java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label12_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 05:25:43,937 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 05:25:43,939 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 05:25:43,957 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 05:25:43,958 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 05:25:43,960 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 05:25:43,961 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 05:25:43,964 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 05:25:43,966 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 05:25:43,968 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 05:25:43,970 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 05:25:43,971 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 05:25:43,972 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 05:25:43,973 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 05:25:43,981 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 05:25:43,982 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 05:25:43,987 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 05:25:43,989 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 05:25:43,992 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 05:25:43,993 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 05:25:43,994 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 05:25:43,996 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 05:25:43,998 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 05:25:43,998 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 05:25:43,998 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 05:25:43,999 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 05:25:44,000 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 05:25:44,001 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 05:25:44,002 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 05:25:44,003 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 05:25:44,003 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 05:25:44,004 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 05:25:44,004 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 05:25:44,004 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 05:25:44,005 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 05:25:44,006 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 05:25:44,006 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 05:25:44,034 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 05:25:44,034 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 05:25:44,035 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 05:25:44,035 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 05:25:44,036 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 05:25:44,039 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 05:25:44,039 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 05:25:44,039 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 05:25:44,040 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 05:25:44,040 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 05:25:44,040 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 05:25:44,040 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 05:25:44,041 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 05:25:44,041 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 05:25:44,043 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 05:25:44,043 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 05:25:44,043 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 05:25:44,043 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 05:25:44,043 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 05:25:44,044 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 05:25:44,044 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 05:25:44,044 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 05:25:44,044 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 05:25:44,045 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 05:25:44,046 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 05:25:44,046 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 05:25:44,046 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:25:44,047 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 05:25:44,047 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 05:25:44,047 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 05:25:44,047 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 05:25:44,047 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 05:25:44,047 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 05:25:44,048 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 05:25:44,048 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 05:25:44,048 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 05:25:44,124 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 05:25:44,141 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 05:25:44,146 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 05:25:44,148 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 05:25:44,148 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 05:25:44,149 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label12_false-unreach-call_false-termination.c [2018-10-27 05:25:44,213 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bdb01018e/f2e7dc96fab04c57a44ebfbee3cf58e9/FLAG97bf7aad8 [2018-10-27 05:25:44,852 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 05:25:44,855 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label12_false-unreach-call_false-termination.c [2018-10-27 05:25:44,877 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bdb01018e/f2e7dc96fab04c57a44ebfbee3cf58e9/FLAG97bf7aad8 [2018-10-27 05:25:44,893 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bdb01018e/f2e7dc96fab04c57a44ebfbee3cf58e9 [2018-10-27 05:25:44,905 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 05:25:44,907 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 05:25:44,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 05:25:44,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 05:25:44,912 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 05:25:44,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:25:44" (1/1) ... [2018-10-27 05:25:44,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c671f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:44, skipping insertion in model container [2018-10-27 05:25:44,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:25:44" (1/1) ... [2018-10-27 05:25:44,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 05:25:44,991 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 05:25:45,484 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:25:45,488 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 05:25:45,621 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:25:45,656 INFO L193 MainTranslator]: Completed translation [2018-10-27 05:25:45,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:45 WrapperNode [2018-10-27 05:25:45,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 05:25:45,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 05:25:45,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 05:25:45,658 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 05:25:45,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:45" (1/1) ... [2018-10-27 05:25:45,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:45" (1/1) ... [2018-10-27 05:25:45,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 05:25:45,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 05:25:45,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 05:25:45,911 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 05:25:45,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:45" (1/1) ... [2018-10-27 05:25:45,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:45" (1/1) ... [2018-10-27 05:25:45,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:45" (1/1) ... [2018-10-27 05:25:45,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:45" (1/1) ... [2018-10-27 05:25:45,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:45" (1/1) ... [2018-10-27 05:25:46,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:45" (1/1) ... [2018-10-27 05:25:46,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:45" (1/1) ... [2018-10-27 05:25:46,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 05:25:46,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 05:25:46,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 05:25:46,047 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 05:25:46,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:25:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 05:25:46,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 05:25:46,120 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 05:25:46,120 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 05:25:46,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 05:25:46,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 05:25:46,121 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 05:25:46,121 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 05:25:49,724 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 05:25:49,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:25:49 BoogieIcfgContainer [2018-10-27 05:25:49,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 05:25:49,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 05:25:49,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 05:25:49,730 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 05:25:49,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:25:44" (1/3) ... [2018-10-27 05:25:49,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2a8710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:25:49, skipping insertion in model container [2018-10-27 05:25:49,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:45" (2/3) ... [2018-10-27 05:25:49,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2a8710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:25:49, skipping insertion in model container [2018-10-27 05:25:49,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:25:49" (3/3) ... [2018-10-27 05:25:49,734 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label12_false-unreach-call_false-termination.c [2018-10-27 05:25:49,744 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 05:25:49,752 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 05:25:49,771 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 05:25:49,808 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 05:25:49,808 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 05:25:49,808 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 05:25:49,809 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 05:25:49,809 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 05:25:49,809 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 05:25:49,809 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 05:25:49,809 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 05:25:49,836 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-27 05:25:49,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-27 05:25:49,844 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:25:49,845 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:25:49,847 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:25:49,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:25:49,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1289249233, now seen corresponding path program 1 times [2018-10-27 05:25:49,855 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:25:49,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:25:49,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:25:49,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:25:49,910 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:25:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:25:50,208 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 05:25:50,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:25:50,228 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:25:50,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 05:25:50,228 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:25:50,233 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:25:50,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:25:50,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:25:50,248 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-27 05:25:52,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:25:52,102 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-27 05:25:52,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:25:52,105 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-10-27 05:25:52,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:25:52,126 INFO L225 Difference]: With dead ends: 691 [2018-10-27 05:25:52,126 INFO L226 Difference]: Without dead ends: 434 [2018-10-27 05:25:52,135 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:25:52,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-27 05:25:52,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-27 05:25:52,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-27 05:25:52,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-27 05:25:52,232 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 15 [2018-10-27 05:25:52,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:25:52,233 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-27 05:25:52,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:25:52,233 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-27 05:25:52,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-27 05:25:52,238 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:25:52,239 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 05:25:52,239 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:25:52,239 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:25:52,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1032198988, now seen corresponding path program 1 times [2018-10-27 05:25:52,240 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:25:52,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:25:52,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:25:52,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:25:52,241 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:25:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:25:52,590 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:25:52,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:25:52,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 05:25:52,591 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:25:52,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:25:52,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:25:52,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:25:52,594 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-27 05:25:56,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:25:56,238 INFO L93 Difference]: Finished difference Result 1587 states and 2933 transitions. [2018-10-27 05:25:56,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 05:25:56,239 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2018-10-27 05:25:56,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:25:56,250 INFO L225 Difference]: With dead ends: 1587 [2018-10-27 05:25:56,250 INFO L226 Difference]: Without dead ends: 1159 [2018-10-27 05:25:56,255 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:25:56,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2018-10-27 05:25:56,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1152. [2018-10-27 05:25:56,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1152 states. [2018-10-27 05:25:56,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1885 transitions. [2018-10-27 05:25:56,318 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1885 transitions. Word has length 85 [2018-10-27 05:25:56,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:25:56,318 INFO L481 AbstractCegarLoop]: Abstraction has 1152 states and 1885 transitions. [2018-10-27 05:25:56,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:25:56,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1885 transitions. [2018-10-27 05:25:56,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-27 05:25:56,331 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:25:56,332 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 05:25:56,332 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:25:56,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:25:56,333 INFO L82 PathProgramCache]: Analyzing trace with hash 273751564, now seen corresponding path program 1 times [2018-10-27 05:25:56,333 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:25:56,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:25:56,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:25:56,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:25:56,334 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:25:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:25:56,952 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:25:56,952 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:25:56,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 05:25:56,953 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:25:56,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:25:56,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:25:56,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:25:56,955 INFO L87 Difference]: Start difference. First operand 1152 states and 1885 transitions. Second operand 6 states. [2018-10-27 05:26:01,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:26:01,785 INFO L93 Difference]: Finished difference Result 4069 states and 6749 transitions. [2018-10-27 05:26:01,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 05:26:01,786 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2018-10-27 05:26:01,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:26:01,806 INFO L225 Difference]: With dead ends: 4069 [2018-10-27 05:26:01,806 INFO L226 Difference]: Without dead ends: 2923 [2018-10-27 05:26:01,817 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 05:26:01,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2018-10-27 05:26:01,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 2805. [2018-10-27 05:26:01,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2805 states. [2018-10-27 05:26:01,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 3985 transitions. [2018-10-27 05:26:01,904 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 3985 transitions. Word has length 181 [2018-10-27 05:26:01,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:26:01,905 INFO L481 AbstractCegarLoop]: Abstraction has 2805 states and 3985 transitions. [2018-10-27 05:26:01,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:26:01,906 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 3985 transitions. [2018-10-27 05:26:01,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-10-27 05:26:01,916 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:26:01,917 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 05:26:01,917 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:26:01,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:26:01,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1710923381, now seen corresponding path program 1 times [2018-10-27 05:26:01,918 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:26:01,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:26:01,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:26:01,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:26:01,919 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:26:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:26:02,224 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 05:26:02,546 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 24 proven. 132 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-10-27 05:26:02,547 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:26:02,547 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:26:02,548 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 319 with the following transitions: [2018-10-27 05:26:02,551 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:26:02,644 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:26:02,644 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:26:03,404 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:26:03,406 INFO L272 AbstractInterpreter]: Visited 158 different actions 158 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 05:26:03,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:26:03,449 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:26:04,282 INFO L227 lantSequenceWeakener]: Weakened 306 states. On average, predicates are now at 77.29% of their original sizes. [2018-10-27 05:26:04,283 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:26:04,519 INFO L415 sIntCurrentIteration]: We unified 317 AI predicates to 317 [2018-10-27 05:26:04,520 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:26:04,521 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:26:04,521 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-10-27 05:26:04,521 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:26:04,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:26:04,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:26:04,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:26:04,523 INFO L87 Difference]: Start difference. First operand 2805 states and 3985 transitions. Second operand 6 states. [2018-10-27 05:26:27,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:26:27,956 INFO L93 Difference]: Finished difference Result 5789 states and 8184 transitions. [2018-10-27 05:26:27,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 05:26:27,956 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 318 [2018-10-27 05:26:27,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:26:27,973 INFO L225 Difference]: With dead ends: 5789 [2018-10-27 05:26:27,973 INFO L226 Difference]: Without dead ends: 2990 [2018-10-27 05:26:27,983 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 318 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 05:26:27,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2018-10-27 05:26:28,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 2988. [2018-10-27 05:26:28,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2988 states. [2018-10-27 05:26:28,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2988 states to 2988 states and 4176 transitions. [2018-10-27 05:26:28,079 INFO L78 Accepts]: Start accepts. Automaton has 2988 states and 4176 transitions. Word has length 318 [2018-10-27 05:26:28,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:26:28,080 INFO L481 AbstractCegarLoop]: Abstraction has 2988 states and 4176 transitions. [2018-10-27 05:26:28,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:26:28,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2988 states and 4176 transitions. [2018-10-27 05:26:28,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-10-27 05:26:28,093 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:26:28,093 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 05:26:28,094 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:26:28,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:26:28,095 INFO L82 PathProgramCache]: Analyzing trace with hash -585018255, now seen corresponding path program 1 times [2018-10-27 05:26:28,095 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:26:28,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:26:28,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:26:28,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:26:28,097 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:26:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:26:28,712 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 107 proven. 79 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-27 05:26:28,713 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:26:28,713 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:26:28,713 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 333 with the following transitions: [2018-10-27 05:26:28,714 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:26:28,720 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:26:28,721 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:26:28,912 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:26:28,912 INFO L272 AbstractInterpreter]: Visited 161 different actions 315 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 05:26:28,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:26:28,940 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:26:29,271 INFO L227 lantSequenceWeakener]: Weakened 329 states. On average, predicates are now at 77.33% of their original sizes. [2018-10-27 05:26:29,271 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:26:29,715 INFO L415 sIntCurrentIteration]: We unified 331 AI predicates to 331 [2018-10-27 05:26:29,716 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:26:29,716 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:26:29,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-10-27 05:26:29,716 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:26:29,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 05:26:29,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 05:26:29,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 05:26:29,717 INFO L87 Difference]: Start difference. First operand 2988 states and 4176 transitions. Second operand 10 states. [2018-10-27 05:27:36,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:27:36,645 INFO L93 Difference]: Finished difference Result 6685 states and 9593 transitions. [2018-10-27 05:27:36,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-27 05:27:36,646 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 332 [2018-10-27 05:27:36,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:27:36,665 INFO L225 Difference]: With dead ends: 6685 [2018-10-27 05:27:36,665 INFO L226 Difference]: Without dead ends: 3886 [2018-10-27 05:27:36,677 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 340 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-10-27 05:27:36,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3886 states. [2018-10-27 05:27:36,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3886 to 3883. [2018-10-27 05:27:36,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3883 states. [2018-10-27 05:27:36,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3883 states to 3883 states and 5173 transitions. [2018-10-27 05:27:36,774 INFO L78 Accepts]: Start accepts. Automaton has 3883 states and 5173 transitions. Word has length 332 [2018-10-27 05:27:36,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:27:36,774 INFO L481 AbstractCegarLoop]: Abstraction has 3883 states and 5173 transitions. [2018-10-27 05:27:36,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 05:27:36,775 INFO L276 IsEmpty]: Start isEmpty. Operand 3883 states and 5173 transitions. [2018-10-27 05:27:36,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2018-10-27 05:27:36,790 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:27:36,790 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-10-27 05:27:36,791 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:27:36,791 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:27:36,791 INFO L82 PathProgramCache]: Analyzing trace with hash -452110145, now seen corresponding path program 1 times [2018-10-27 05:27:36,792 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:27:36,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:27:36,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:27:36,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:27:36,793 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:27:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:27:37,119 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-27 05:27:37,510 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 111 proven. 211 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2018-10-27 05:27:37,510 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:27:37,510 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:27:37,511 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 438 with the following transitions: [2018-10-27 05:27:37,511 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [530], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:27:37,516 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:27:37,516 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:27:37,662 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:27:37,662 INFO L272 AbstractInterpreter]: Visited 162 different actions 318 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 05:27:37,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:27:37,668 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:27:38,045 INFO L227 lantSequenceWeakener]: Weakened 434 states. On average, predicates are now at 77.35% of their original sizes. [2018-10-27 05:27:38,045 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:27:38,149 INFO L415 sIntCurrentIteration]: We unified 436 AI predicates to 436 [2018-10-27 05:27:38,149 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:27:38,149 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:27:38,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2018-10-27 05:27:38,150 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:27:38,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 05:27:38,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 05:27:38,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 05:27:38,151 INFO L87 Difference]: Start difference. First operand 3883 states and 5173 transitions. Second operand 10 states. [2018-10-27 05:28:10,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:28:10,943 INFO L93 Difference]: Finished difference Result 7576 states and 10151 transitions. [2018-10-27 05:28:10,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 05:28:10,944 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 437 [2018-10-27 05:28:10,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:28:10,964 INFO L225 Difference]: With dead ends: 7576 [2018-10-27 05:28:10,964 INFO L226 Difference]: Without dead ends: 3882 [2018-10-27 05:28:10,976 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 444 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-10-27 05:28:10,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3882 states. [2018-10-27 05:28:11,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3882 to 3879. [2018-10-27 05:28:11,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3879 states. [2018-10-27 05:28:11,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3879 states to 3879 states and 5150 transitions. [2018-10-27 05:28:11,062 INFO L78 Accepts]: Start accepts. Automaton has 3879 states and 5150 transitions. Word has length 437 [2018-10-27 05:28:11,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:28:11,062 INFO L481 AbstractCegarLoop]: Abstraction has 3879 states and 5150 transitions. [2018-10-27 05:28:11,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 05:28:11,063 INFO L276 IsEmpty]: Start isEmpty. Operand 3879 states and 5150 transitions. [2018-10-27 05:28:11,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2018-10-27 05:28:11,077 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:28:11,078 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:28:11,078 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:28:11,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:28:11,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1120438000, now seen corresponding path program 1 times [2018-10-27 05:28:11,079 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:28:11,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:11,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:28:11,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:11,080 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:28:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:28:11,432 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-27 05:28:11,654 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 180 proven. 285 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-10-27 05:28:11,655 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:28:11,655 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:28:11,655 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 469 with the following transitions: [2018-10-27 05:28:11,655 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:28:11,662 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:28:11,662 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:28:16,443 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:28:16,444 INFO L272 AbstractInterpreter]: Visited 162 different actions 485 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-27 05:28:16,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:28:16,453 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:28:17,285 INFO L227 lantSequenceWeakener]: Weakened 465 states. On average, predicates are now at 80% of their original sizes. [2018-10-27 05:28:17,286 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:28:17,386 INFO L415 sIntCurrentIteration]: We unified 467 AI predicates to 467 [2018-10-27 05:28:17,386 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:28:17,387 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:28:17,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-10-27 05:28:17,387 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:28:17,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 05:28:17,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 05:28:17,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:28:17,388 INFO L87 Difference]: Start difference. First operand 3879 states and 5150 transitions. Second operand 9 states. [2018-10-27 05:28:48,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:28:48,977 INFO L93 Difference]: Finished difference Result 8226 states and 11306 transitions. [2018-10-27 05:28:48,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 05:28:48,978 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 468 [2018-10-27 05:28:48,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:28:48,997 INFO L225 Difference]: With dead ends: 8226 [2018-10-27 05:28:48,998 INFO L226 Difference]: Without dead ends: 4721 [2018-10-27 05:28:49,009 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 474 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-10-27 05:28:49,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4721 states. [2018-10-27 05:28:49,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4721 to 4692. [2018-10-27 05:28:49,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4692 states. [2018-10-27 05:28:49,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 6152 transitions. [2018-10-27 05:28:49,109 INFO L78 Accepts]: Start accepts. Automaton has 4692 states and 6152 transitions. Word has length 468 [2018-10-27 05:28:49,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:28:49,110 INFO L481 AbstractCegarLoop]: Abstraction has 4692 states and 6152 transitions. [2018-10-27 05:28:49,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 05:28:49,110 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 6152 transitions. [2018-10-27 05:28:49,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2018-10-27 05:28:49,133 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:28:49,134 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:28:49,134 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:28:49,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:28:49,135 INFO L82 PathProgramCache]: Analyzing trace with hash -681151850, now seen corresponding path program 1 times [2018-10-27 05:28:49,135 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:28:49,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:49,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:28:49,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:49,136 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:28:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:28:49,606 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 138 proven. 258 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2018-10-27 05:28:49,606 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:28:49,607 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:28:49,607 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 518 with the following transitions: [2018-10-27 05:28:49,607 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:28:49,610 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:28:49,611 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:28:50,211 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:28:50,212 INFO L272 AbstractInterpreter]: Visited 164 different actions 660 times. Merged at 9 different actions 40 times. Widened at 1 different actions 1 times. Found 10 fixpoints after 4 different actions. Largest state had 24 variables. [2018-10-27 05:28:50,250 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:28:50,252 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:28:50,252 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:28:50,252 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 05:28:50,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:28:50,272 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:28:50,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:28:50,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:28:51,032 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 600 proven. 2 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2018-10-27 05:28:51,033 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:28:51,893 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 138 proven. 258 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2018-10-27 05:28:52,022 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:28:52,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-27 05:28:52,022 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:28:52,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 05:28:52,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 05:28:52,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-10-27 05:28:52,025 INFO L87 Difference]: Start difference. First operand 4692 states and 6152 transitions. Second operand 9 states. [2018-10-27 05:28:59,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:28:59,475 INFO L93 Difference]: Finished difference Result 10442 states and 14526 transitions. [2018-10-27 05:28:59,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-27 05:28:59,481 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 517 [2018-10-27 05:28:59,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:28:59,505 INFO L225 Difference]: With dead ends: 10442 [2018-10-27 05:28:59,505 INFO L226 Difference]: Without dead ends: 5755 [2018-10-27 05:28:59,531 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1084 GetRequests, 1051 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2018-10-27 05:28:59,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5755 states. [2018-10-27 05:28:59,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5755 to 5339. [2018-10-27 05:28:59,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5339 states. [2018-10-27 05:28:59,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5339 states to 5339 states and 6774 transitions. [2018-10-27 05:28:59,685 INFO L78 Accepts]: Start accepts. Automaton has 5339 states and 6774 transitions. Word has length 517 [2018-10-27 05:28:59,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:28:59,685 INFO L481 AbstractCegarLoop]: Abstraction has 5339 states and 6774 transitions. [2018-10-27 05:28:59,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 05:28:59,685 INFO L276 IsEmpty]: Start isEmpty. Operand 5339 states and 6774 transitions. [2018-10-27 05:28:59,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2018-10-27 05:28:59,705 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:28:59,706 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 3, 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] [2018-10-27 05:28:59,706 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:28:59,706 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:28:59,707 INFO L82 PathProgramCache]: Analyzing trace with hash 61558385, now seen corresponding path program 1 times [2018-10-27 05:28:59,707 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:28:59,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:59,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:28:59,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:59,708 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:28:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:29:00,474 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-27 05:29:01,101 WARN L179 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-27 05:29:01,499 WARN L179 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-10-27 05:29:02,116 WARN L179 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-10-27 05:29:02,742 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 359 proven. 458 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-10-27 05:29:02,742 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:29:02,742 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:29:02,743 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 575 with the following transitions: [2018-10-27 05:29:02,743 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:29:02,747 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:29:02,747 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:29:14,951 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:29:14,951 INFO L272 AbstractInterpreter]: Visited 164 different actions 650 times. Merged at 8 different actions 30 times. Never widened. Found 8 fixpoints after 5 different actions. Largest state had 24 variables. [2018-10-27 05:29:14,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:29:14,960 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:29:14,960 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:29:14,960 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 05:29:14,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:29:14,969 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:29:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:29:15,123 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:29:15,556 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-27 05:29:15,949 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 736 proven. 2 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2018-10-27 05:29:15,949 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:29:16,475 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-10-27 05:29:17,025 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 353 proven. 112 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2018-10-27 05:29:17,047 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:29:17,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-10-27 05:29:17,048 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:29:17,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-27 05:29:17,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-27 05:29:17,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-10-27 05:29:17,050 INFO L87 Difference]: Start difference. First operand 5339 states and 6774 transitions. Second operand 17 states. [2018-10-27 05:29:24,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:29:24,773 INFO L93 Difference]: Finished difference Result 11296 states and 14859 transitions. [2018-10-27 05:29:24,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-27 05:29:24,774 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 574 [2018-10-27 05:29:24,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:29:24,799 INFO L225 Difference]: With dead ends: 11296 [2018-10-27 05:29:24,800 INFO L226 Difference]: Without dead ends: 5206 [2018-10-27 05:29:24,828 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1206 GetRequests, 1159 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=521, Invalid=1735, Unknown=0, NotChecked=0, Total=2256 [2018-10-27 05:29:24,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5206 states. [2018-10-27 05:29:24,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5206 to 5047. [2018-10-27 05:29:24,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5047 states. [2018-10-27 05:29:24,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5047 states to 5047 states and 5946 transitions. [2018-10-27 05:29:24,969 INFO L78 Accepts]: Start accepts. Automaton has 5047 states and 5946 transitions. Word has length 574 [2018-10-27 05:29:24,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:29:24,970 INFO L481 AbstractCegarLoop]: Abstraction has 5047 states and 5946 transitions. [2018-10-27 05:29:24,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-27 05:29:24,970 INFO L276 IsEmpty]: Start isEmpty. Operand 5047 states and 5946 transitions. [2018-10-27 05:29:24,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2018-10-27 05:29:24,987 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:29:24,987 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-10-27 05:29:24,988 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:29:24,988 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:29:24,988 INFO L82 PathProgramCache]: Analyzing trace with hash 747160967, now seen corresponding path program 1 times [2018-10-27 05:29:24,988 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:29:24,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:24,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:29:24,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:29:24,990 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:29:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:29:26,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 284 proven. 513 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2018-10-27 05:29:26,478 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:29:26,478 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:29:26,478 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 649 with the following transitions: [2018-10-27 05:29:26,479 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:29:26,483 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:29:26,483 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:29:32,039 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:29:32,040 INFO L272 AbstractInterpreter]: Visited 192 different actions 767 times. Merged at 10 different actions 35 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 4 different actions. Largest state had 24 variables. [2018-10-27 05:29:32,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:29:32,049 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:29:32,049 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:29:32,049 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:29:32,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:29:32,059 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:29:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:29:32,233 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:29:32,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 857 proven. 2 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2018-10-27 05:29:32,679 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:29:33,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 282 proven. 228 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2018-10-27 05:29:33,587 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:29:33,587 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 20 [2018-10-27 05:29:33,587 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:29:33,588 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-27 05:29:33,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-27 05:29:33,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2018-10-27 05:29:33,589 INFO L87 Difference]: Start difference. First operand 5047 states and 5946 transitions. Second operand 17 states. [2018-10-27 05:29:38,483 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-10-27 05:29:38,721 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2018-10-27 05:29:39,021 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2018-10-27 05:29:40,046 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2018-10-27 05:29:40,472 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2018-10-27 05:29:40,626 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 Received shutdown request... [2018-10-27 05:29:42,088 WARN L187 SmtUtils]: Removed 2 from assertion stack [2018-10-27 05:29:42,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-27 05:29:42,089 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 05:29:42,093 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 05:29:42,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 05:29:42 BoogieIcfgContainer [2018-10-27 05:29:42,093 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 05:29:42,094 INFO L168 Benchmark]: Toolchain (without parser) took 237188.14 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-27 05:29:42,095 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 05:29:42,096 INFO L168 Benchmark]: CACSL2BoogieTranslator took 749.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-27 05:29:42,096 INFO L168 Benchmark]: Boogie Procedure Inliner took 252.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 733.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -832.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-27 05:29:42,097 INFO L168 Benchmark]: Boogie Preprocessor took 136.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-10-27 05:29:42,098 INFO L168 Benchmark]: RCFGBuilder took 3678.66 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 131.4 MB). Peak memory consumption was 131.4 MB. Max. memory is 7.1 GB. [2018-10-27 05:29:42,098 INFO L168 Benchmark]: TraceAbstraction took 232367.00 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.7 GB in the end (delta: -648.0 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-27 05:29:42,104 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 749.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 252.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 733.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -832.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3678.66 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 131.4 MB). Peak memory consumption was 131.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232367.00 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.7 GB in the end (delta: -648.0 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 28]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 28). Cancelled while BasicCegarLoop was constructing difference of abstraction (5047states) and FLOYD_HOARE automaton (currently 45 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 56. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 232.2s OverallTime, 10 OverallIterations, 6 TraceHistogramMax, 189.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1513 SDtfs, 15930 SDslu, 2874 SDs, 0 SdLazy, 24101 SolverSat, 4233 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 145.1s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 5274 GetRequests, 5063 SyntacticMatches, 9 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1844 ImplicationChecksByTransitivity, 10.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5339occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 24.5s AbstIntTime, 7 AbstIntIterations, 4 AbstIntStrong, 0.9971761771280658 AbsIntWeakeningRatio, 0.09026434558349453 AbsIntAvgWeakeningVarsNumRemoved, 16.031592520954224 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 737 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 10.6s InterpolantComputationTime, 5314 NumberOfCodeBlocks, 5314 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 7037 ConstructedInterpolants, 0 QuantifiedInterpolants, 16910887 SizeOfPredicates, 13 NumberOfNonLiveVariables, 2627 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 16 InterpolantComputations, 3 PerfectInterpolantSequences, 7888/10428 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown