java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:37:38,919 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:37:38,921 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:37:38,934 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:37:38,934 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:37:38,935 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:37:38,936 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:37:38,938 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:37:38,940 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:37:38,940 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:37:38,941 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:37:38,942 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:37:38,942 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:37:38,943 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:37:38,945 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:37:38,945 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:37:38,946 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:37:38,948 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:37:38,950 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:37:38,952 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:37:38,953 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:37:38,954 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:37:38,957 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:37:38,957 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:37:38,957 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:37:38,958 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:37:38,959 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:37:38,960 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:37:38,961 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:37:38,962 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:37:38,962 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:37:38,963 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:37:38,963 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:37:38,963 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:37:38,964 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:37:38,965 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:37:38,965 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 15:37:38,981 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:37:38,982 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:37:38,982 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:37:38,983 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:37:38,983 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:37:38,983 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:37:38,983 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:37:38,984 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:37:38,984 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:37:38,984 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:37:38,984 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:37:38,984 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:37:38,985 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:37:38,985 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:37:38,985 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:37:38,987 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:37:38,987 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:37:38,987 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:37:38,987 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:37:38,987 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:37:38,988 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:37:38,988 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:37:38,988 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:37:38,988 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:37:38,988 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:37:38,989 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:37:38,989 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:37:38,989 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:37:38,989 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:37:38,990 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:37:38,990 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:37:38,990 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:37:38,990 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:37:38,990 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:37:39,043 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:37:39,059 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:37:39,063 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:37:39,064 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:37:39,065 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:37:39,065 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label59_true-unreach-call.c [2018-11-07 15:37:39,131 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4207ed85c/ce8828f0d6124266a1567da2b2b3d917/FLAG94115c177 [2018-11-07 15:37:39,895 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:37:39,896 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label59_true-unreach-call.c [2018-11-07 15:37:39,924 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4207ed85c/ce8828f0d6124266a1567da2b2b3d917/FLAG94115c177 [2018-11-07 15:37:39,943 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4207ed85c/ce8828f0d6124266a1567da2b2b3d917 [2018-11-07 15:37:39,957 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:37:39,959 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:37:39,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:37:39,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:37:39,967 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:37:39,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:37:39" (1/1) ... [2018-11-07 15:37:39,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fb0a787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:37:39, skipping insertion in model container [2018-11-07 15:37:39,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:37:39" (1/1) ... [2018-11-07 15:37:39,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:37:40,118 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:37:41,075 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:37:41,078 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:37:41,463 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:37:41,488 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:37:41,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:37:41 WrapperNode [2018-11-07 15:37:41,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:37:41,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:37:41,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:37:41,490 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:37:41,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:37:41" (1/1) ... [2018-11-07 15:37:41,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:37:41" (1/1) ... [2018-11-07 15:37:41,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:37:41,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:37:41,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:37:41,777 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:37:41,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:37:41" (1/1) ... [2018-11-07 15:37:41,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:37:41" (1/1) ... [2018-11-07 15:37:41,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:37:41" (1/1) ... [2018-11-07 15:37:41,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:37:41" (1/1) ... [2018-11-07 15:37:41,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:37:41" (1/1) ... [2018-11-07 15:37:41,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:37:41" (1/1) ... [2018-11-07 15:37:41,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:37:41" (1/1) ... [2018-11-07 15:37:41,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:37:41,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:37:41,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:37:41,981 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:37:41,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:37:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:37:42,050 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:37:42,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:37:42,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:37:42,050 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:37:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:37:42,051 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:37:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:37:42,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:37:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:37:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:37:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:37:50,223 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:37:50,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:37:50 BoogieIcfgContainer [2018-11-07 15:37:50,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:37:50,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:37:50,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:37:50,228 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:37:50,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:37:39" (1/3) ... [2018-11-07 15:37:50,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33949a17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:37:50, skipping insertion in model container [2018-11-07 15:37:50,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:37:41" (2/3) ... [2018-11-07 15:37:50,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33949a17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:37:50, skipping insertion in model container [2018-11-07 15:37:50,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:37:50" (3/3) ... [2018-11-07 15:37:50,232 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label59_true-unreach-call.c [2018-11-07 15:37:50,243 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:37:50,252 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:37:50,268 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:37:50,317 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:37:50,318 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:37:50,318 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:37:50,318 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:37:50,318 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:37:50,318 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:37:50,319 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:37:50,319 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:37:50,365 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-07 15:37:50,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-07 15:37:50,374 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:37:50,376 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] [2018-11-07 15:37:50,378 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:37:50,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:37:50,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1188687990, now seen corresponding path program 1 times [2018-11-07 15:37:50,386 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:37:50,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:37:50,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:37:50,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:37:50,433 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:37:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:37:50,889 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-07 15:37:50,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:37:50,902 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:37:50,902 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:37:50,903 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:37:50,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:37:50,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:37:50,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:37:50,927 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-07 15:38:02,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:38:02,535 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-11-07 15:38:02,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:38:02,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-11-07 15:38:02,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:38:02,586 INFO L225 Difference]: With dead ends: 2164 [2018-11-07 15:38:02,586 INFO L226 Difference]: Without dead ends: 1554 [2018-11-07 15:38:02,598 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:38:02,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-11-07 15:38:02,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1051. [2018-11-07 15:38:02,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1051 states. [2018-11-07 15:38:02,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1880 transitions. [2018-11-07 15:38:02,724 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1880 transitions. Word has length 39 [2018-11-07 15:38:02,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:38:02,725 INFO L480 AbstractCegarLoop]: Abstraction has 1051 states and 1880 transitions. [2018-11-07 15:38:02,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:38:02,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1880 transitions. [2018-11-07 15:38:02,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-11-07 15:38:02,732 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:38:02,732 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:38:02,732 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:38:02,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:38:02,733 INFO L82 PathProgramCache]: Analyzing trace with hash 2141434535, now seen corresponding path program 1 times [2018-11-07 15:38:02,733 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:38:02,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:38:02,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:38:02,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:38:02,735 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:38:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:38:03,014 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:38:03,014 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:38:03,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 15:38:03,014 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:38:03,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 15:38:03,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 15:38:03,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 15:38:03,017 INFO L87 Difference]: Start difference. First operand 1051 states and 1880 transitions. Second operand 5 states. [2018-11-07 15:38:09,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:38:09,701 INFO L93 Difference]: Finished difference Result 3028 states and 5532 transitions. [2018-11-07 15:38:09,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:38:09,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2018-11-07 15:38:09,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:38:09,724 INFO L225 Difference]: With dead ends: 3028 [2018-11-07 15:38:09,724 INFO L226 Difference]: Without dead ends: 1983 [2018-11-07 15:38:09,729 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:38:09,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2018-11-07 15:38:09,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1957. [2018-11-07 15:38:09,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2018-11-07 15:38:09,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3236 transitions. [2018-11-07 15:38:09,822 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3236 transitions. Word has length 111 [2018-11-07 15:38:09,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:38:09,823 INFO L480 AbstractCegarLoop]: Abstraction has 1957 states and 3236 transitions. [2018-11-07 15:38:09,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 15:38:09,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3236 transitions. [2018-11-07 15:38:09,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-07 15:38:09,830 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:38:09,831 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:38:09,835 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:38:09,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:38:09,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1471325761, now seen corresponding path program 1 times [2018-11-07 15:38:09,836 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:38:09,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:38:09,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:38:09,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:38:09,837 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:38:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:38:10,423 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-11-07 15:38:10,657 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:38:10,658 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:38:10,658 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:38:10,659 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 115 with the following transitions: [2018-11-07 15:38:10,661 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 15:38:10,734 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:38:10,734 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:38:11,178 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 15:38:12,567 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 15:38:12,568 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 15:38:12,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:38:12,611 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 15:38:12,611 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:38:12,612 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 15:38:12,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:38:12,640 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 15:38:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:38:12,730 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 15:38:15,564 WARN L179 SmtUtils]: Spent 2.30 s on a formula simplification that was a NOOP. DAG size: 42 [2018-11-07 15:38:15,675 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:38:15,675 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 15:38:16,640 WARN L179 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2018-11-07 15:38:17,012 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:38:17,044 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 15:38:17,045 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-11-07 15:38:17,045 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:38:17,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:38:17,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:38:17,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-11-07 15:38:17,046 INFO L87 Difference]: Start difference. First operand 1957 states and 3236 transitions. Second operand 6 states. [2018-11-07 15:38:31,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:38:31,492 INFO L93 Difference]: Finished difference Result 7517 states and 12901 transitions. [2018-11-07 15:38:31,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 15:38:31,493 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2018-11-07 15:38:31,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:38:31,534 INFO L225 Difference]: With dead ends: 7517 [2018-11-07 15:38:31,534 INFO L226 Difference]: Without dead ends: 5566 [2018-11-07 15:38:31,552 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 223 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-11-07 15:38:31,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5566 states. [2018-11-07 15:38:31,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5566 to 5556. [2018-11-07 15:38:31,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5556 states. [2018-11-07 15:38:31,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5556 states to 5556 states and 9351 transitions. [2018-11-07 15:38:31,736 INFO L78 Accepts]: Start accepts. Automaton has 5556 states and 9351 transitions. Word has length 114 [2018-11-07 15:38:31,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:38:31,737 INFO L480 AbstractCegarLoop]: Abstraction has 5556 states and 9351 transitions. [2018-11-07 15:38:31,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:38:31,737 INFO L276 IsEmpty]: Start isEmpty. Operand 5556 states and 9351 transitions. [2018-11-07 15:38:31,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-11-07 15:38:31,741 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:38:31,742 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:38:31,742 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:38:31,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:38:31,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1996985273, now seen corresponding path program 1 times [2018-11-07 15:38:31,743 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:38:31,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:38:31,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:38:31,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:38:31,744 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:38:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:38:32,118 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:38:32,118 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:38:32,118 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:38:32,119 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 128 with the following transitions: [2018-11-07 15:38:32,119 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 15:38:32,124 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:38:32,124 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:38:32,235 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 15:38:33,077 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 15:38:33,077 INFO L272 AbstractInterpreter]: Visited 96 different actions 274 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 15:38:33,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:38:33,112 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 15:38:33,112 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:38:33,113 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 15:38:33,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:38:33,129 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 15:38:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:38:33,201 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 15:38:33,359 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:38:33,359 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 15:38:33,837 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:38:33,867 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:38:33,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-11-07 15:38:33,868 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:38:33,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:38:33,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:38:33,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:38:33,869 INFO L87 Difference]: Start difference. First operand 5556 states and 9351 transitions. Second operand 3 states. [2018-11-07 15:38:37,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:38:37,077 INFO L93 Difference]: Finished difference Result 13728 states and 22981 transitions. [2018-11-07 15:38:37,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:38:37,082 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2018-11-07 15:38:37,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:38:37,127 INFO L225 Difference]: With dead ends: 13728 [2018-11-07 15:38:37,127 INFO L226 Difference]: Without dead ends: 8178 [2018-11-07 15:38:37,164 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 253 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:38:37,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8178 states. [2018-11-07 15:38:37,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8178 to 8177. [2018-11-07 15:38:37,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8177 states. [2018-11-07 15:38:37,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8177 states to 8177 states and 12781 transitions. [2018-11-07 15:38:37,374 INFO L78 Accepts]: Start accepts. Automaton has 8177 states and 12781 transitions. Word has length 127 [2018-11-07 15:38:37,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:38:37,375 INFO L480 AbstractCegarLoop]: Abstraction has 8177 states and 12781 transitions. [2018-11-07 15:38:37,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:38:37,375 INFO L276 IsEmpty]: Start isEmpty. Operand 8177 states and 12781 transitions. [2018-11-07 15:38:37,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-11-07 15:38:37,384 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:38:37,385 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 15:38:37,385 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:38:37,385 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:38:37,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1686408890, now seen corresponding path program 1 times [2018-11-07 15:38:37,386 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:38:37,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:38:37,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:38:37,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:38:37,387 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:38:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:38:37,714 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:38:37,769 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 65 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 15:38:37,770 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:38:37,770 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:38:37,770 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 213 with the following transitions: [2018-11-07 15:38:37,770 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1329], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 15:38:37,775 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:38:37,775 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:38:37,841 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 15:38:38,934 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 15:38:38,934 INFO L272 AbstractInterpreter]: Visited 107 different actions 307 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 15:38:38,972 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:38:38,972 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 15:38:38,972 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:38:38,973 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-11-07 15:38:38,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:38:38,989 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 15:38:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:38:39,073 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 15:38:39,489 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:38:39,490 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 15:38:40,051 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:38:40,081 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 15:38:40,081 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 15:38:40,081 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 15:38:40,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 15:38:40,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 15:38:40,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-07 15:38:40,087 INFO L87 Difference]: Start difference. First operand 8177 states and 12781 transitions. Second operand 9 states. [2018-11-07 15:38:46,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:38:46,279 INFO L93 Difference]: Finished difference Result 16007 states and 25184 transitions. [2018-11-07 15:38:46,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 15:38:46,279 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 212 [2018-11-07 15:38:46,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:38:46,304 INFO L225 Difference]: With dead ends: 16007 [2018-11-07 15:38:46,305 INFO L226 Difference]: Without dead ends: 6866 [2018-11-07 15:38:46,335 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 422 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-11-07 15:38:46,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6866 states. [2018-11-07 15:38:46,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6866 to 6833. [2018-11-07 15:38:46,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6833 states. [2018-11-07 15:38:46,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6833 states to 6833 states and 8198 transitions. [2018-11-07 15:38:46,481 INFO L78 Accepts]: Start accepts. Automaton has 6833 states and 8198 transitions. Word has length 212 [2018-11-07 15:38:46,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:38:46,482 INFO L480 AbstractCegarLoop]: Abstraction has 6833 states and 8198 transitions. [2018-11-07 15:38:46,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 15:38:46,482 INFO L276 IsEmpty]: Start isEmpty. Operand 6833 states and 8198 transitions. [2018-11-07 15:38:46,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-11-07 15:38:46,487 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:38:46,488 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:38:46,488 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:38:46,488 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:38:46,489 INFO L82 PathProgramCache]: Analyzing trace with hash 133092229, now seen corresponding path program 1 times [2018-11-07 15:38:46,489 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:38:46,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:38:46,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:38:46,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:38:46,490 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:38:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:38:46,841 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 15:38:46,888 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-07 15:38:46,888 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:38:46,888 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:38:46,888 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:38:46,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:38:46,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:38:46,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:38:46,890 INFO L87 Difference]: Start difference. First operand 6833 states and 8198 transitions. Second operand 4 states. [2018-11-07 15:38:51,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:38:51,894 INFO L93 Difference]: Finished difference Result 24671 states and 30283 transitions. [2018-11-07 15:38:51,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:38:51,895 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 293 [2018-11-07 15:38:51,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:38:51,949 INFO L225 Difference]: With dead ends: 24671 [2018-11-07 15:38:51,950 INFO L226 Difference]: Without dead ends: 14268 [2018-11-07 15:38:51,975 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:38:51,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14268 states. [2018-11-07 15:38:52,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14268 to 13829. [2018-11-07 15:38:52,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13829 states. [2018-11-07 15:38:52,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13829 states to 13829 states and 16249 transitions. [2018-11-07 15:38:52,263 INFO L78 Accepts]: Start accepts. Automaton has 13829 states and 16249 transitions. Word has length 293 [2018-11-07 15:38:52,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:38:52,264 INFO L480 AbstractCegarLoop]: Abstraction has 13829 states and 16249 transitions. [2018-11-07 15:38:52,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:38:52,264 INFO L276 IsEmpty]: Start isEmpty. Operand 13829 states and 16249 transitions. [2018-11-07 15:38:52,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-11-07 15:38:52,279 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:38:52,280 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:38:52,280 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:38:52,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:38:52,281 INFO L82 PathProgramCache]: Analyzing trace with hash 197834602, now seen corresponding path program 1 times [2018-11-07 15:38:52,281 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:38:52,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:38:52,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:38:52,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:38:52,282 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:38:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:38:53,273 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:38:53,273 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:38:53,274 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:38:53,274 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 388 with the following transitions: [2018-11-07 15:38:53,275 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [204], [208], [212], [216], [227], [231], [235], [239], [250], [254], [258], [262], [266], [270], [273], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-07 15:38:53,285 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:38:53,286 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:38:53,709 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 15:38:56,486 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 15:38:56,486 INFO L272 AbstractInterpreter]: Visited 356 different actions 2105 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 15:38:56,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:38:56,513 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 15:38:56,513 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:38:56,513 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 15:38:56,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:38:56,525 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 15:38:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:38:56,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 15:38:57,124 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:38:57,124 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 15:38:57,547 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:38:57,568 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 15:38:57,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-11-07 15:38:57,569 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:38:57,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:38:57,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:38:57,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-11-07 15:38:57,570 INFO L87 Difference]: Start difference. First operand 13829 states and 16249 transitions. Second operand 6 states. [2018-11-07 15:39:02,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:39:02,643 INFO L93 Difference]: Finished difference Result 29847 states and 35106 transitions. [2018-11-07 15:39:02,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 15:39:02,643 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 387 [2018-11-07 15:39:02,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:39:02,689 INFO L225 Difference]: With dead ends: 29847 [2018-11-07 15:39:02,689 INFO L226 Difference]: Without dead ends: 15590 [2018-11-07 15:39:02,709 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 773 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-11-07 15:39:02,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15590 states. [2018-11-07 15:39:02,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15590 to 14712. [2018-11-07 15:39:02,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14712 states. [2018-11-07 15:39:02,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14712 states to 14712 states and 17286 transitions. [2018-11-07 15:39:02,989 INFO L78 Accepts]: Start accepts. Automaton has 14712 states and 17286 transitions. Word has length 387 [2018-11-07 15:39:02,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:39:02,991 INFO L480 AbstractCegarLoop]: Abstraction has 14712 states and 17286 transitions. [2018-11-07 15:39:02,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:39:02,991 INFO L276 IsEmpty]: Start isEmpty. Operand 14712 states and 17286 transitions. [2018-11-07 15:39:03,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2018-11-07 15:39:03,023 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:39:03,024 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 15:39:03,024 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:39:03,024 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:39:03,024 INFO L82 PathProgramCache]: Analyzing trace with hash -361053273, now seen corresponding path program 1 times [2018-11-07 15:39:03,025 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:39:03,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:39:03,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:39:03,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:39:03,026 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:39:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:39:03,790 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2018-11-07 15:39:03,791 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:39:03,791 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:39:03,791 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 576 with the following transitions: [2018-11-07 15:39:03,792 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1239], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1670], [1673], [1677], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1861], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 15:39:03,807 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:39:03,807 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:39:03,863 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 15:39:05,354 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 15:39:05,355 INFO L272 AbstractInterpreter]: Visited 215 different actions 850 times. Merged at 7 different actions 25 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 15:39:05,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:39:05,393 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 15:39:05,393 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:39:05,394 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 15:39:05,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:39:05,409 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 15:39:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:39:05,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 15:39:05,768 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 430 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-11-07 15:39:05,769 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 15:39:06,305 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2018-11-07 15:39:06,326 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 15:39:06,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-11-07 15:39:06,326 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:39:06,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:39:06,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:39:06,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:39:06,328 INFO L87 Difference]: Start difference. First operand 14712 states and 17286 transitions. Second operand 3 states. [2018-11-07 15:39:10,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:39:10,815 INFO L93 Difference]: Finished difference Result 40379 states and 48307 transitions. [2018-11-07 15:39:10,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:39:10,816 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 575 [2018-11-07 15:39:10,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:39:10,897 INFO L225 Difference]: With dead ends: 40379 [2018-11-07 15:39:10,898 INFO L226 Difference]: Without dead ends: 25673 [2018-11-07 15:39:10,923 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1152 GetRequests, 1150 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:39:10,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25673 states. [2018-11-07 15:39:11,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25673 to 25655. [2018-11-07 15:39:11,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25655 states. [2018-11-07 15:39:11,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25655 states to 25655 states and 30265 transitions. [2018-11-07 15:39:11,372 INFO L78 Accepts]: Start accepts. Automaton has 25655 states and 30265 transitions. Word has length 575 [2018-11-07 15:39:11,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:39:11,374 INFO L480 AbstractCegarLoop]: Abstraction has 25655 states and 30265 transitions. [2018-11-07 15:39:11,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:39:11,374 INFO L276 IsEmpty]: Start isEmpty. Operand 25655 states and 30265 transitions. [2018-11-07 15:39:11,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2018-11-07 15:39:11,426 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:39:11,427 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 15:39:11,427 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:39:11,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:39:11,428 INFO L82 PathProgramCache]: Analyzing trace with hash 905567621, now seen corresponding path program 1 times [2018-11-07 15:39:11,428 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:39:11,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:39:11,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:39:11,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:39:11,429 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:39:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:39:12,496 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 342 proven. 114 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2018-11-07 15:39:12,497 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:39:12,497 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:39:12,497 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 654 with the following transitions: [2018-11-07 15:39:12,498 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1404], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1810], [1815], [1817], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1917], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 15:39:12,503 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:39:12,503 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:39:12,558 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 15:41:46,884 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 15:41:46,885 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 15:41:46,885 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 15:41:46,885 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:41:46,885 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 15:41:46,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:41:46,896 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 15:41:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:41:47,076 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 15:41:47,083 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 15:41:47,284 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 15:41:47,284 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 15:41:47,288 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 15:41:47,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:41:47 BoogieIcfgContainer [2018-11-07 15:41:47,289 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 15:41:47,289 INFO L168 Benchmark]: Toolchain (without parser) took 247331.53 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 1.7 GB in the end (delta: -280.8 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-07 15:41:47,290 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 15:41:47,291 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1528.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-07 15:41:47,292 INFO L168 Benchmark]: Boogie Procedure Inliner took 286.33 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 778.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -957.9 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-11-07 15:41:47,293 INFO L168 Benchmark]: Boogie Preprocessor took 203.88 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. [2018-11-07 15:41:47,294 INFO L168 Benchmark]: RCFGBuilder took 8243.25 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 460.4 MB). Peak memory consumption was 460.4 MB. Max. memory is 7.1 GB. [2018-11-07 15:41:47,294 INFO L168 Benchmark]: TraceAbstraction took 237063.67 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 1.7 GB in the end (delta: 65.5 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 15:41:47,299 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1528.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 286.33 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 778.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -957.9 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 203.88 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 8243.25 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 460.4 MB). Peak memory consumption was 460.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237063.67 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 1.7 GB in the end (delta: 65.5 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 104). Cancelled while BasicCegarLoop was analyzing trace of length 654 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 236.9s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 57.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2626 SDtfs, 11044 SDslu, 1481 SDs, 0 SdLazy, 19692 SolverSat, 5903 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 49.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2896 GetRequests, 2830 SyntacticMatches, 12 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 7.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25655occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 163.3s AbstIntTime, 6 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 1908 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 10.9s InterpolantComputationTime, 3273 NumberOfCodeBlocks, 3273 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 4670 ConstructedInterpolants, 80 QuantifiedInterpolants, 3960169 SizeOfPredicates, 10 NumberOfNonLiveVariables, 2354 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 18 InterpolantComputations, 8 PerfectInterpolantSequences, 2867/3004 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown