java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label25_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 11:54:34,120 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 11:54:34,126 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 11:54:34,141 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 11:54:34,141 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 11:54:34,142 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 11:54:34,143 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 11:54:34,147 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 11:54:34,149 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 11:54:34,149 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 11:54:34,150 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 11:54:34,151 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 11:54:34,152 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 11:54:34,153 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 11:54:34,154 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 11:54:34,155 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 11:54:34,156 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 11:54:34,158 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 11:54:34,163 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 11:54:34,165 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 11:54:34,166 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 11:54:34,167 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 11:54:34,170 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 11:54:34,174 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 11:54:34,174 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 11:54:34,176 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 11:54:34,177 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 11:54:34,179 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 11:54:34,180 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 11:54:34,181 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 11:54:34,181 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 11:54:34,185 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 11:54:34,185 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 11:54:34,185 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 11:54:34,186 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 11:54:34,189 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 11:54:34,189 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 11:54:34,219 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 11:54:34,219 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 11:54:34,220 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 11:54:34,220 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 11:54:34,221 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 11:54:34,221 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 11:54:34,221 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 11:54:34,221 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 11:54:34,221 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 11:54:34,222 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 11:54:34,222 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 11:54:34,222 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 11:54:34,223 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 11:54:34,223 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 11:54:34,223 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 11:54:34,223 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 11:54:34,223 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 11:54:34,225 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 11:54:34,225 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 11:54:34,225 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 11:54:34,225 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 11:54:34,226 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 11:54:34,226 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 11:54:34,226 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 11:54:34,226 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 11:54:34,227 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 11:54:34,227 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 11:54:34,227 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 11:54:34,228 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 11:54:34,228 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 11:54:34,228 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 11:54:34,228 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 11:54:34,228 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 11:54:34,229 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 11:54:34,298 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 11:54:34,318 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 11:54:34,321 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 11:54:34,323 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 11:54:34,323 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 11:54:34,324 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label25_false-unreach-call.c [2018-11-07 11:54:34,390 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96d876c34/2ae9e449b90a41d9bca61904cca6003c/FLAG173742517 [2018-11-07 11:54:35,220 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 11:54:35,221 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label25_false-unreach-call.c [2018-11-07 11:54:35,252 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96d876c34/2ae9e449b90a41d9bca61904cca6003c/FLAG173742517 [2018-11-07 11:54:35,269 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96d876c34/2ae9e449b90a41d9bca61904cca6003c [2018-11-07 11:54:35,280 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 11:54:35,282 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 11:54:35,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 11:54:35,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 11:54:35,288 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 11:54:35,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:54:35" (1/1) ... [2018-11-07 11:54:35,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa20d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:54:35, skipping insertion in model container [2018-11-07 11:54:35,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:54:35" (1/1) ... [2018-11-07 11:54:35,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 11:54:35,477 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 11:54:36,972 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 11:54:36,979 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 11:54:37,756 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 11:54:37,793 INFO L193 MainTranslator]: Completed translation [2018-11-07 11:54:37,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:54:37 WrapperNode [2018-11-07 11:54:37,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 11:54:37,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 11:54:37,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 11:54:37,796 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 11:54:37,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:54:37" (1/1) ... [2018-11-07 11:54:38,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:54:37" (1/1) ... [2018-11-07 11:54:38,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 11:54:38,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 11:54:38,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 11:54:38,172 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 11:54:38,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:54:37" (1/1) ... [2018-11-07 11:54:38,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:54:37" (1/1) ... [2018-11-07 11:54:38,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:54:37" (1/1) ... [2018-11-07 11:54:38,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:54:37" (1/1) ... [2018-11-07 11:54:38,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:54:37" (1/1) ... [2018-11-07 11:54:38,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:54:37" (1/1) ... [2018-11-07 11:54:38,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:54:37" (1/1) ... [2018-11-07 11:54:38,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 11:54:38,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 11:54:38,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 11:54:38,465 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 11:54:38,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:54:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 11:54:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 11:54:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 11:54:38,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 11:54:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 11:54:38,545 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 11:54:38,545 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 11:54:38,546 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 11:54:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 11:54:38,546 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 11:54:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 11:54:38,546 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 11:54:38,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 11:54:38,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 11:54:38,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 11:54:38,550 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 11:54:50,402 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 11:54:50,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:54:50 BoogieIcfgContainer [2018-11-07 11:54:50,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 11:54:50,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 11:54:50,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 11:54:50,408 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 11:54:50,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:54:35" (1/3) ... [2018-11-07 11:54:50,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ff5bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:54:50, skipping insertion in model container [2018-11-07 11:54:50,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:54:37" (2/3) ... [2018-11-07 11:54:50,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ff5bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:54:50, skipping insertion in model container [2018-11-07 11:54:50,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:54:50" (3/3) ... [2018-11-07 11:54:50,411 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label25_false-unreach-call.c [2018-11-07 11:54:50,422 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 11:54:50,433 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 11:54:50,452 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 11:54:50,502 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 11:54:50,503 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 11:54:50,503 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 11:54:50,503 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 11:54:50,503 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 11:54:50,503 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 11:54:50,504 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 11:54:50,504 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 11:54:50,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 11:54:50,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-07 11:54:50,557 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:54:50,558 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] [2018-11-07 11:54:50,561 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:54:50,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:54:50,568 INFO L82 PathProgramCache]: Analyzing trace with hash 413005764, now seen corresponding path program 1 times [2018-11-07 11:54:50,571 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:54:50,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:54:50,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:54:50,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:54:50,632 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:54:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:54:51,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:54:51,026 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:54:51,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 11:54:51,026 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:54:51,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 11:54:51,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 11:54:51,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 11:54:51,054 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-11-07 11:55:03,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:55:03,635 INFO L93 Difference]: Finished difference Result 4063 states and 7611 transitions. [2018-11-07 11:55:03,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 11:55:03,637 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-07 11:55:03,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:55:03,686 INFO L225 Difference]: With dead ends: 4063 [2018-11-07 11:55:03,686 INFO L226 Difference]: Without dead ends: 2937 [2018-11-07 11:55:03,699 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 11:55:03,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2018-11-07 11:55:03,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1982. [2018-11-07 11:55:03,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1982 states. [2018-11-07 11:55:03,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 3456 transitions. [2018-11-07 11:55:03,909 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 3456 transitions. Word has length 30 [2018-11-07 11:55:03,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:55:03,910 INFO L480 AbstractCegarLoop]: Abstraction has 1982 states and 3456 transitions. [2018-11-07 11:55:03,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 11:55:03,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 3456 transitions. [2018-11-07 11:55:03,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-11-07 11:55:03,920 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:55:03,923 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 11:55:03,924 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:55:03,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:55:03,924 INFO L82 PathProgramCache]: Analyzing trace with hash -749391575, now seen corresponding path program 1 times [2018-11-07 11:55:03,924 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:55:03,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:55:03,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:55:03,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:55:03,926 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:55:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:55:04,332 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:55:04,333 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:55:04,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 11:55:04,333 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:55:04,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 11:55:04,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 11:55:04,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 11:55:04,336 INFO L87 Difference]: Start difference. First operand 1982 states and 3456 transitions. Second operand 6 states. [2018-11-07 11:55:19,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:55:19,666 INFO L93 Difference]: Finished difference Result 7277 states and 13063 transitions. [2018-11-07 11:55:19,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 11:55:19,668 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2018-11-07 11:55:19,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:55:19,705 INFO L225 Difference]: With dead ends: 7277 [2018-11-07 11:55:19,706 INFO L226 Difference]: Without dead ends: 5301 [2018-11-07 11:55:19,718 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 11:55:19,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2018-11-07 11:55:19,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 5252. [2018-11-07 11:55:19,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5252 states. [2018-11-07 11:55:19,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 8253 transitions. [2018-11-07 11:55:19,882 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 8253 transitions. Word has length 101 [2018-11-07 11:55:19,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:55:19,883 INFO L480 AbstractCegarLoop]: Abstraction has 5252 states and 8253 transitions. [2018-11-07 11:55:19,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 11:55:19,883 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 8253 transitions. [2018-11-07 11:55:19,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-11-07 11:55:19,886 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:55:19,890 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 11:55:19,890 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:55:19,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:55:19,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1848560104, now seen corresponding path program 1 times [2018-11-07 11:55:19,891 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:55:19,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:55:19,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:55:19,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:55:19,893 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:55:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:55:20,136 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:55:20,136 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:55:20,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 11:55:20,137 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:55:20,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 11:55:20,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 11:55:20,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 11:55:20,138 INFO L87 Difference]: Start difference. First operand 5252 states and 8253 transitions. Second operand 6 states. [2018-11-07 11:55:31,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:55:31,287 INFO L93 Difference]: Finished difference Result 13914 states and 22498 transitions. [2018-11-07 11:55:31,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 11:55:31,289 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2018-11-07 11:55:31,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:55:31,331 INFO L225 Difference]: With dead ends: 13914 [2018-11-07 11:55:31,331 INFO L226 Difference]: Without dead ends: 8668 [2018-11-07 11:55:31,354 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 11:55:31,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8668 states. [2018-11-07 11:55:31,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8668 to 8605. [2018-11-07 11:55:31,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8605 states. [2018-11-07 11:55:31,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8605 states to 8605 states and 12803 transitions. [2018-11-07 11:55:31,575 INFO L78 Accepts]: Start accepts. Automaton has 8605 states and 12803 transitions. Word has length 104 [2018-11-07 11:55:31,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:55:31,576 INFO L480 AbstractCegarLoop]: Abstraction has 8605 states and 12803 transitions. [2018-11-07 11:55:31,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 11:55:31,576 INFO L276 IsEmpty]: Start isEmpty. Operand 8605 states and 12803 transitions. [2018-11-07 11:55:31,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-07 11:55:31,579 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:55:31,579 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 11:55:31,580 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:55:31,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:55:31,580 INFO L82 PathProgramCache]: Analyzing trace with hash -207674108, now seen corresponding path program 1 times [2018-11-07 11:55:31,580 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:55:31,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:55:31,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:55:31,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:55:31,582 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:55:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:55:31,911 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:55:31,911 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:55:31,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 11:55:31,912 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:55:31,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 11:55:31,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 11:55:31,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 11:55:31,914 INFO L87 Difference]: Start difference. First operand 8605 states and 12803 transitions. Second operand 5 states. [2018-11-07 11:55:41,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:55:41,553 INFO L93 Difference]: Finished difference Result 25972 states and 40309 transitions. [2018-11-07 11:55:41,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 11:55:41,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-11-07 11:55:41,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:55:41,645 INFO L225 Difference]: With dead ends: 25972 [2018-11-07 11:55:41,645 INFO L226 Difference]: Without dead ends: 17373 [2018-11-07 11:55:41,682 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 11:55:41,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17373 states. [2018-11-07 11:55:42,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17373 to 17110. [2018-11-07 11:55:42,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17110 states. [2018-11-07 11:55:42,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17110 states to 17110 states and 24305 transitions. [2018-11-07 11:55:42,191 INFO L78 Accepts]: Start accepts. Automaton has 17110 states and 24305 transitions. Word has length 114 [2018-11-07 11:55:42,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:55:42,192 INFO L480 AbstractCegarLoop]: Abstraction has 17110 states and 24305 transitions. [2018-11-07 11:55:42,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 11:55:42,192 INFO L276 IsEmpty]: Start isEmpty. Operand 17110 states and 24305 transitions. [2018-11-07 11:55:42,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-07 11:55:42,195 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:55:42,196 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 11:55:42,196 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:55:42,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:55:42,196 INFO L82 PathProgramCache]: Analyzing trace with hash 158864184, now seen corresponding path program 1 times [2018-11-07 11:55:42,196 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:55:42,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:55:42,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:55:42,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:55:42,198 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:55:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:55:42,566 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 11:55:42,566 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 11:55:42,567 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 11:55:42,568 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 132 with the following transitions: [2018-11-07 11:55:42,571 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2767], [2769], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 11:55:42,621 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 11:55:42,622 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 11:55:44,137 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 11:55:44,139 INFO L272 AbstractInterpreter]: Visited 108 different actions 311 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 11:55:44,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:55:44,186 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 11:55:44,820 INFO L227 lantSequenceWeakener]: Weakened 78 states. On average, predicates are now at 71.93% of their original sizes. [2018-11-07 11:55:44,821 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 11:55:46,046 INFO L415 sIntCurrentIteration]: We unified 130 AI predicates to 130 [2018-11-07 11:55:46,046 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 11:55:46,048 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 11:55:46,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [5] total 20 [2018-11-07 11:55:46,048 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:55:46,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 11:55:46,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 11:55:46,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-11-07 11:55:46,050 INFO L87 Difference]: Start difference. First operand 17110 states and 24305 transitions. Second operand 17 states. [2018-11-07 11:55:56,875 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown