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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label07_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 03:01:12,961 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 03:01:12,964 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 03:01:12,982 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 03:01:12,983 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 03:01:12,984 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 03:01:12,985 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 03:01:12,987 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 03:01:12,990 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 03:01:12,991 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 03:01:12,992 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 03:01:12,992 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 03:01:12,994 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 03:01:12,995 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 03:01:12,999 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 03:01:13,000 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 03:01:13,001 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 03:01:13,003 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 03:01:13,013 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 03:01:13,015 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 03:01:13,016 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 03:01:13,021 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 03:01:13,024 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 03:01:13,024 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 03:01:13,024 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 03:01:13,028 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 03:01:13,029 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 03:01:13,029 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 03:01:13,032 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 03:01:13,035 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 03:01:13,035 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 03:01:13,036 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 03:01:13,037 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 03:01:13,037 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 03:01:13,038 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 03:01:13,039 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 03:01:13,040 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 03:01:13,063 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 03:01:13,063 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 03:01:13,064 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 03:01:13,065 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 03:01:13,065 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 03:01:13,065 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 03:01:13,065 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 03:01:13,066 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 03:01:13,066 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 03:01:13,066 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 03:01:13,066 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 03:01:13,066 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 03:01:13,067 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 03:01:13,067 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 03:01:13,068 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 03:01:13,068 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 03:01:13,068 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 03:01:13,068 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 03:01:13,068 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 03:01:13,069 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 03:01:13,069 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 03:01:13,069 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 03:01:13,069 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 03:01:13,069 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 03:01:13,070 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:01:13,070 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 03:01:13,070 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 03:01:13,070 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 03:01:13,071 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 03:01:13,071 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 03:01:13,071 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 03:01:13,071 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 03:01:13,071 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 03:01:13,071 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 03:01:13,116 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 03:01:13,135 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 03:01:13,139 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 03:01:13,142 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 03:01:13,142 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 03:01:13,143 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label07_true-unreach-call_false-termination.c [2018-10-27 03:01:13,213 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fa09e16f5/ce03670f35d445249bf38cc01c22b0b3/FLAG92cca4ea3 [2018-10-27 03:01:13,789 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 03:01:13,790 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label07_true-unreach-call_false-termination.c [2018-10-27 03:01:13,813 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fa09e16f5/ce03670f35d445249bf38cc01c22b0b3/FLAG92cca4ea3 [2018-10-27 03:01:13,837 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fa09e16f5/ce03670f35d445249bf38cc01c22b0b3 [2018-10-27 03:01:13,852 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 03:01:13,854 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 03:01:13,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 03:01:13,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 03:01:13,858 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 03:01:13,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:01:13" (1/1) ... [2018-10-27 03:01:13,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11290b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:13, skipping insertion in model container [2018-10-27 03:01:13,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:01:13" (1/1) ... [2018-10-27 03:01:13,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 03:01:13,953 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 03:01:14,453 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:01:14,463 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 03:01:14,628 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:01:14,652 INFO L193 MainTranslator]: Completed translation [2018-10-27 03:01:14,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:14 WrapperNode [2018-10-27 03:01:14,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 03:01:14,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 03:01:14,654 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 03:01:14,654 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 03:01:14,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:14" (1/1) ... [2018-10-27 03:01:14,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:14" (1/1) ... [2018-10-27 03:01:14,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 03:01:14,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 03:01:14,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 03:01:14,890 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 03:01:14,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:14" (1/1) ... [2018-10-27 03:01:14,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:14" (1/1) ... [2018-10-27 03:01:14,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:14" (1/1) ... [2018-10-27 03:01:14,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:14" (1/1) ... [2018-10-27 03:01:14,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:14" (1/1) ... [2018-10-27 03:01:14,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:14" (1/1) ... [2018-10-27 03:01:14,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:14" (1/1) ... [2018-10-27 03:01:14,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 03:01:14,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 03:01:14,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 03:01:14,998 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 03:01:14,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:14" (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 03:01:15,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 03:01:15,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 03:01:15,085 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 03:01:15,085 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 03:01:15,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 03:01:15,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 03:01:15,086 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 03:01:15,086 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 03:01:18,892 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 03:01:18,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:01:18 BoogieIcfgContainer [2018-10-27 03:01:18,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 03:01:18,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 03:01:18,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 03:01:18,898 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 03:01:18,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:01:13" (1/3) ... [2018-10-27 03:01:18,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edb8343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:01:18, skipping insertion in model container [2018-10-27 03:01:18,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:01:14" (2/3) ... [2018-10-27 03:01:18,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edb8343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:01:18, skipping insertion in model container [2018-10-27 03:01:18,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:01:18" (3/3) ... [2018-10-27 03:01:18,902 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label07_true-unreach-call_false-termination.c [2018-10-27 03:01:18,910 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 03:01:18,920 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 03:01:18,938 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 03:01:18,979 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 03:01:18,979 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 03:01:18,979 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 03:01:18,979 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 03:01:18,980 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 03:01:18,980 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 03:01:18,980 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 03:01:18,980 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 03:01:19,017 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-27 03:01:19,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-27 03:01:19,026 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:01:19,027 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:01:19,030 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:01:19,035 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:01:19,036 INFO L82 PathProgramCache]: Analyzing trace with hash -989245532, now seen corresponding path program 1 times [2018-10-27 03:01:19,038 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:01:19,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:01:19,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:01:19,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:01:19,091 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:01:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:01:19,534 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-27 03:01:19,559 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 03:01:19,561 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:01:19,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 03:01:19,562 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:01:19,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 03:01:19,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 03:01:19,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:01:19,588 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-10-27 03:01:23,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:01:23,107 INFO L93 Difference]: Finished difference Result 894 states and 1610 transitions. [2018-10-27 03:01:23,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 03:01:23,110 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-10-27 03:01:23,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:01:23,134 INFO L225 Difference]: With dead ends: 894 [2018-10-27 03:01:23,135 INFO L226 Difference]: Without dead ends: 633 [2018-10-27 03:01:23,144 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:01:23,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-10-27 03:01:23,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 434. [2018-10-27 03:01:23,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-27 03:01:23,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 662 transitions. [2018-10-27 03:01:23,241 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 662 transitions. Word has length 54 [2018-10-27 03:01:23,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:01:23,242 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 662 transitions. [2018-10-27 03:01:23,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 03:01:23,242 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 662 transitions. [2018-10-27 03:01:23,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-27 03:01:23,256 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:01:23,257 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:23,257 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:01:23,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:01:23,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1614354860, now seen corresponding path program 1 times [2018-10-27 03:01:23,260 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:01:23,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:01:23,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:01:23,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:01:23,262 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:01:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:01:23,578 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:01:23,579 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:01:23,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 03:01:23,579 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:01:23,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 03:01:23,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 03:01:23,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:01:23,584 INFO L87 Difference]: Start difference. First operand 434 states and 662 transitions. Second operand 4 states. [2018-10-27 03:01:26,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:01:26,292 INFO L93 Difference]: Finished difference Result 1594 states and 2533 transitions. [2018-10-27 03:01:26,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 03:01:26,304 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2018-10-27 03:01:26,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:01:26,312 INFO L225 Difference]: With dead ends: 1594 [2018-10-27 03:01:26,312 INFO L226 Difference]: Without dead ends: 780 [2018-10-27 03:01:26,320 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:01:26,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2018-10-27 03:01:26,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 780. [2018-10-27 03:01:26,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 780 states. [2018-10-27 03:01:26,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1152 transitions. [2018-10-27 03:01:26,372 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1152 transitions. Word has length 138 [2018-10-27 03:01:26,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:01:26,373 INFO L481 AbstractCegarLoop]: Abstraction has 780 states and 1152 transitions. [2018-10-27 03:01:26,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 03:01:26,373 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1152 transitions. [2018-10-27 03:01:26,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-27 03:01:26,382 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:01:26,382 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2018-10-27 03:01:26,383 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:01:26,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:01:26,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1391925776, now seen corresponding path program 1 times [2018-10-27 03:01:26,384 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:01:26,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:01:26,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:01:26,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:01:26,385 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:01:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:01:26,690 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-27 03:01:26,690 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:01:26,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 03:01:26,691 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:01:26,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 03:01:26,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 03:01:26,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:01:26,692 INFO L87 Difference]: Start difference. First operand 780 states and 1152 transitions. Second operand 4 states. [2018-10-27 03:01:31,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:01:31,554 INFO L93 Difference]: Finished difference Result 3018 states and 4610 transitions. [2018-10-27 03:01:31,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 03:01:31,555 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 224 [2018-10-27 03:01:31,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:01:31,579 INFO L225 Difference]: With dead ends: 3018 [2018-10-27 03:01:31,579 INFO L226 Difference]: Without dead ends: 2244 [2018-10-27 03:01:31,595 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:01:31,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2244 states. [2018-10-27 03:01:31,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2244 to 2244. [2018-10-27 03:01:31,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2244 states. [2018-10-27 03:01:31,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 3149 transitions. [2018-10-27 03:01:31,694 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 3149 transitions. Word has length 224 [2018-10-27 03:01:31,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:01:31,695 INFO L481 AbstractCegarLoop]: Abstraction has 2244 states and 3149 transitions. [2018-10-27 03:01:31,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 03:01:31,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 3149 transitions. [2018-10-27 03:01:31,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-10-27 03:01:31,713 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:01:31,713 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 03:01:31,714 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:01:31,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:01:31,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1136291269, now seen corresponding path program 1 times [2018-10-27 03:01:31,714 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:01:31,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:01:31,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:01:31,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:01:31,716 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:01:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:01:32,335 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 94 proven. 108 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 03:01:32,336 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:01:32,336 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:01:32,337 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 320 with the following transitions: [2018-10-27 03:01:32,340 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [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], [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], [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 03:01:32,417 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:01:32,417 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:01:35,089 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:01:39,566 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:01:39,568 INFO L272 AbstractInterpreter]: Visited 157 different actions 157 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 03:01:39,585 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:01:39,585 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:01:42,962 INFO L227 lantSequenceWeakener]: Weakened 311 states. On average, predicates are now at 77.86% of their original sizes. [2018-10-27 03:01:42,963 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:01:43,593 INFO L415 sIntCurrentIteration]: We unified 318 AI predicates to 318 [2018-10-27 03:01:43,593 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:01:43,594 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:01:43,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-10-27 03:01:43,595 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:01:43,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 03:01:43,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 03:01:43,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:01:43,596 INFO L87 Difference]: Start difference. First operand 2244 states and 3149 transitions. Second operand 8 states. [2018-10-27 03:01:59,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:01:59,392 INFO L93 Difference]: Finished difference Result 4667 states and 6526 transitions. [2018-10-27 03:01:59,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 03:01:59,393 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 319 [2018-10-27 03:01:59,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:01:59,415 INFO L225 Difference]: With dead ends: 4667 [2018-10-27 03:01:59,415 INFO L226 Difference]: Without dead ends: 2429 [2018-10-27 03:01:59,430 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 320 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 03:01:59,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2018-10-27 03:01:59,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2427. [2018-10-27 03:01:59,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2427 states. [2018-10-27 03:01:59,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 3340 transitions. [2018-10-27 03:01:59,512 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 3340 transitions. Word has length 319 [2018-10-27 03:01:59,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:01:59,512 INFO L481 AbstractCegarLoop]: Abstraction has 2427 states and 3340 transitions. [2018-10-27 03:01:59,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 03:01:59,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 3340 transitions. [2018-10-27 03:01:59,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-10-27 03:01:59,534 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:01:59,534 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:59,535 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:01:59,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:01:59,535 INFO L82 PathProgramCache]: Analyzing trace with hash 2012329804, now seen corresponding path program 1 times [2018-10-27 03:01:59,535 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:01:59,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:01:59,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:01:59,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:01:59,539 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:01:59,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:02:00,052 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 03:02:00,264 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 03:02:00,945 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 229 proven. 190 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 03:02:00,946 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:02:00,946 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:02:00,946 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 405 with the following transitions: [2018-10-27 03:02:00,947 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [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], [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], [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 03:02:00,954 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:02:00,954 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:02:03,256 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:02:09,957 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:02:09,958 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 03:02:09,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:02:09,986 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:02:13,495 INFO L227 lantSequenceWeakener]: Weakened 64 states. On average, predicates are now at 78.12% of their original sizes. [2018-10-27 03:02:13,496 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:03:02,795 INFO L415 sIntCurrentIteration]: We unified 403 AI predicates to 403 [2018-10-27 03:03:02,795 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:03:02,796 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:03:02,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [12] total 28 [2018-10-27 03:03:02,796 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:03:02,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 03:03:02,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 03:03:02,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2018-10-27 03:03:02,798 INFO L87 Difference]: Start difference. First operand 2427 states and 3340 transitions. Second operand 18 states. Received shutdown request... [2018-10-27 03:05:18,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-27 03:05:18,626 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:05:18,632 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:05:18,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:05:18 BoogieIcfgContainer [2018-10-27 03:05:18,633 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:05:18,633 INFO L168 Benchmark]: Toolchain (without parser) took 244780.71 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-27 03:05:18,635 INFO L168 Benchmark]: CDTParser took 0.20 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 03:05:18,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 798.57 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 03:05:18,636 INFO L168 Benchmark]: Boogie Procedure Inliner took 236.27 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -837.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-27 03:05:18,637 INFO L168 Benchmark]: Boogie Preprocessor took 107.35 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-10-27 03:05:18,638 INFO L168 Benchmark]: RCFGBuilder took 3895.46 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: 121.4 MB). Peak memory consumption was 121.4 MB. Max. memory is 7.1 GB. [2018-10-27 03:05:18,638 INFO L168 Benchmark]: TraceAbstraction took 239738.70 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 3.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 922.3 MB. Max. memory is 7.1 GB. [2018-10-27 03:05:18,644 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 798.57 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 236.27 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -837.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.35 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3895.46 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: 121.4 MB). Peak memory consumption was 121.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 239738.70 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 3.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 922.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 145]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 145). Cancelled while BasicCegarLoop was constructing difference of abstraction (2427states) and FLOYD_HOARE automaton (currently 20 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (889 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 239.6s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 162.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 635 SDtfs, 2732 SDslu, 386 SDs, 0 SdLazy, 4953 SolverSat, 1080 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 70.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 747 GetRequests, 649 SyntacticMatches, 60 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 51.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2427occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 16.2s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9966104846328568 AbsIntWeakeningRatio, 0.08044382801664356 AbsIntAvgWeakeningVarsNumRemoved, 653.6324549237171 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 201 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 1139 NumberOfCodeBlocks, 1139 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1134 ConstructedInterpolants, 0 QuantifiedInterpolants, 2745835 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 548/846 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown