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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label42_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:18:32,903 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:18:32,905 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:18:32,918 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:18:32,919 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:18:32,920 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:18:32,921 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:18:32,923 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:18:32,925 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:18:32,926 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:18:32,927 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:18:32,927 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:18:32,928 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:18:32,929 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:18:32,930 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:18:32,931 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:18:32,932 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:18:32,934 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:18:32,936 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:18:32,937 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:18:32,938 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:18:32,939 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:18:32,942 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:18:32,942 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:18:32,942 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:18:32,943 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:18:32,944 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:18:32,945 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:18:32,946 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:18:32,947 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:18:32,947 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:18:32,948 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:18:32,948 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:18:32,948 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:18:32,949 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:18:32,950 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:18:32,950 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:18:32,966 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:18:32,966 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:18:32,967 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:18:32,967 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:18:32,968 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:18:32,968 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:18:32,968 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:18:32,968 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:18:32,968 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:18:32,969 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:18:32,969 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:18:32,969 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:18:32,969 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:18:32,969 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:18:32,972 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:18:32,973 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:18:32,973 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:18:32,973 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:18:32,973 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:18:32,975 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:18:32,976 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:18:32,976 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:18:32,976 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:18:32,976 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:18:32,976 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:18:32,977 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:18:32,977 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:18:32,977 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:18:32,977 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:18:32,977 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:18:32,978 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:18:32,978 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:18:32,978 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:18:32,978 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:18:32,978 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:18:32,979 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:18:33,053 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:18:33,072 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:18:33,075 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:18:33,077 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:18:33,078 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:18:33,079 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label42_true-unreach-call.c [2018-11-07 09:18:33,142 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc2159c00/fcc070b7f47946be9d6074c395a47581/FLAG4b9283fd4 [2018-11-07 09:18:33,852 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:18:33,853 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label42_true-unreach-call.c [2018-11-07 09:18:33,875 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc2159c00/fcc070b7f47946be9d6074c395a47581/FLAG4b9283fd4 [2018-11-07 09:18:33,895 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc2159c00/fcc070b7f47946be9d6074c395a47581 [2018-11-07 09:18:33,907 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:18:33,910 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:18:33,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:18:33,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:18:33,919 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:18:33,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:18:33" (1/1) ... [2018-11-07 09:18:33,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9260898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:18:33, skipping insertion in model container [2018-11-07 09:18:33,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:18:33" (1/1) ... [2018-11-07 09:18:33,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:18:34,028 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:18:35,052 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:18:35,057 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:18:35,288 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:18:35,310 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:18:35,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:18:35 WrapperNode [2018-11-07 09:18:35,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:18:35,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:18:35,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:18:35,312 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:18:35,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:18:35" (1/1) ... [2018-11-07 09:18:35,506 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:18:35" (1/1) ... [2018-11-07 09:18:35,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:18:35,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:18:35,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:18:35,518 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:18:35,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:18:35" (1/1) ... [2018-11-07 09:18:35,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:18:35" (1/1) ... [2018-11-07 09:18:35,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:18:35" (1/1) ... [2018-11-07 09:18:35,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:18:35" (1/1) ... [2018-11-07 09:18:35,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:18:35" (1/1) ... [2018-11-07 09:18:35,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:18:35" (1/1) ... [2018-11-07 09:18:35,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:18:35" (1/1) ... [2018-11-07 09:18:35,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:18:35,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:18:35,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:18:35,673 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:18:35,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:18:35" (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 09:18:35,757 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:18:35,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:18:35,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:18:35,758 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:18:35,758 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:18:35,758 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:18:35,758 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:18:35,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:18:35,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:18:35,761 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:18:35,762 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:18:41,862 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:18:41,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:18:41 BoogieIcfgContainer [2018-11-07 09:18:41,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:18:41,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:18:41,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:18:41,869 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:18:41,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:18:33" (1/3) ... [2018-11-07 09:18:41,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fec3dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:18:41, skipping insertion in model container [2018-11-07 09:18:41,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:18:35" (2/3) ... [2018-11-07 09:18:41,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fec3dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:18:41, skipping insertion in model container [2018-11-07 09:18:41,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:18:41" (3/3) ... [2018-11-07 09:18:41,878 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label42_true-unreach-call.c [2018-11-07 09:18:41,889 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:18:41,898 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:18:41,915 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:18:41,957 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:18:41,957 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:18:41,957 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:18:41,957 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:18:41,958 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:18:41,958 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:18:41,958 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:18:41,958 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:18:41,993 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 09:18:42,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-11-07 09:18:42,009 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:18:42,010 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:18:42,013 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:18:42,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:18:42,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1180093893, now seen corresponding path program 1 times [2018-11-07 09:18:42,025 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:18:42,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:18:42,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:18:42,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:18:42,085 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:18:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:18:42,577 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:18:42,706 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 09:18:42,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:18:42,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 09:18:42,710 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:18:42,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:18:42,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:18:42,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:18:42,739 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 09:18:46,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:18:46,293 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 09:18:46,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:18:46,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2018-11-07 09:18:46,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:18:46,319 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 09:18:46,319 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 09:18:46,334 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 [2018-11-07 09:18:46,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 09:18:46,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 09:18:46,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 09:18:46,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1353 transitions. [2018-11-07 09:18:46,456 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1353 transitions. Word has length 69 [2018-11-07 09:18:46,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:18:46,457 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1353 transitions. [2018-11-07 09:18:46,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:18:46,458 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1353 transitions. [2018-11-07 09:18:46,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-11-07 09:18:46,470 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:18:46,470 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, 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] [2018-11-07 09:18:46,471 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:18:46,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:18:46,471 INFO L82 PathProgramCache]: Analyzing trace with hash 814141313, now seen corresponding path program 1 times [2018-11-07 09:18:46,471 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:18:46,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:18:46,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:18:46,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:18:46,474 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:18:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:18:46,859 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:18:47,042 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:18:47,042 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:18:47,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:18:47,043 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:18:47,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:18:47,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:18:47,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:18:47,046 INFO L87 Difference]: Start difference. First operand 744 states and 1353 transitions. Second operand 6 states. [2018-11-07 09:18:54,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:18:54,660 INFO L93 Difference]: Finished difference Result 2184 states and 3997 transitions. [2018-11-07 09:18:54,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:18:54,664 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2018-11-07 09:18:54,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:18:54,677 INFO L225 Difference]: With dead ends: 2184 [2018-11-07 09:18:54,678 INFO L226 Difference]: Without dead ends: 1446 [2018-11-07 09:18:54,683 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 [2018-11-07 09:18:54,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2018-11-07 09:18:54,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1425. [2018-11-07 09:18:54,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2018-11-07 09:18:54,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2267 transitions. [2018-11-07 09:18:54,736 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2267 transitions. Word has length 162 [2018-11-07 09:18:54,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:18:54,737 INFO L480 AbstractCegarLoop]: Abstraction has 1425 states and 2267 transitions. [2018-11-07 09:18:54,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:18:54,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2267 transitions. [2018-11-07 09:18:54,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-11-07 09:18:54,748 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:18:54,748 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, 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, 1, 1, 1, 1, 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 09:18:54,749 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:18:54,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:18:54,749 INFO L82 PathProgramCache]: Analyzing trace with hash -712455945, now seen corresponding path program 1 times [2018-11-07 09:18:54,749 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:18:54,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:18:54,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:18:54,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:18:54,751 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:18:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:18:55,086 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:18:55,086 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:18:55,087 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:18:55,088 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 274 with the following transitions: [2018-11-07 09:18:55,090 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [631], [633], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 09:18:55,142 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:18:55,143 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:18:55,780 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:18:55,782 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 09:18:55,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:18:55,827 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:18:56,600 INFO L227 lantSequenceWeakener]: Weakened 264 states. On average, predicates are now at 78.18% of their original sizes. [2018-11-07 09:18:56,600 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:18:56,818 INFO L415 sIntCurrentIteration]: We unified 272 AI predicates to 272 [2018-11-07 09:18:56,819 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:18:56,820 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:18:56,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 09:18:56,820 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:18:56,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:18:56,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:18:56,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:18:56,822 INFO L87 Difference]: Start difference. First operand 1425 states and 2267 transitions. Second operand 6 states. [2018-11-07 09:20:39,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:20:39,197 INFO L93 Difference]: Finished difference Result 3184 states and 5088 transitions. [2018-11-07 09:20:39,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:20:39,198 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 273 [2018-11-07 09:20:39,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:20:39,207 INFO L225 Difference]: With dead ends: 3184 [2018-11-07 09:20:39,208 INFO L226 Difference]: Without dead ends: 1765 [2018-11-07 09:20:39,212 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 273 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:20:39,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2018-11-07 09:20:39,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1763. [2018-11-07 09:20:39,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2018-11-07 09:20:39,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2612 transitions. [2018-11-07 09:20:39,256 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2612 transitions. Word has length 273 [2018-11-07 09:20:39,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:20:39,256 INFO L480 AbstractCegarLoop]: Abstraction has 1763 states and 2612 transitions. [2018-11-07 09:20:39,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:20:39,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2612 transitions. [2018-11-07 09:20:39,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-11-07 09:20:39,269 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:20:39,269 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 09:20:39,270 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:20:39,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:20:39,270 INFO L82 PathProgramCache]: Analyzing trace with hash -900476236, now seen corresponding path program 1 times [2018-11-07 09:20:39,270 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:20:39,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:20:39,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:20:39,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:20:39,272 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:20:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:20:39,681 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:20:40,186 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 192 proven. 197 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 09:20:40,186 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:20:40,187 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:20:40,187 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 366 with the following transitions: [2018-11-07 09:20:40,188 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [631], [633], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 09:20:40,193 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:20:40,193 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:20:40,482 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:20:40,484 INFO L272 AbstractInterpreter]: Visited 121 different actions 349 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:20:40,523 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:20:40,525 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:20:40,525 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:20:40,525 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:20:40,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:20:40,542 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:20:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:20:40,682 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:20:41,296 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 398 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-11-07 09:20:41,297 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:20:41,592 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-07 09:20:42,304 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 281 proven. 92 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-11-07 09:20:42,335 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:20:42,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 09:20:42,336 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:20:42,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:20:42,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:20:42,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 09:20:42,338 INFO L87 Difference]: Start difference. First operand 1763 states and 2612 transitions. Second operand 9 states. [2018-11-07 09:20:46,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:20:46,823 INFO L93 Difference]: Finished difference Result 4237 states and 6745 transitions. [2018-11-07 09:20:46,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:20:46,824 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 365 [2018-11-07 09:20:46,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:20:46,841 INFO L225 Difference]: With dead ends: 4237 [2018-11-07 09:20:46,842 INFO L226 Difference]: Without dead ends: 2818 [2018-11-07 09:20:46,848 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 729 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2018-11-07 09:20:46,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states. [2018-11-07 09:20:46,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 2811. [2018-11-07 09:20:46,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2811 states. [2018-11-07 09:20:46,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 4086 transitions. [2018-11-07 09:20:46,928 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 4086 transitions. Word has length 365 [2018-11-07 09:20:46,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:20:46,929 INFO L480 AbstractCegarLoop]: Abstraction has 2811 states and 4086 transitions. [2018-11-07 09:20:46,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:20:46,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 4086 transitions. [2018-11-07 09:20:46,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2018-11-07 09:20:46,942 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:20:46,943 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2018-11-07 09:20:46,943 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:20:46,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:20:46,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1603881377, now seen corresponding path program 1 times [2018-11-07 09:20:46,944 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:20:46,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:20:46,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:20:46,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:20:46,945 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:20:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:20:47,568 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 348 proven. 200 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-11-07 09:20:47,568 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:20:47,568 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:20:47,569 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 482 with the following transitions: [2018-11-07 09:20:47,569 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [631], [633], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 09:20:47,580 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:20:47,581 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:20:47,898 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:20:47,898 INFO L272 AbstractInterpreter]: Visited 127 different actions 367 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:20:47,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:20:47,940 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:20:47,940 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:20:47,941 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:20:47,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:20:47,955 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:20:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:20:48,090 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:20:48,501 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 600 proven. 2 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2018-11-07 09:20:48,502 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:20:48,902 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 348 proven. 200 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-11-07 09:20:48,923 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:20:48,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 09:20:48,924 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:20:48,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:20:48,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:20:48,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-07 09:20:48,927 INFO L87 Difference]: Start difference. First operand 2811 states and 4086 transitions. Second operand 9 states. [2018-11-07 09:21:01,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:21:01,658 INFO L93 Difference]: Finished difference Result 11140 states and 16845 transitions. [2018-11-07 09:21:01,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-11-07 09:21:01,659 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 481 [2018-11-07 09:21:01,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:21:01,708 INFO L225 Difference]: With dead ends: 11140 [2018-11-07 09:21:01,708 INFO L226 Difference]: Without dead ends: 7326 [2018-11-07 09:21:01,776 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1043 GetRequests, 995 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=515, Invalid=1837, Unknown=0, NotChecked=0, Total=2352 [2018-11-07 09:21:01,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7326 states. [2018-11-07 09:21:01,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7326 to 7029. [2018-11-07 09:21:01,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7029 states. [2018-11-07 09:21:02,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7029 states to 7029 states and 7964 transitions. [2018-11-07 09:21:02,104 INFO L78 Accepts]: Start accepts. Automaton has 7029 states and 7964 transitions. Word has length 481 [2018-11-07 09:21:02,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:21:02,104 INFO L480 AbstractCegarLoop]: Abstraction has 7029 states and 7964 transitions. [2018-11-07 09:21:02,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:21:02,105 INFO L276 IsEmpty]: Start isEmpty. Operand 7029 states and 7964 transitions. [2018-11-07 09:21:02,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2018-11-07 09:21:02,138 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:21:02,138 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:21:02,139 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:21:02,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:21:02,140 INFO L82 PathProgramCache]: Analyzing trace with hash -188750168, now seen corresponding path program 1 times [2018-11-07 09:21:02,140 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:21:02,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:21:02,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:21:02,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:21:02,141 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:21:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:21:03,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1029 backedges. 363 proven. 345 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-11-07 09:21:03,652 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:21:03,652 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:21:03,652 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 753 with the following transitions: [2018-11-07 09:21:03,653 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [631], [633], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1256], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 09:21:03,667 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:21:03,667 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:21:04,205 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:21:04,206 INFO L272 AbstractInterpreter]: Visited 250 different actions 494 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:21:04,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:21:04,242 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:21:05,058 INFO L227 lantSequenceWeakener]: Weakened 749 states. On average, predicates are now at 77.65% of their original sizes. [2018-11-07 09:21:05,058 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:21:05,438 INFO L415 sIntCurrentIteration]: We unified 751 AI predicates to 751 [2018-11-07 09:21:05,439 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:21:05,439 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:21:05,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2018-11-07 09:21:05,439 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:21:05,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:21:05,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:21:05,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:21:05,443 INFO L87 Difference]: Start difference. First operand 7029 states and 7964 transitions. Second operand 10 states. [2018-11-07 09:22:23,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:22:23,838 INFO L93 Difference]: Finished difference Result 14057 states and 15971 transitions. [2018-11-07 09:22:23,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 09:22:23,838 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 752 [2018-11-07 09:22:23,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:22:23,871 INFO L225 Difference]: With dead ends: 14057 [2018-11-07 09:22:23,871 INFO L226 Difference]: Without dead ends: 7372 [2018-11-07 09:22:23,889 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 759 GetRequests, 743 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-11-07 09:22:23,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7372 states. [2018-11-07 09:22:24,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7372 to 7369. [2018-11-07 09:22:24,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7369 states. [2018-11-07 09:22:24,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7369 states to 7369 states and 8310 transitions. [2018-11-07 09:22:24,077 INFO L78 Accepts]: Start accepts. Automaton has 7369 states and 8310 transitions. Word has length 752 [2018-11-07 09:22:24,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:22:24,078 INFO L480 AbstractCegarLoop]: Abstraction has 7369 states and 8310 transitions. [2018-11-07 09:22:24,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 09:22:24,078 INFO L276 IsEmpty]: Start isEmpty. Operand 7369 states and 8310 transitions. [2018-11-07 09:22:24,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 862 [2018-11-07 09:22:24,103 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:22:24,104 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:22:24,105 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:22:24,105 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:22:24,105 INFO L82 PathProgramCache]: Analyzing trace with hash -2101421812, now seen corresponding path program 1 times [2018-11-07 09:22:24,105 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:22:24,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:22:24,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:22:24,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:22:24,107 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:22:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:22:24,763 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:22:25,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1495 backedges. 332 proven. 807 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2018-11-07 09:22:25,574 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:22:25,574 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:22:25,574 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 862 with the following transitions: [2018-11-07 09:22:25,574 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [631], [633], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [796], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1256], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 09:22:25,580 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:22:25,580 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:22:26,167 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:22:26,167 INFO L272 AbstractInterpreter]: Visited 259 different actions 772 times. Merged at 7 different actions 17 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 09:22:26,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:22:26,203 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:22:26,793 INFO L227 lantSequenceWeakener]: Weakened 858 states. On average, predicates are now at 80.39% of their original sizes. [2018-11-07 09:22:26,793 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:22:26,877 INFO L415 sIntCurrentIteration]: We unified 860 AI predicates to 860 [2018-11-07 09:22:26,877 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:22:26,877 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:22:26,878 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-11-07 09:22:26,878 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:22:26,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:22:26,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:22:26,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:22:26,879 INFO L87 Difference]: Start difference. First operand 7369 states and 8310 transitions. Second operand 9 states. Received shutdown request... [2018-11-07 09:22:27,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:22:27,860 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:22:27,866 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:22:27,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:22:27 BoogieIcfgContainer [2018-11-07 09:22:27,867 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:22:27,868 INFO L168 Benchmark]: Toolchain (without parser) took 233959.38 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -186.5 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-07 09:22:27,870 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 09:22:27,870 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1400.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. [2018-11-07 09:22:27,871 INFO L168 Benchmark]: Boogie Procedure Inliner took 205.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -863.3 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-11-07 09:22:27,872 INFO L168 Benchmark]: Boogie Preprocessor took 154.77 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 09:22:27,872 INFO L168 Benchmark]: RCFGBuilder took 6190.25 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 255.1 MB). Peak memory consumption was 255.1 MB. Max. memory is 7.1 GB. [2018-11-07 09:22:27,873 INFO L168 Benchmark]: TraceAbstraction took 226002.74 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 1.6 GB in the end (delta: 334.5 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-07 09:22:27,878 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1400.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 205.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -863.3 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 154.77 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 6190.25 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 255.1 MB). Peak memory consumption was 255.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226002.74 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 1.6 GB in the end (delta: 334.5 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 193]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 193). Cancelled while BasicCegarLoop was constructing difference of abstraction (7369states) and FLOYD_HOARE automaton (currently 6 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (113 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 225.9s OverallTime, 7 OverallIterations, 6 TraceHistogramMax, 210.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1143 SDtfs, 11320 SDslu, 1543 SDs, 0 SdLazy, 19302 SolverSat, 4871 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 178.3s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 3697 GetRequests, 3592 SyntacticMatches, 7 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7369occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.6s AbstIntTime, 5 AbstIntIterations, 3 AbstIntStrong, 0.9981401254916796 AbsIntWeakeningRatio, 0.05735528412108338 AbsIntAvgWeakeningVarsNumRemoved, 16.223579394583112 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 6 MinimizatonAttempts, 330 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 3809 NumberOfCodeBlocks, 3809 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 4644 ConstructedInterpolants, 0 QuantifiedInterpolants, 8486740 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1345 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 4722/6655 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown