java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label08_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:24:47,118 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:24:47,120 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:24:47,135 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:24:47,136 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:24:47,137 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:24:47,141 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:24:47,144 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:24:47,152 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:24:47,153 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:24:47,157 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:24:47,157 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:24:47,158 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:24:47,162 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:24:47,163 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:24:47,166 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:24:47,167 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:24:47,171 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:24:47,173 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:24:47,175 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:24:47,179 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:24:47,181 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:24:47,185 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 22:24:47,188 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 22:24:47,188 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 22:24:47,189 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 22:24:47,191 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 22:24:47,191 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 22:24:47,193 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 22:24:47,195 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 22:24:47,195 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 22:24:47,196 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-23 22:24:47,196 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 22:24:47,197 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 22:24:47,199 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 22:24:47,200 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 22:24:47,201 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 22:24:47,231 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:24:47,231 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:24:47,232 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:24:47,232 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:24:47,232 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:24:47,232 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:24:47,232 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:24:47,236 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:24:47,237 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:24:47,237 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:24:47,237 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:24:47,237 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:24:47,238 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:24:47,238 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:24:47,238 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:24:47,239 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:24:47,239 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:24:47,239 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:24:47,239 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:24:47,239 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:24:47,240 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:24:47,240 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:24:47,240 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:24:47,240 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:24:47,240 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:24:47,240 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:24:47,241 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:24:47,241 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:24:47,241 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:24:47,241 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:24:47,241 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:24:47,242 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:24:47,242 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:24:47,242 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:24:47,297 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:24:47,310 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:24:47,314 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:24:47,315 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:24:47,315 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:24:47,316 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label08_false-unreach-call_false-termination.c [2018-10-23 22:24:47,377 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f5467d5fa/54e8848467a04c40b7a4763770e2825b/FLAGb6e43b826 [2018-10-23 22:24:48,008 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:24:48,009 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label08_false-unreach-call_false-termination.c [2018-10-23 22:24:48,029 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f5467d5fa/54e8848467a04c40b7a4763770e2825b/FLAGb6e43b826 [2018-10-23 22:24:48,051 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f5467d5fa/54e8848467a04c40b7a4763770e2825b [2018-10-23 22:24:48,064 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:24:48,066 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:24:48,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:24:48,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:24:48,072 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:24:48,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:24:48" (1/1) ... [2018-10-23 22:24:48,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7adbd51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:24:48, skipping insertion in model container [2018-10-23 22:24:48,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:24:48" (1/1) ... [2018-10-23 22:24:48,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:24:48,166 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:24:48,734 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:24:48,739 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:24:48,896 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:24:48,918 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:24:48,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:24:48 WrapperNode [2018-10-23 22:24:48,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:24:48,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:24:48,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:24:48,921 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:24:48,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:24:48" (1/1) ... [2018-10-23 22:24:48,974 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:24:48" (1/1) ... [2018-10-23 22:24:49,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:24:49,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:24:49,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:24:49,172 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:24:49,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:24:48" (1/1) ... [2018-10-23 22:24:49,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:24:48" (1/1) ... [2018-10-23 22:24:49,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:24:48" (1/1) ... [2018-10-23 22:24:49,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:24:48" (1/1) ... [2018-10-23 22:24:49,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:24:48" (1/1) ... [2018-10-23 22:24:49,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:24:48" (1/1) ... [2018-10-23 22:24:49,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:24:48" (1/1) ... [2018-10-23 22:24:49,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:24:49,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:24:49,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:24:49,271 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:24:49,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:24:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:24:49,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:24:49,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:24:49,366 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:24:49,366 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:24:49,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:24:49,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:24:49,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:24:49,368 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:24:53,042 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:24:53,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:24:53 BoogieIcfgContainer [2018-10-23 22:24:53,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:24:53,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:24:53,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:24:53,049 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:24:53,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:24:48" (1/3) ... [2018-10-23 22:24:53,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313cd2f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:24:53, skipping insertion in model container [2018-10-23 22:24:53,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:24:48" (2/3) ... [2018-10-23 22:24:53,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313cd2f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:24:53, skipping insertion in model container [2018-10-23 22:24:53,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:24:53" (3/3) ... [2018-10-23 22:24:53,054 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label08_false-unreach-call_false-termination.c [2018-10-23 22:24:53,065 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:24:53,075 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:24:53,094 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:24:53,136 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:24:53,137 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:24:53,137 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:24:53,137 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:24:53,137 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:24:53,137 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:24:53,137 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:24:53,138 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:24:53,167 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-23 22:24:53,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-23 22:24:53,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:24:53,176 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:24:53,180 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:24:53,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:24:53,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1967865695, now seen corresponding path program 1 times [2018-10-23 22:24:53,191 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:24:53,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:24:53,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:24:53,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:24:53,258 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:24:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:24:53,620 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:24:53,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:24:53,728 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:24:53,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:24:53,729 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:24:53,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:24:53,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:24:53,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:24:53,754 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-23 22:24:55,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:24:55,784 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-23 22:24:55,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:24:55,791 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-10-23 22:24:55,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:24:55,812 INFO L225 Difference]: With dead ends: 691 [2018-10-23 22:24:55,813 INFO L226 Difference]: Without dead ends: 434 [2018-10-23 22:24:55,821 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:24:55,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-23 22:24:55,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-23 22:24:55,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-23 22:24:55,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-23 22:24:55,921 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 19 [2018-10-23 22:24:55,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:24:55,921 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-23 22:24:55,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:24:55,922 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-23 22:24:55,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-23 22:24:55,927 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:24:55,927 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:24:55,928 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:24:55,928 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:24:55,928 INFO L82 PathProgramCache]: Analyzing trace with hash 996215900, now seen corresponding path program 1 times [2018-10-23 22:24:55,929 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:24:55,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:24:55,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:24:55,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:24:55,931 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:24:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:24:56,297 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:24:56,297 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:24:56,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:24:56,298 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:24:56,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:24:56,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:24:56,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:24:56,301 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-23 22:25:00,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:25:00,195 INFO L93 Difference]: Finished difference Result 1588 states and 2935 transitions. [2018-10-23 22:25:00,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:25:00,197 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2018-10-23 22:25:00,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:25:00,213 INFO L225 Difference]: With dead ends: 1588 [2018-10-23 22:25:00,213 INFO L226 Difference]: Without dead ends: 1160 [2018-10-23 22:25:00,222 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:25:00,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2018-10-23 22:25:00,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1153. [2018-10-23 22:25:00,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2018-10-23 22:25:00,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1887 transitions. [2018-10-23 22:25:00,388 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1887 transitions. Word has length 89 [2018-10-23 22:25:00,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:25:00,389 INFO L481 AbstractCegarLoop]: Abstraction has 1153 states and 1887 transitions. [2018-10-23 22:25:00,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:25:00,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1887 transitions. [2018-10-23 22:25:00,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-23 22:25:00,397 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:25:00,398 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:25:00,398 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:25:00,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:25:00,398 INFO L82 PathProgramCache]: Analyzing trace with hash 443394711, now seen corresponding path program 1 times [2018-10-23 22:25:00,399 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:25:00,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:00,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:25:00,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:00,400 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:25:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:25:00,691 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:25:00,866 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:25:00,866 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:25:00,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:25:00,866 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:25:00,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:25:00,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:25:00,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:25:00,868 INFO L87 Difference]: Start difference. First operand 1153 states and 1887 transitions. Second operand 5 states. [2018-10-23 22:25:04,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:25:04,068 INFO L93 Difference]: Finished difference Result 2716 states and 4601 transitions. [2018-10-23 22:25:04,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:25:04,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2018-10-23 22:25:04,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:25:04,094 INFO L225 Difference]: With dead ends: 2716 [2018-10-23 22:25:04,098 INFO L226 Difference]: Without dead ends: 1569 [2018-10-23 22:25:04,106 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:25:04,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2018-10-23 22:25:04,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1538. [2018-10-23 22:25:04,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1538 states. [2018-10-23 22:25:04,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2356 transitions. [2018-10-23 22:25:04,179 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2356 transitions. Word has length 90 [2018-10-23 22:25:04,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:25:04,180 INFO L481 AbstractCegarLoop]: Abstraction has 1538 states and 2356 transitions. [2018-10-23 22:25:04,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:25:04,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2356 transitions. [2018-10-23 22:25:04,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-23 22:25:04,182 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:25:04,185 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:25:04,186 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:25:04,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:25:04,186 INFO L82 PathProgramCache]: Analyzing trace with hash 48842683, now seen corresponding path program 1 times [2018-10-23 22:25:04,187 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:25:04,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:04,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:25:04,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:04,188 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:25:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:25:04,423 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:25:04,423 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:25:04,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:25:04,424 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:25:04,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:25:04,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:25:04,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:25:04,425 INFO L87 Difference]: Start difference. First operand 1538 states and 2356 transitions. Second operand 5 states. [2018-10-23 22:25:07,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:25:07,474 INFO L93 Difference]: Finished difference Result 4906 states and 7504 transitions. [2018-10-23 22:25:07,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 22:25:07,474 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2018-10-23 22:25:07,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:25:07,499 INFO L225 Difference]: With dead ends: 4906 [2018-10-23 22:25:07,499 INFO L226 Difference]: Without dead ends: 3374 [2018-10-23 22:25:07,513 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:25:07,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3374 states. [2018-10-23 22:25:07,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3374 to 3263. [2018-10-23 22:25:07,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3263 states. [2018-10-23 22:25:07,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3263 states to 3263 states and 4437 transitions. [2018-10-23 22:25:07,636 INFO L78 Accepts]: Start accepts. Automaton has 3263 states and 4437 transitions. Word has length 92 [2018-10-23 22:25:07,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:25:07,637 INFO L481 AbstractCegarLoop]: Abstraction has 3263 states and 4437 transitions. [2018-10-23 22:25:07,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:25:07,637 INFO L276 IsEmpty]: Start isEmpty. Operand 3263 states and 4437 transitions. [2018-10-23 22:25:07,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-23 22:25:07,650 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:25:07,651 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:25:07,654 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:25:07,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:25:07,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1675787813, now seen corresponding path program 1 times [2018-10-23 22:25:07,655 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:25:07,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:07,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:25:07,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:07,656 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:25:07,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:25:07,893 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-23 22:25:07,893 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:25:07,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:25:07,894 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:25:07,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:25:07,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:25:07,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:25:07,895 INFO L87 Difference]: Start difference. First operand 3263 states and 4437 transitions. Second operand 4 states. [2018-10-23 22:25:11,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:25:11,411 INFO L93 Difference]: Finished difference Result 8796 states and 12469 transitions. [2018-10-23 22:25:11,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:25:11,412 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2018-10-23 22:25:11,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:25:11,445 INFO L225 Difference]: With dead ends: 8796 [2018-10-23 22:25:11,445 INFO L226 Difference]: Without dead ends: 5539 [2018-10-23 22:25:11,469 INFO L605 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 [2018-10-23 22:25:11,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5539 states. [2018-10-23 22:25:11,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5539 to 5539. [2018-10-23 22:25:11,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5539 states. [2018-10-23 22:25:11,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5539 states to 5539 states and 7494 transitions. [2018-10-23 22:25:11,622 INFO L78 Accepts]: Start accepts. Automaton has 5539 states and 7494 transitions. Word has length 177 [2018-10-23 22:25:11,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:25:11,623 INFO L481 AbstractCegarLoop]: Abstraction has 5539 states and 7494 transitions. [2018-10-23 22:25:11,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:25:11,623 INFO L276 IsEmpty]: Start isEmpty. Operand 5539 states and 7494 transitions. [2018-10-23 22:25:11,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-10-23 22:25:11,634 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:25:11,635 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:25:11,635 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:25:11,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:25:11,636 INFO L82 PathProgramCache]: Analyzing trace with hash -2080310447, now seen corresponding path program 1 times [2018-10-23 22:25:11,636 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:25:11,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:11,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:25:11,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:11,637 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:25:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:25:11,824 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-10-23 22:25:11,824 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:25:11,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:25:11,824 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:25:11,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:25:11,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:25:11,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:25:11,825 INFO L87 Difference]: Start difference. First operand 5539 states and 7494 transitions. Second operand 3 states. [2018-10-23 22:25:14,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:25:14,820 INFO L93 Difference]: Finished difference Result 12598 states and 17780 transitions. [2018-10-23 22:25:14,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:25:14,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2018-10-23 22:25:14,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:25:14,862 INFO L225 Difference]: With dead ends: 12598 [2018-10-23 22:25:14,863 INFO L226 Difference]: Without dead ends: 7065 [2018-10-23 22:25:14,896 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:25:14,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7065 states. [2018-10-23 22:25:15,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7065 to 7060. [2018-10-23 22:25:15,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7060 states. [2018-10-23 22:25:15,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7060 states to 7060 states and 9592 transitions. [2018-10-23 22:25:15,113 INFO L78 Accepts]: Start accepts. Automaton has 7060 states and 9592 transitions. Word has length 237 [2018-10-23 22:25:15,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:25:15,114 INFO L481 AbstractCegarLoop]: Abstraction has 7060 states and 9592 transitions. [2018-10-23 22:25:15,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:25:15,114 INFO L276 IsEmpty]: Start isEmpty. Operand 7060 states and 9592 transitions. [2018-10-23 22:25:15,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-23 22:25:15,135 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:25:15,135 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-23 22:25:15,136 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:25:15,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:25:15,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1716679298, now seen corresponding path program 1 times [2018-10-23 22:25:15,136 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:25:15,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:15,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:25:15,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:15,141 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:25:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:25:15,526 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-23 22:25:15,791 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-10-23 22:25:16,077 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 18 [2018-10-23 22:25:16,808 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:25:16,808 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:25:16,808 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:25:16,810 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 263 with the following transitions: [2018-10-23 22:25:16,812 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [53], [55], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [734], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-23 22:25:16,886 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:25:16,887 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:25:19,893 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:25:21,880 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:25:21,882 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-23 22:25:21,926 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:25:21,927 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:25:24,818 INFO L232 lantSequenceWeakener]: Weakened 254 states. On average, predicates are now at 77.37% of their original sizes. [2018-10-23 22:25:24,818 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:25:25,222 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:25:25,223 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:25:25,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2018-10-23 22:25:25,223 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:25:25,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 22:25:25,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 22:25:25,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 22:25:25,225 INFO L87 Difference]: Start difference. First operand 7060 states and 9592 transitions. Second operand 7 states. [2018-10-23 22:25:39,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:25:39,298 INFO L93 Difference]: Finished difference Result 14299 states and 19408 transitions. [2018-10-23 22:25:39,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:25:39,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 262 [2018-10-23 22:25:39,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:25:39,334 INFO L225 Difference]: With dead ends: 14299 [2018-10-23 22:25:39,334 INFO L226 Difference]: Without dead ends: 7245 [2018-10-23 22:25:39,358 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 262 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:25:39,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7245 states. [2018-10-23 22:25:39,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7245 to 7243. [2018-10-23 22:25:39,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7243 states. [2018-10-23 22:25:39,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7243 states to 7243 states and 9783 transitions. [2018-10-23 22:25:39,559 INFO L78 Accepts]: Start accepts. Automaton has 7243 states and 9783 transitions. Word has length 262 [2018-10-23 22:25:39,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:25:39,559 INFO L481 AbstractCegarLoop]: Abstraction has 7243 states and 9783 transitions. [2018-10-23 22:25:39,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 22:25:39,559 INFO L276 IsEmpty]: Start isEmpty. Operand 7243 states and 9783 transitions. [2018-10-23 22:25:39,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-10-23 22:25:39,580 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:25:39,581 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:25:39,581 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:25:39,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:25:39,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1519194548, now seen corresponding path program 1 times [2018-10-23 22:25:39,582 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:25:39,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:39,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:25:39,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:39,583 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:25:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:25:40,134 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 22:25:40,342 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-23 22:25:40,693 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-10-23 22:25:41,209 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 124 proven. 190 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 22:25:41,209 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:25:41,209 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:25:41,210 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 348 with the following transitions: [2018-10-23 22:25:41,210 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [53], [55], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [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], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [734], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-23 22:25:41,217 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:25:41,218 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:25:43,696 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:25:48,139 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:25:48,140 INFO L272 AbstractInterpreter]: Visited 139 different actions 271 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-23 22:25:48,150 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:25:48,150 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:25:51,636 INFO L232 lantSequenceWeakener]: Weakened 173 states. On average, predicates are now at 77.65% of their original sizes. [2018-10-23 22:25:51,636 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:26:15,275 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:26:15,275 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:26:15,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [12] total 34 [2018-10-23 22:26:15,276 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:26:15,276 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-23 22:26:15,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-23 22:26:15,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2018-10-23 22:26:15,277 INFO L87 Difference]: Start difference. First operand 7243 states and 9783 transitions. Second operand 24 states. Received shutdown request... [2018-10-23 22:28:48,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-23 22:28:48,311 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:28:48,317 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:28:48,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:28:48 BoogieIcfgContainer [2018-10-23 22:28:48,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:28:48,318 INFO L168 Benchmark]: Toolchain (without parser) took 240253.20 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -660.7 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-23 22:28:48,320 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-23 22:28:48,320 INFO L168 Benchmark]: CACSL2BoogieTranslator took 852.13 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-23 22:28:48,321 INFO L168 Benchmark]: Boogie Procedure Inliner took 251.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -844.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2018-10-23 22:28:48,322 INFO L168 Benchmark]: Boogie Preprocessor took 97.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2018-10-23 22:28:48,323 INFO L168 Benchmark]: RCFGBuilder took 3772.85 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: 129.3 MB). Peak memory consumption was 129.3 MB. Max. memory is 7.1 GB. [2018-10-23 22:28:48,326 INFO L168 Benchmark]: TraceAbstraction took 235273.14 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -1.3 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-23 22:28:48,336 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 852.13 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 251.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -844.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3772.85 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: 129.3 MB). Peak memory consumption was 129.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235273.14 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -1.3 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 40]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 40). Cancelled while BasicCegarLoop was constructing difference of abstraction (7243states) and FLOYD_HOARE automaton (currently 21 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (11339 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 235.1s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 186.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1347 SDtfs, 5958 SDslu, 846 SDs, 0 SdLazy, 9748 SolverSat, 1705 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 78.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 664 GetRequests, 575 SyntacticMatches, 25 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 29.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7243occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.0s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.995973903493064 AbsIntWeakeningRatio, 0.09555189456342669 AbsIntAvgWeakeningVarsNumRemoved, 648.7034596375618 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 156 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 1313 NumberOfCodeBlocks, 1313 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1305 ConstructedInterpolants, 0 QuantifiedInterpolants, 3335457 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 527/719 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown