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/Problem11_label10_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:24:35,001 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:24:35,003 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:24:35,017 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:24:35,017 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:24:35,018 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:24:35,020 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:24:35,021 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:24:35,023 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:24:35,024 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:24:35,025 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:24:35,025 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:24:35,026 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:24:35,027 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:24:35,028 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:24:35,029 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:24:35,030 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:24:35,032 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:24:35,034 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:24:35,036 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:24:35,037 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:24:35,038 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:24:35,041 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:24:35,041 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:24:35,042 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:24:35,043 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:24:35,044 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:24:35,044 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:24:35,045 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:24:35,046 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:24:35,047 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:24:35,048 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:24:35,048 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:24:35,048 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:24:35,049 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:24:35,050 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:24:35,050 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 14:24:35,072 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:24:35,073 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:24:35,073 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:24:35,074 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:24:35,074 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:24:35,074 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:24:35,074 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:24:35,074 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:24:35,077 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:24:35,077 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:24:35,077 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:24:35,077 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:24:35,078 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:24:35,078 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:24:35,079 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:24:35,079 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:24:35,079 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:24:35,079 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:24:35,079 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:24:35,080 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:24:35,080 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:24:35,080 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:24:35,080 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:24:35,080 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:24:35,080 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:24:35,081 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:24:35,081 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:24:35,081 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:24:35,081 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:24:35,081 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:24:35,082 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:24:35,082 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:24:35,082 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:24:35,082 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:24:35,129 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:24:35,148 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:24:35,152 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:24:35,153 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:24:35,154 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:24:35,155 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label10_true-unreach-call.c [2018-11-07 14:24:35,225 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccf54ebce/9770ffc4bf51479ea45185ff17908b56/FLAGffd606d40 [2018-11-07 14:24:35,886 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:24:35,889 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label10_true-unreach-call.c [2018-11-07 14:24:35,909 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccf54ebce/9770ffc4bf51479ea45185ff17908b56/FLAGffd606d40 [2018-11-07 14:24:35,930 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccf54ebce/9770ffc4bf51479ea45185ff17908b56 [2018-11-07 14:24:35,943 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:24:35,946 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:24:35,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:24:35,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:24:35,954 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:24:35,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:24:35" (1/1) ... [2018-11-07 14:24:35,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d010140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:35, skipping insertion in model container [2018-11-07 14:24:35,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:24:35" (1/1) ... [2018-11-07 14:24:35,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:24:36,045 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:24:36,789 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:24:36,794 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:24:37,045 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:24:37,069 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:24:37,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:37 WrapperNode [2018-11-07 14:24:37,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:24:37,071 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:24:37,071 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:24:37,071 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:24:37,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:37" (1/1) ... [2018-11-07 14:24:37,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:37" (1/1) ... [2018-11-07 14:24:37,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:24:37,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:24:37,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:24:37,266 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:24:37,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:37" (1/1) ... [2018-11-07 14:24:37,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:37" (1/1) ... [2018-11-07 14:24:37,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:37" (1/1) ... [2018-11-07 14:24:37,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:37" (1/1) ... [2018-11-07 14:24:37,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:37" (1/1) ... [2018-11-07 14:24:37,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:37" (1/1) ... [2018-11-07 14:24:37,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:37" (1/1) ... [2018-11-07 14:24:37,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:24:37,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:24:37,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:24:37,414 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:24:37,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:37" (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 14:24:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:24:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:24:37,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:24:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:24:37,493 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:24:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:24:37,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:24:37,493 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:24:37,494 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:24:41,748 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:24:41,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:24:41 BoogieIcfgContainer [2018-11-07 14:24:41,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:24:41,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:24:41,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:24:41,754 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:24:41,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:24:35" (1/3) ... [2018-11-07 14:24:41,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ec86c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:24:41, skipping insertion in model container [2018-11-07 14:24:41,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:24:37" (2/3) ... [2018-11-07 14:24:41,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ec86c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:24:41, skipping insertion in model container [2018-11-07 14:24:41,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:24:41" (3/3) ... [2018-11-07 14:24:41,758 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label10_true-unreach-call.c [2018-11-07 14:24:41,770 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:24:41,780 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:24:41,800 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:24:41,842 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:24:41,843 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:24:41,843 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:24:41,843 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:24:41,843 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:24:41,843 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:24:41,844 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:24:41,844 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:24:41,874 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 14:24:41,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-07 14:24:41,882 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:24:41,884 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] [2018-11-07 14:24:41,886 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:24:41,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:24:41,893 INFO L82 PathProgramCache]: Analyzing trace with hash -250768471, now seen corresponding path program 1 times [2018-11-07 14:24:41,896 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:24:41,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:24:41,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:24:41,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:24:41,959 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:24:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:24:42,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:24:42,348 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:24:42,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:24:42,349 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:24:42,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:24:42,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:24:42,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:24:42,372 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-07 14:24:45,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:24:45,665 INFO L93 Difference]: Finished difference Result 1001 states and 1780 transitions. [2018-11-07 14:24:45,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:24:45,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-11-07 14:24:45,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:24:45,692 INFO L225 Difference]: With dead ends: 1001 [2018-11-07 14:24:45,693 INFO L226 Difference]: Without dead ends: 702 [2018-11-07 14:24:45,703 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 14:24:45,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2018-11-07 14:24:45,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 699. [2018-11-07 14:24:45,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2018-11-07 14:24:45,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1082 transitions. [2018-11-07 14:24:45,813 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1082 transitions. Word has length 29 [2018-11-07 14:24:45,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:24:45,813 INFO L480 AbstractCegarLoop]: Abstraction has 699 states and 1082 transitions. [2018-11-07 14:24:45,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:24:45,813 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1082 transitions. [2018-11-07 14:24:45,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-07 14:24:45,819 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:24:45,820 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:24:45,820 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:24:45,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:24:45,821 INFO L82 PathProgramCache]: Analyzing trace with hash -2105116581, now seen corresponding path program 1 times [2018-11-07 14:24:45,821 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:24:45,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:24:45,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:24:45,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:24:45,823 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:24:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:24:46,189 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:24:46,190 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:24:46,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:24:46,190 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:24:46,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:24:46,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:24:46,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:24:46,194 INFO L87 Difference]: Start difference. First operand 699 states and 1082 transitions. Second operand 6 states. [2018-11-07 14:24:50,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:24:50,579 INFO L93 Difference]: Finished difference Result 2534 states and 4100 transitions. [2018-11-07 14:24:50,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:24:50,580 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-11-07 14:24:50,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:24:50,598 INFO L225 Difference]: With dead ends: 2534 [2018-11-07 14:24:50,599 INFO L226 Difference]: Without dead ends: 1841 [2018-11-07 14:24:50,608 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:24:50,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2018-11-07 14:24:50,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1815. [2018-11-07 14:24:50,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1815 states. [2018-11-07 14:24:50,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2683 transitions. [2018-11-07 14:24:50,716 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2683 transitions. Word has length 102 [2018-11-07 14:24:50,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:24:50,717 INFO L480 AbstractCegarLoop]: Abstraction has 1815 states and 2683 transitions. [2018-11-07 14:24:50,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:24:50,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2683 transitions. [2018-11-07 14:24:50,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-11-07 14:24:50,722 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:24:50,723 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:24:50,723 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:24:50,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:24:50,723 INFO L82 PathProgramCache]: Analyzing trace with hash 367698756, now seen corresponding path program 1 times [2018-11-07 14:24:50,723 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:24:50,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:24:50,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:24:50,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:24:50,725 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:24:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:24:50,878 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:24:50,878 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:24:50,878 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:24:50,878 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:24:50,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:24:50,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:24:50,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:24:50,880 INFO L87 Difference]: Start difference. First operand 1815 states and 2683 transitions. Second operand 4 states. [2018-11-07 14:24:53,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:24:53,407 INFO L93 Difference]: Finished difference Result 4796 states and 7372 transitions. [2018-11-07 14:24:53,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:24:53,408 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2018-11-07 14:24:53,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:24:53,430 INFO L225 Difference]: With dead ends: 4796 [2018-11-07 14:24:53,430 INFO L226 Difference]: Without dead ends: 2987 [2018-11-07 14:24:53,443 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:24:53,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2018-11-07 14:24:53,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 2970. [2018-11-07 14:24:53,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2970 states. [2018-11-07 14:24:53,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 4362 transitions. [2018-11-07 14:24:53,534 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 4362 transitions. Word has length 103 [2018-11-07 14:24:53,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:24:53,534 INFO L480 AbstractCegarLoop]: Abstraction has 2970 states and 4362 transitions. [2018-11-07 14:24:53,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:24:53,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 4362 transitions. [2018-11-07 14:24:53,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-11-07 14:24:53,539 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:24:53,540 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:24:53,540 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:24:53,540 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:24:53,540 INFO L82 PathProgramCache]: Analyzing trace with hash -537163217, now seen corresponding path program 1 times [2018-11-07 14:24:53,541 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:24:53,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:24:53,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:24:53,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:24:53,542 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:24:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:24:53,762 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:24:53,763 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:24:53,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:24:53,763 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:24:53,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:24:53,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:24:53,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:24:53,765 INFO L87 Difference]: Start difference. First operand 2970 states and 4362 transitions. Second operand 6 states. [2018-11-07 14:24:57,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:24:57,332 INFO L93 Difference]: Finished difference Result 11408 states and 20931 transitions. [2018-11-07 14:24:57,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 14:24:57,339 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2018-11-07 14:24:57,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:24:57,443 INFO L225 Difference]: With dead ends: 11408 [2018-11-07 14:24:57,444 INFO L226 Difference]: Without dead ends: 8444 [2018-11-07 14:24:57,536 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 14:24:57,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8444 states. [2018-11-07 14:24:57,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8444 to 7648. [2018-11-07 14:24:57,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7648 states. [2018-11-07 14:24:57,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7648 states to 7648 states and 11142 transitions. [2018-11-07 14:24:57,874 INFO L78 Accepts]: Start accepts. Automaton has 7648 states and 11142 transitions. Word has length 128 [2018-11-07 14:24:57,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:24:57,875 INFO L480 AbstractCegarLoop]: Abstraction has 7648 states and 11142 transitions. [2018-11-07 14:24:57,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:24:57,875 INFO L276 IsEmpty]: Start isEmpty. Operand 7648 states and 11142 transitions. [2018-11-07 14:24:57,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-11-07 14:24:57,883 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:24:57,883 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:24:57,884 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:24:57,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:24:57,884 INFO L82 PathProgramCache]: Analyzing trace with hash -388558922, now seen corresponding path program 1 times [2018-11-07 14:24:57,884 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:24:57,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:24:57,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:24:57,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:24:57,886 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:24:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:24:58,302 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:24:58,302 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:24:58,302 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:24:58,303 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 177 with the following transitions: [2018-11-07 14:24:58,306 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [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], [502], [503], [507], [511], [514], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 14:24:58,355 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:24:58,355 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:24:58,827 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:24:58,831 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 14:24:58,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:24:58,861 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:24:59,398 INFO L227 lantSequenceWeakener]: Weakened 167 states. On average, predicates are now at 73.15% of their original sizes. [2018-11-07 14:24:59,398 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:24:59,734 INFO L415 sIntCurrentIteration]: We unified 175 AI predicates to 175 [2018-11-07 14:24:59,734 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:24:59,735 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:24:59,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 14:24:59,735 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:24:59,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 14:24:59,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 14:24:59,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 14:24:59,737 INFO L87 Difference]: Start difference. First operand 7648 states and 11142 transitions. Second operand 7 states. [2018-11-07 14:25:02,133 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