java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label01_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 18:53:12,851 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 18:53:12,854 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 18:53:12,869 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 18:53:12,870 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 18:53:12,871 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 18:53:12,872 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 18:53:12,874 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 18:53:12,876 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 18:53:12,877 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 18:53:12,878 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 18:53:12,878 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 18:53:12,879 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 18:53:12,880 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 18:53:12,881 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 18:53:12,882 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 18:53:12,883 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 18:53:12,885 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 18:53:12,887 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 18:53:12,888 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 18:53:12,889 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 18:53:12,891 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 18:53:12,893 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 18:53:12,893 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 18:53:12,893 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 18:53:12,894 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 18:53:12,895 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 18:53:12,896 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 18:53:12,897 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 18:53:12,898 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 18:53:12,898 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 18:53:12,899 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 18:53:12,899 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 18:53:12,899 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 18:53:12,900 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 18:53:12,900 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 18:53:12,901 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 18:53:12,920 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 18:53:12,920 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 18:53:12,923 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 18:53:12,923 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 18:53:12,924 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 18:53:12,924 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 18:53:12,924 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 18:53:12,925 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 18:53:12,925 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 18:53:12,925 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 18:53:12,925 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 18:53:12,925 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 18:53:12,926 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 18:53:12,927 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 18:53:12,928 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 18:53:12,928 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 18:53:12,928 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 18:53:12,928 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 18:53:12,929 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 18:53:12,929 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 18:53:12,929 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 18:53:12,929 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 18:53:12,929 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 18:53:12,931 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 18:53:12,931 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 18:53:12,931 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 18:53:12,931 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 18:53:12,932 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 18:53:12,932 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 18:53:12,932 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 18:53:12,932 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 18:53:12,932 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 18:53:12,933 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 18:53:12,933 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 18:53:12,933 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 18:53:13,006 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 18:53:13,022 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 18:53:13,028 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 18:53:13,030 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 18:53:13,030 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 18:53:13,031 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label01_true-unreach-call.c [2018-11-12 18:53:13,103 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41feade99/7f310087a78f41b691e9641dcf16b75f/FLAGaff2a0a85 [2018-11-12 18:53:13,946 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 18:53:13,947 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label01_true-unreach-call.c [2018-11-12 18:53:13,995 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41feade99/7f310087a78f41b691e9641dcf16b75f/FLAGaff2a0a85 [2018-11-12 18:53:14,015 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41feade99/7f310087a78f41b691e9641dcf16b75f [2018-11-12 18:53:14,027 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 18:53:14,030 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 18:53:14,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 18:53:14,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 18:53:14,037 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 18:53:14,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:53:14" (1/1) ... [2018-11-12 18:53:14,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aefa37d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:53:14, skipping insertion in model container [2018-11-12 18:53:14,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:53:14" (1/1) ... [2018-11-12 18:53:14,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 18:53:14,257 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 18:53:15,760 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:53:15,765 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 18:53:16,512 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:53:16,557 INFO L193 MainTranslator]: Completed translation [2018-11-12 18:53:16,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:53:16 WrapperNode [2018-11-12 18:53:16,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 18:53:16,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 18:53:16,560 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 18:53:16,560 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 18:53:16,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:53:16" (1/1) ... [2018-11-12 18:53:16,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:53:16" (1/1) ... [2018-11-12 18:53:16,974 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 18:53:16,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 18:53:16,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 18:53:16,974 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 18:53:16,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:53:16" (1/1) ... [2018-11-12 18:53:16,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:53:16" (1/1) ... [2018-11-12 18:53:17,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:53:16" (1/1) ... [2018-11-12 18:53:17,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:53:16" (1/1) ... [2018-11-12 18:53:17,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:53:16" (1/1) ... [2018-11-12 18:53:17,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:53:16" (1/1) ... [2018-11-12 18:53:17,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:53:16" (1/1) ... [2018-11-12 18:53:17,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 18:53:17,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 18:53:17,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 18:53:17,230 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 18:53:17,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:53:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 18:53:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 18:53:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 18:53:17,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 18:53:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-12 18:53:17,307 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-12 18:53:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 18:53:17,307 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 18:53:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 18:53:17,307 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 18:53:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 18:53:17,308 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 18:53:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 18:53:17,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 18:53:17,309 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 18:53:17,309 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 18:53:27,985 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 18:53:27,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:53:27 BoogieIcfgContainer [2018-11-12 18:53:27,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 18:53:27,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 18:53:27,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 18:53:27,990 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 18:53:27,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 06:53:14" (1/3) ... [2018-11-12 18:53:27,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d907b4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:53:27, skipping insertion in model container [2018-11-12 18:53:27,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:53:16" (2/3) ... [2018-11-12 18:53:27,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d907b4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:53:27, skipping insertion in model container [2018-11-12 18:53:27,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:53:27" (3/3) ... [2018-11-12 18:53:27,994 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label01_true-unreach-call.c [2018-11-12 18:53:28,004 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 18:53:28,015 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 18:53:28,034 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 18:53:28,093 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 18:53:28,094 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 18:53:28,094 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 18:53:28,094 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 18:53:28,094 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 18:53:28,094 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 18:53:28,094 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 18:53:28,095 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 18:53:28,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-12 18:53:28,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-12 18:53:28,158 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:53:28,159 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:53:28,162 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:53:28,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:53:28,169 INFO L82 PathProgramCache]: Analyzing trace with hash 980545676, now seen corresponding path program 1 times [2018-11-12 18:53:28,172 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:53:28,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:53:28,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:53:28,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:53:28,231 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:53:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:53:28,718 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:53:28,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:53:28,853 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:53:28,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 18:53:28,854 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:53:28,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 18:53:28,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 18:53:28,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 18:53:28,904 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-12 18:53:37,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:53:37,185 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-11-12 18:53:37,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 18:53:37,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2018-11-12 18:53:37,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:53:37,229 INFO L225 Difference]: With dead ends: 3097 [2018-11-12 18:53:37,229 INFO L226 Difference]: Without dead ends: 1975 [2018-11-12 18:53:37,250 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 18:53:37,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-11-12 18:53:37,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-11-12 18:53:37,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-11-12 18:53:37,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-11-12 18:53:37,441 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 56 [2018-11-12 18:53:37,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:53:37,442 INFO L480 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-11-12 18:53:37,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 18:53:37,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-11-12 18:53:37,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-12 18:53:37,454 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:53:37,455 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:53:37,455 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:53:37,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:53:37,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1287580412, now seen corresponding path program 1 times [2018-11-12 18:53:37,456 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:53:37,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:53:37,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:53:37,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:53:37,458 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:53:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:53:37,806 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:53:37,806 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:53:37,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 18:53:37,807 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:53:37,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 18:53:37,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 18:53:37,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 18:53:37,809 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-11-12 18:53:52,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:53:52,812 INFO L93 Difference]: Finished difference Result 5733 states and 9688 transitions. [2018-11-12 18:53:52,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 18:53:52,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2018-11-12 18:53:52,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:53:52,844 INFO L225 Difference]: With dead ends: 5733 [2018-11-12 18:53:52,844 INFO L226 Difference]: Without dead ends: 3765 [2018-11-12 18:53:52,851 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 18:53:52,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2018-11-12 18:53:52,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3682. [2018-11-12 18:53:52,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3682 states. [2018-11-12 18:53:52,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3682 states to 3682 states and 5656 transitions. [2018-11-12 18:53:52,974 INFO L78 Accepts]: Start accepts. Automaton has 3682 states and 5656 transitions. Word has length 132 [2018-11-12 18:53:52,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:53:52,975 INFO L480 AbstractCegarLoop]: Abstraction has 3682 states and 5656 transitions. [2018-11-12 18:53:52,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 18:53:52,975 INFO L276 IsEmpty]: Start isEmpty. Operand 3682 states and 5656 transitions. [2018-11-12 18:53:52,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-12 18:53:52,981 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:53:52,981 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:53:52,981 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:53:52,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:53:52,982 INFO L82 PathProgramCache]: Analyzing trace with hash 800617696, now seen corresponding path program 1 times [2018-11-12 18:53:52,982 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:53:52,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:53:52,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:53:52,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:53:52,983 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:53:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:53:53,241 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:53:53,241 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:53:53,241 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 18:53:53,242 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:53:53,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 18:53:53,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 18:53:53,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 18:53:53,243 INFO L87 Difference]: Start difference. First operand 3682 states and 5656 transitions. Second operand 5 states. [2018-11-12 18:54:10,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:54:10,464 INFO L93 Difference]: Finished difference Result 13649 states and 21728 transitions. [2018-11-12 18:54:10,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 18:54:10,465 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2018-11-12 18:54:10,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:54:10,530 INFO L225 Difference]: With dead ends: 13649 [2018-11-12 18:54:10,531 INFO L226 Difference]: Without dead ends: 9973 [2018-11-12 18:54:10,559 INFO L604 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 [2018-11-12 18:54:10,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9973 states. [2018-11-12 18:54:10,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9973 to 9785. [2018-11-12 18:54:10,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9785 states. [2018-11-12 18:54:10,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9785 states to 9785 states and 14481 transitions. [2018-11-12 18:54:10,878 INFO L78 Accepts]: Start accepts. Automaton has 9785 states and 14481 transitions. Word has length 146 [2018-11-12 18:54:10,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:54:10,879 INFO L480 AbstractCegarLoop]: Abstraction has 9785 states and 14481 transitions. [2018-11-12 18:54:10,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 18:54:10,879 INFO L276 IsEmpty]: Start isEmpty. Operand 9785 states and 14481 transitions. [2018-11-12 18:54:10,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-11-12 18:54:10,886 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:54:10,891 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:54:10,891 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:54:10,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:54:10,892 INFO L82 PathProgramCache]: Analyzing trace with hash -2020564548, now seen corresponding path program 1 times [2018-11-12 18:54:10,892 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:54:10,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:54:10,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:54:10,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:54:10,893 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:54:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:54:11,255 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:54:11,326 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:54:11,327 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:54:11,327 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 18:54:11,327 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:54:11,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 18:54:11,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 18:54:11,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 18:54:11,328 INFO L87 Difference]: Start difference. First operand 9785 states and 14481 transitions. Second operand 6 states. [2018-11-12 18:54:23,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:54:23,469 INFO L93 Difference]: Finished difference Result 34095 states and 53559 transitions. [2018-11-12 18:54:23,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:54:23,470 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2018-11-12 18:54:23,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:54:23,601 INFO L225 Difference]: With dead ends: 34095 [2018-11-12 18:54:23,601 INFO L226 Difference]: Without dead ends: 24316 [2018-11-12 18:54:23,674 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 18:54:23,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24316 states. [2018-11-12 18:54:24,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24316 to 24095. [2018-11-12 18:54:24,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24095 states. [2018-11-12 18:54:24,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24095 states to 24095 states and 33907 transitions. [2018-11-12 18:54:24,283 INFO L78 Accepts]: Start accepts. Automaton has 24095 states and 33907 transitions. Word has length 164 [2018-11-12 18:54:24,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:54:24,284 INFO L480 AbstractCegarLoop]: Abstraction has 24095 states and 33907 transitions. [2018-11-12 18:54:24,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 18:54:24,284 INFO L276 IsEmpty]: Start isEmpty. Operand 24095 states and 33907 transitions. [2018-11-12 18:54:24,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-11-12 18:54:24,292 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:54:24,293 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:54:24,293 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:54:24,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:54:24,293 INFO L82 PathProgramCache]: Analyzing trace with hash -744065737, now seen corresponding path program 1 times [2018-11-12 18:54:24,294 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:54:24,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:54:24,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:54:24,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:54:24,295 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:54:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:54:24,591 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:54:24,794 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:54:24,794 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:54:24,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 18:54:24,794 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:54:24,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 18:54:24,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 18:54:24,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 18:54:24,795 INFO L87 Difference]: Start difference. First operand 24095 states and 33907 transitions. Second operand 6 states. [2018-11-12 18:54:33,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:54:33,359 INFO L93 Difference]: Finished difference Result 61325 states and 95892 transitions. [2018-11-12 18:54:33,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:54:33,359 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2018-11-12 18:54:33,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:54:33,532 INFO L225 Difference]: With dead ends: 61325 [2018-11-12 18:54:33,532 INFO L226 Difference]: Without dead ends: 37236 [2018-11-12 18:54:33,602 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 18:54:33,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37236 states. [2018-11-12 18:54:34,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37236 to 37038. [2018-11-12 18:54:34,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37038 states. [2018-11-12 18:54:34,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37038 states to 37038 states and 52767 transitions. [2018-11-12 18:54:34,500 INFO L78 Accepts]: Start accepts. Automaton has 37038 states and 52767 transitions. Word has length 175 [2018-11-12 18:54:34,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:54:34,500 INFO L480 AbstractCegarLoop]: Abstraction has 37038 states and 52767 transitions. [2018-11-12 18:54:34,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 18:54:34,500 INFO L276 IsEmpty]: Start isEmpty. Operand 37038 states and 52767 transitions. [2018-11-12 18:54:34,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-11-12 18:54:34,508 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:54:34,508 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:54:34,509 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:54:34,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:54:34,509 INFO L82 PathProgramCache]: Analyzing trace with hash 787887912, now seen corresponding path program 1 times [2018-11-12 18:54:34,509 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:54:34,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:54:34,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:54:34,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:54:34,511 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:54:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:54:34,801 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:54:35,166 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:54:35,166 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:54:35,167 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 18:54:35,167 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:54:35,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 18:54:35,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 18:54:35,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 18:54:35,168 INFO L87 Difference]: Start difference. First operand 37038 states and 52767 transitions. Second operand 6 states. [2018-11-12 18:54:42,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:54:42,659 INFO L93 Difference]: Finished difference Result 81264 states and 119246 transitions. [2018-11-12 18:54:42,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:54:42,664 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2018-11-12 18:54:42,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:54:42,828 INFO L225 Difference]: With dead ends: 81264 [2018-11-12 18:54:42,828 INFO L226 Difference]: Without dead ends: 44232 [2018-11-12 18:54:42,911 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 18:54:42,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44232 states. [2018-11-12 18:54:43,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44232 to 44131. [2018-11-12 18:54:43,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44131 states. [2018-11-12 18:54:43,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44131 states to 44131 states and 60145 transitions. [2018-11-12 18:54:43,841 INFO L78 Accepts]: Start accepts. Automaton has 44131 states and 60145 transitions. Word has length 203 [2018-11-12 18:54:43,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:54:43,846 INFO L480 AbstractCegarLoop]: Abstraction has 44131 states and 60145 transitions. [2018-11-12 18:54:43,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 18:54:43,846 INFO L276 IsEmpty]: Start isEmpty. Operand 44131 states and 60145 transitions. [2018-11-12 18:54:43,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-11-12 18:54:43,869 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:54:43,870 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:54:43,870 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:54:43,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:54:43,870 INFO L82 PathProgramCache]: Analyzing trace with hash 334178010, now seen corresponding path program 1 times [2018-11-12 18:54:43,870 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:54:43,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:54:43,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:54:43,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:54:43,872 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:54:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:54:44,405 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:54:44,405 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:54:44,405 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:54:44,406 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 254 with the following transitions: [2018-11-12 18:54:44,414 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2975], [2977], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [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], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3361], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-12 18:54:44,481 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:54:44,482 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:54:45,588 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:54:45,590 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Performed 2836 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2836 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 26 variables. [2018-11-12 18:54:45,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:54:45,628 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:54:46,742 INFO L227 lantSequenceWeakener]: Weakened 229 states. On average, predicates are now at 71.62% of their original sizes. [2018-11-12 18:54:46,743 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:54:47,608 INFO L415 sIntCurrentIteration]: We unified 252 AI predicates to 252 [2018-11-12 18:54:47,608 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:54:47,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:54:47,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-12 18:54:47,609 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:54:47,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 18:54:47,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 18:54:47,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-12 18:54:47,611 INFO L87 Difference]: Start difference. First operand 44131 states and 60145 transitions. Second operand 11 states. [2018-11-12 18:55:00,985 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:56:01,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:56:01,652 INFO L93 Difference]: Finished difference Result 89065 states and 121184 transitions. [2018-11-12 18:56:01,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-12 18:56:01,652 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 253 [2018-11-12 18:56:01,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:56:01,764 INFO L225 Difference]: With dead ends: 89065 [2018-11-12 18:56:01,764 INFO L226 Difference]: Without dead ends: 44940 [2018-11-12 18:56:01,837 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 257 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-11-12 18:56:01,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44940 states. [2018-11-12 18:56:03,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44940 to 44935. [2018-11-12 18:56:03,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44935 states. [2018-11-12 18:56:03,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44935 states to 44935 states and 60960 transitions. [2018-11-12 18:56:03,124 INFO L78 Accepts]: Start accepts. Automaton has 44935 states and 60960 transitions. Word has length 253 [2018-11-12 18:56:03,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:56:03,125 INFO L480 AbstractCegarLoop]: Abstraction has 44935 states and 60960 transitions. [2018-11-12 18:56:03,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 18:56:03,125 INFO L276 IsEmpty]: Start isEmpty. Operand 44935 states and 60960 transitions. [2018-11-12 18:56:03,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-11-12 18:56:03,135 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:56:03,135 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:56:03,136 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:56:03,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:56:03,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1658243276, now seen corresponding path program 1 times [2018-11-12 18:56:03,136 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:56:03,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:56:03,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:56:03,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:56:03,138 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:56:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:56:03,566 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:56:03,567 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:56:03,567 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:56:03,567 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 280 with the following transitions: [2018-11-12 18:56:03,568 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2975], [2977], [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], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3425], [3429], [3440], [3451], [3455], [3459], [3463], [3467], [3471], [3475], [3479], [3483], [3487], [3498], [3502], [3506], [3517], [3521], [3525], [3529], [3533], [3537], [3541], [3545], [3556], [3560], [3564], [3568], [3572], [3576], [3580], [3591], [3595], [3599], [3603], [3614], [3618], [3622], [3626], [3630], [3634], [3638], [3642], [3646], [3650], [3654], [3658], [3662], [3666], [3670], [3674], [3678], [3682], [3686], [3690], [3694], [3698], [3709], [3713], [3717], [3721], [3725], [3729], [3733], [3737], [3741], [3745], [3749], [3753], [3757], [3768], [3772], [3776], [3780], [3784], [3788], [3792], [3796], [3800], [3804], [3815], [3819], [3823], [3827], [3831], [3835], [3839], [3843], [3847], [3851], [3862], [3865], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-12 18:56:03,577 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:56:03,577 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:56:03,972 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:56:05,175 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:56:05,175 INFO L272 AbstractInterpreter]: Visited 230 different actions 678 times. Merged at 5 different actions 10 times. Never widened. Performed 13087 root evaluator evaluations with a maximum evaluation depth of 6. Performed 13087 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 18:56:05,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:56:05,214 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:56:06,500 INFO L227 lantSequenceWeakener]: Weakened 276 states. On average, predicates are now at 73.25% of their original sizes. [2018-11-12 18:56:06,501 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:56:06,735 INFO L415 sIntCurrentIteration]: We unified 278 AI predicates to 278 [2018-11-12 18:56:06,735 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:56:06,735 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:56:06,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2018-11-12 18:56:06,736 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:56:06,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 18:56:06,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 18:56:06,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-12 18:56:06,737 INFO L87 Difference]: Start difference. First operand 44935 states and 60960 transitions. Second operand 10 states. Received shutdown request... [2018-11-12 18:56:39,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-12 18:56:39,150 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 18:56:39,155 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 18:56:39,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 06:56:39 BoogieIcfgContainer [2018-11-12 18:56:39,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 18:56:39,157 INFO L168 Benchmark]: Toolchain (without parser) took 205128.90 ms. Allocated memory was 1.5 GB in the beginning and 5.7 GB in the end (delta: 4.1 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-11-12 18:56:39,158 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 18:56:39,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2527.26 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-11-12 18:56:39,160 INFO L168 Benchmark]: Boogie Procedure Inliner took 414.47 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 812.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. [2018-11-12 18:56:39,161 INFO L168 Benchmark]: Boogie Preprocessor took 255.53 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. [2018-11-12 18:56:39,161 INFO L168 Benchmark]: RCFGBuilder took 10755.89 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 156.8 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 29.0 MB). Peak memory consumption was 663.8 MB. Max. memory is 7.1 GB. [2018-11-12 18:56:39,162 INFO L168 Benchmark]: TraceAbstraction took 191169.18 ms. Allocated memory was 2.5 GB in the beginning and 5.7 GB in the end (delta: 3.2 GB). Free memory was 2.2 GB in the beginning and 2.9 GB in the end (delta: -698.6 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-12 18:56:39,168 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 2527.26 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 414.47 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 812.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 255.53 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10755.89 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 156.8 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 29.0 MB). Peak memory consumption was 663.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 191169.18 ms. Allocated memory was 2.5 GB in the beginning and 5.7 GB in the end (delta: 3.2 GB). Free memory was 2.2 GB in the beginning and 2.9 GB in the end (delta: -698.6 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 159]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 159). Cancelled while BasicCegarLoop was constructing difference of abstraction (44935states) and FLOYD_HOARE automaton (currently 15 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (28605 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 191.0s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 176.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4534 SDtfs, 24105 SDslu, 3970 SDs, 0 SdLazy, 42254 SolverSat, 8177 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 103.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 595 GetRequests, 527 SyntacticMatches, 5 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44935occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.8s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9982600971628864 AbsIntWeakeningRatio, 0.09622641509433963 AbsIntAvgWeakeningVarsNumRemoved, 10.450943396226416 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 797 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 1408 NumberOfCodeBlocks, 1408 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1400 ConstructedInterpolants, 0 QuantifiedInterpolants, 934146 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 417/468 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown