38,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-11-12 18:44:38,703 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 18:44:38,713 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 18:44:38,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 06:44:38 BoogieIcfgContainer [2018-11-12 18:44:38,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 18:44:38,715 INFO L168 Benchmark]: Toolchain (without parser) took 212690.75 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-12 18:44:38,721 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 18:44:38,721 INFO L168 Benchmark]: CACSL2BoogieTranslator took 860.35 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-11-12 18:44:38,722 INFO L168 Benchmark]: Boogie Procedure Inliner took 168.89 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -866.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2018-11-12 18:44:38,723 INFO L168 Benchmark]: Boogie Preprocessor took 132.70 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 18:44:38,723 INFO L168 Benchmark]: RCFGBuilder took 4722.89 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 171.8 MB). Peak memory consumption was 171.8 MB. Max. memory is 7.1 GB. [2018-11-12 18:44:38,724 INFO L168 Benchmark]: TraceAbstraction took 206799.55 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -410.2 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-12 18:44:38,728 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 860.35 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 168.89 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -866.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.70 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4722.89 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 171.8 MB). Peak memory consumption was 171.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206799.55 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -410.2 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 102). Cancelled while BasicCegarLoop was constructing difference of abstraction (42742states) and FLOYD_HOARE automaton (currently 38 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (19400 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 206.7s OverallTime, 14 OverallIterations, 4 TraceHistogramMax, 155.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3994 SDtfs, 22692 SDslu, 5987 SDs, 0 SdLazy, 47967 SolverSat, 6859 SolverUnsat, 24 SolverUnknown, 0 SolverNotchecked, 78.0s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 4836 GetRequests, 4255 SyntacticMatches, 186 SemanticMatches, 395 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8430 ImplicationChecksByTransitivity, 32.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42742occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.4s AbstIntTime, 10 AbstIntIterations, 5 AbstIntStrong, 0.9977322377769902 AbsIntWeakeningRatio, 0.10903173311635476 AbsIntAvgWeakeningVarsNumRemoved, 19.861676159479252 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 7882 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 31.7s InterpolantComputationTime, 4937 NumberOfCodeBlocks, 4937 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 6501 ConstructedInterpolants, 321 QuantifiedInterpolants, 17119844 SizeOfPredicates, 13 NumberOfNonLiveVariables, 2712 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 24 InterpolantComputations, 6 PerfectInterpolantSequences, 3421/4656 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown