java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label29_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:08:04,854 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:08:04,857 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:08:04,869 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:08:04,870 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:08:04,871 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:08:04,872 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:08:04,874 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:08:04,875 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:08:04,876 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:08:04,877 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:08:04,877 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:08:04,878 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:08:04,879 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:08:04,880 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:08:04,881 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:08:04,882 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:08:04,884 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:08:04,886 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:08:04,888 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:08:04,889 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:08:04,890 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:08:04,892 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:08:04,893 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:08:04,893 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:08:04,894 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:08:04,895 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:08:04,895 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:08:04,896 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:08:04,897 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:08:04,898 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:08:04,898 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:08:04,899 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:08:04,899 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:08:04,900 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:08:04,901 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:08:04,901 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 18:08:04,927 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:08:04,928 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:08:04,928 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:08:04,929 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:08:04,929 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:08:04,929 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:08:04,929 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:08:04,930 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:08:04,930 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:08:04,930 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:08:04,930 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:08:04,930 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:08:04,931 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:08:04,931 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:08:04,931 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:08:04,932 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:08:04,932 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:08:04,932 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:08:04,932 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:08:04,934 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:08:04,934 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:08:04,934 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:08:04,934 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:08:04,934 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:08:04,935 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:08:04,935 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:08:04,935 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:08:04,935 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:08:04,935 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:08:04,936 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:08:04,936 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:08:04,936 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:08:04,936 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:08:04,936 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:08:04,937 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:08:04,994 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:08:05,010 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:08:05,015 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:08:05,017 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:08:05,017 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:08:05,018 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label29_false-unreach-call.c [2018-11-07 18:08:05,086 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0c3b271f/83dea518d2d64451acfabbce99a77bc2/FLAG4159278c1 [2018-11-07 18:08:05,838 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:08:05,839 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label29_false-unreach-call.c [2018-11-07 18:08:05,861 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0c3b271f/83dea518d2d64451acfabbce99a77bc2/FLAG4159278c1 [2018-11-07 18:08:05,877 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0c3b271f/83dea518d2d64451acfabbce99a77bc2 [2018-11-07 18:08:05,888 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:08:05,890 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:08:05,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:08:05,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:08:05,895 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:08:05,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:08:05" (1/1) ... [2018-11-07 18:08:05,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9260898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:05, skipping insertion in model container [2018-11-07 18:08:05,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:08:05" (1/1) ... [2018-11-07 18:08:05,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:08:06,001 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:08:06,940 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:08:06,945 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:08:07,284 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:08:07,306 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:08:07,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:07 WrapperNode [2018-11-07 18:08:07,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:08:07,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:08:07,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:08:07,309 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:08:07,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:07" (1/1) ... [2018-11-07 18:08:07,541 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:07" (1/1) ... [2018-11-07 18:08:07,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:08:07,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:08:07,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:08:07,561 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:08:07,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:07" (1/1) ... [2018-11-07 18:08:07,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:07" (1/1) ... [2018-11-07 18:08:07,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:07" (1/1) ... [2018-11-07 18:08:07,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:07" (1/1) ... [2018-11-07 18:08:07,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:07" (1/1) ... [2018-11-07 18:08:07,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:07" (1/1) ... [2018-11-07 18:08:07,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:07" (1/1) ... [2018-11-07 18:08:07,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:08:07,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:08:07,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:08:07,713 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:08:07,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:07" (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 18:08:07,784 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:08:07,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:08:07,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:08:07,785 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 18:08:07,785 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 18:08:07,786 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:08:07,786 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:08:07,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:08:07,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:08:07,786 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:08:07,787 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:08:14,147 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:08:14,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:08:14 BoogieIcfgContainer [2018-11-07 18:08:14,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:08:14,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:08:14,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:08:14,153 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:08:14,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:08:05" (1/3) ... [2018-11-07 18:08:14,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca4856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:08:14, skipping insertion in model container [2018-11-07 18:08:14,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:08:07" (2/3) ... [2018-11-07 18:08:14,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca4856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:08:14, skipping insertion in model container [2018-11-07 18:08:14,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:08:14" (3/3) ... [2018-11-07 18:08:14,157 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label29_false-unreach-call.c [2018-11-07 18:08:14,168 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:08:14,179 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:08:14,198 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:08:14,241 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:08:14,241 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:08:14,241 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:08:14,242 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:08:14,242 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:08:14,242 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:08:14,242 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:08:14,242 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:08:14,276 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 18:08:14,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-07 18:08:14,284 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:08:14,286 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] [2018-11-07 18:08:14,288 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:08:14,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:08:14,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1800522660, now seen corresponding path program 1 times [2018-11-07 18:08:14,296 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:08:14,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:14,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:08:14,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:14,352 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:08:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:08:14,718 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:08:14,822 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 18:08:14,825 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:08:14,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:08:14,826 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:08:14,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:08:14,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:08:14,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:08:14,853 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-11-07 18:08:18,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:08:18,302 INFO L93 Difference]: Finished difference Result 1194 states and 2152 transitions. [2018-11-07 18:08:18,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:08:18,304 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2018-11-07 18:08:18,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:08:18,328 INFO L225 Difference]: With dead ends: 1194 [2018-11-07 18:08:18,329 INFO L226 Difference]: Without dead ends: 754 [2018-11-07 18:08:18,341 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:08:18,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2018-11-07 18:08:18,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 752. [2018-11-07 18:08:18,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2018-11-07 18:08:18,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1325 transitions. [2018-11-07 18:08:18,440 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1325 transitions. Word has length 28 [2018-11-07 18:08:18,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:08:18,441 INFO L480 AbstractCegarLoop]: Abstraction has 752 states and 1325 transitions. [2018-11-07 18:08:18,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:08:18,441 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1325 transitions. [2018-11-07 18:08:18,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-07 18:08:18,448 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:08:18,448 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:08:18,448 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:08:18,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:08:18,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1795100031, now seen corresponding path program 1 times [2018-11-07 18:08:18,449 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:08:18,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:18,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:08:18,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:18,451 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:08:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:08:18,860 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:08:18,860 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:08:18,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:08:18,860 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:08:18,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:08:18,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:08:18,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:08:18,863 INFO L87 Difference]: Start difference. First operand 752 states and 1325 transitions. Second operand 6 states. [2018-11-07 18:08:27,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:08:27,436 INFO L93 Difference]: Finished difference Result 2839 states and 5160 transitions. [2018-11-07 18:08:27,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 18:08:27,437 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-11-07 18:08:27,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:08:27,458 INFO L225 Difference]: With dead ends: 2839 [2018-11-07 18:08:27,458 INFO L226 Difference]: Without dead ends: 2093 [2018-11-07 18:08:27,467 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:08:27,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2018-11-07 18:08:27,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 2054. [2018-11-07 18:08:27,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2054 states. [2018-11-07 18:08:27,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 3400 transitions. [2018-11-07 18:08:27,594 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 3400 transitions. Word has length 102 [2018-11-07 18:08:27,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:08:27,595 INFO L480 AbstractCegarLoop]: Abstraction has 2054 states and 3400 transitions. [2018-11-07 18:08:27,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:08:27,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 3400 transitions. [2018-11-07 18:08:27,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-11-07 18:08:27,603 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:08:27,604 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:08:27,604 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:08:27,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:08:27,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1736818506, now seen corresponding path program 1 times [2018-11-07 18:08:27,610 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:08:27,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:27,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:08:27,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:27,613 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:08:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:08:27,881 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:08:27,881 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:08:27,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 18:08:27,882 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:08:27,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 18:08:27,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 18:08:27,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 18:08:27,883 INFO L87 Difference]: Start difference. First operand 2054 states and 3400 transitions. Second operand 5 states. [2018-11-07 18:08:32,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:08:32,592 INFO L93 Difference]: Finished difference Result 6124 states and 10298 transitions. [2018-11-07 18:08:32,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 18:08:32,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2018-11-07 18:08:32,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:08:32,617 INFO L225 Difference]: With dead ends: 6124 [2018-11-07 18:08:32,617 INFO L226 Difference]: Without dead ends: 4076 [2018-11-07 18:08:32,627 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:08:32,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states. [2018-11-07 18:08:32,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 3990. [2018-11-07 18:08:32,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3990 states. [2018-11-07 18:08:32,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3990 states to 3990 states and 5864 transitions. [2018-11-07 18:08:32,748 INFO L78 Accepts]: Start accepts. Automaton has 3990 states and 5864 transitions. Word has length 105 [2018-11-07 18:08:32,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:08:32,748 INFO L480 AbstractCegarLoop]: Abstraction has 3990 states and 5864 transitions. [2018-11-07 18:08:32,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 18:08:32,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3990 states and 5864 transitions. [2018-11-07 18:08:32,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-11-07 18:08:32,753 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:08:32,753 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:08:32,753 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:08:32,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:08:32,754 INFO L82 PathProgramCache]: Analyzing trace with hash 895222520, now seen corresponding path program 1 times [2018-11-07 18:08:32,754 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:08:32,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:32,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:08:32,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:32,755 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:08:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:08:33,053 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:08:33,116 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:08:33,116 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:08:33,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:08:33,117 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:08:33,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:08:33,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:08:33,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:08:33,118 INFO L87 Difference]: Start difference. First operand 3990 states and 5864 transitions. Second operand 6 states. [2018-11-07 18:08:37,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:08:37,844 INFO L93 Difference]: Finished difference Result 11063 states and 16911 transitions. [2018-11-07 18:08:37,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:08:37,848 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2018-11-07 18:08:37,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:08:37,894 INFO L225 Difference]: With dead ends: 11063 [2018-11-07 18:08:37,894 INFO L226 Difference]: Without dead ends: 7079 [2018-11-07 18:08:37,930 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:08:37,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7079 states. [2018-11-07 18:08:38,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7079 to 6978. [2018-11-07 18:08:38,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6978 states. [2018-11-07 18:08:38,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6978 states to 6978 states and 9524 transitions. [2018-11-07 18:08:38,151 INFO L78 Accepts]: Start accepts. Automaton has 6978 states and 9524 transitions. Word has length 115 [2018-11-07 18:08:38,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:08:38,152 INFO L480 AbstractCegarLoop]: Abstraction has 6978 states and 9524 transitions. [2018-11-07 18:08:38,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:08:38,152 INFO L276 IsEmpty]: Start isEmpty. Operand 6978 states and 9524 transitions. [2018-11-07 18:08:38,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-07 18:08:38,155 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:08:38,156 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:08:38,156 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:08:38,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:08:38,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1383361339, now seen corresponding path program 1 times [2018-11-07 18:08:38,157 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:08:38,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:38,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:08:38,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:38,159 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:08:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:08:38,537 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:08:38,537 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:08:38,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 18:08:38,537 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:08:38,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 18:08:38,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 18:08:38,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 18:08:38,543 INFO L87 Difference]: Start difference. First operand 6978 states and 9524 transitions. Second operand 5 states. [2018-11-07 18:08:46,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:08:46,006 INFO L93 Difference]: Finished difference Result 18662 states and 26359 transitions. [2018-11-07 18:08:46,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 18:08:46,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2018-11-07 18:08:46,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:08:46,075 INFO L225 Difference]: With dead ends: 18662 [2018-11-07 18:08:46,075 INFO L226 Difference]: Without dead ends: 11690 [2018-11-07 18:08:46,120 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:08:46,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11690 states. [2018-11-07 18:08:46,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11690 to 11544. [2018-11-07 18:08:46,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11544 states. [2018-11-07 18:08:46,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11544 states to 11544 states and 15554 transitions. [2018-11-07 18:08:46,386 INFO L78 Accepts]: Start accepts. Automaton has 11544 states and 15554 transitions. Word has length 125 [2018-11-07 18:08:46,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:08:46,386 INFO L480 AbstractCegarLoop]: Abstraction has 11544 states and 15554 transitions. [2018-11-07 18:08:46,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 18:08:46,387 INFO L276 IsEmpty]: Start isEmpty. Operand 11544 states and 15554 transitions. [2018-11-07 18:08:46,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-07 18:08:46,391 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:08:46,391 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:08:46,391 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:08:46,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:08:46,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1389612834, now seen corresponding path program 1 times [2018-11-07 18:08:46,392 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:08:46,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:46,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:08:46,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:46,393 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:08:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:08:46,849 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 18:08:47,156 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:08:47,157 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:08:47,157 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:08:47,158 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 141 with the following transitions: [2018-11-07 18:08:47,160 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 18:08:47,212 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:08:47,212 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:08:47,822 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:08:47,827 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 18:08:47,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:08:47,880 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:08:48,266 INFO L227 lantSequenceWeakener]: Weakened 134 states. On average, predicates are now at 77.54% of their original sizes. [2018-11-07 18:08:48,266 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:08:48,750 INFO L415 sIntCurrentIteration]: We unified 139 AI predicates to 139 [2018-11-07 18:08:48,750 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:08:48,751 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:08:48,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-11-07 18:08:48,752 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:08:48,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 18:08:48,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 18:08:48,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:08:48,753 INFO L87 Difference]: Start difference. First operand 11544 states and 15554 transitions. Second operand 8 states. [2018-11-07 18:08:51,915 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:09:20,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:09:20,477 INFO L93 Difference]: Finished difference Result 23075 states and 31099 transitions. [2018-11-07 18:09:20,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 18:09:20,478 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2018-11-07 18:09:20,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:09:20,517 INFO L225 Difference]: With dead ends: 23075 [2018-11-07 18:09:20,518 INFO L226 Difference]: Without dead ends: 11537 [2018-11-07 18:09:20,551 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 141 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 18:09:20,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11537 states. [2018-11-07 18:09:20,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11537 to 11535. [2018-11-07 18:09:20,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11535 states. [2018-11-07 18:09:20,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11535 states to 11535 states and 15513 transitions. [2018-11-07 18:09:20,787 INFO L78 Accepts]: Start accepts. Automaton has 11535 states and 15513 transitions. Word has length 140 [2018-11-07 18:09:20,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:09:20,788 INFO L480 AbstractCegarLoop]: Abstraction has 11535 states and 15513 transitions. [2018-11-07 18:09:20,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 18:09:20,788 INFO L276 IsEmpty]: Start isEmpty. Operand 11535 states and 15513 transitions. [2018-11-07 18:09:20,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-11-07 18:09:20,793 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:09:20,793 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 18:09:20,794 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:09:20,794 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:09:20,794 INFO L82 PathProgramCache]: Analyzing trace with hash -83318393, now seen corresponding path program 1 times [2018-11-07 18:09:20,795 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:09:20,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:09:20,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:09:20,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:09:20,796 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:09:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:09:22,098 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:09:22,098 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:09:22,098 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:09:22,099 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2018-11-07 18:09:22,099 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 18:09:22,105 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:09:22,106 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:09:22,228 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:09:22,863 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:09:22,863 INFO L272 AbstractInterpreter]: Visited 120 different actions 804 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:09:22,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:09:22,869 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:09:23,267 INFO L227 lantSequenceWeakener]: Weakened 70 states. On average, predicates are now at 78.25% of their original sizes. [2018-11-07 18:09:23,267 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:09:24,271 INFO L415 sIntCurrentIteration]: We unified 235 AI predicates to 235 [2018-11-07 18:09:24,271 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:09:24,272 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:09:24,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [11] total 28 [2018-11-07 18:09:24,272 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:09:24,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 18:09:24,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 18:09:24,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2018-11-07 18:09:24,274 INFO L87 Difference]: Start difference. First operand 11535 states and 15513 transitions. Second operand 19 states. [2018-11-07 18:10:11,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:10:11,742 INFO L93 Difference]: Finished difference Result 24729 states and 32917 transitions. [2018-11-07 18:10:11,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-07 18:10:11,742 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 236 [2018-11-07 18:10:11,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:10:11,784 INFO L225 Difference]: With dead ends: 24729 [2018-11-07 18:10:11,784 INFO L226 Difference]: Without dead ends: 13508 [2018-11-07 18:10:11,807 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 249 GetRequests, 216 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=246, Invalid=810, Unknown=0, NotChecked=0, Total=1056 [2018-11-07 18:10:11,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13508 states. [2018-11-07 18:10:12,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13508 to 12999. [2018-11-07 18:10:12,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12999 states. [2018-11-07 18:10:12,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12999 states to 12999 states and 17020 transitions. [2018-11-07 18:10:12,056 INFO L78 Accepts]: Start accepts. Automaton has 12999 states and 17020 transitions. Word has length 236 [2018-11-07 18:10:12,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:10:12,057 INFO L480 AbstractCegarLoop]: Abstraction has 12999 states and 17020 transitions. [2018-11-07 18:10:12,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-07 18:10:12,058 INFO L276 IsEmpty]: Start isEmpty. Operand 12999 states and 17020 transitions. [2018-11-07 18:10:12,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-11-07 18:10:12,071 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:10:12,072 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 18:10:12,072 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:10:12,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:10:12,073 INFO L82 PathProgramCache]: Analyzing trace with hash 783971373, now seen corresponding path program 1 times [2018-11-07 18:10:12,073 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:10:12,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:10:12,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:10:12,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:10:12,074 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:10:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:10:21,434 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 18:10:21,434 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:10:21,434 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:10:21,435 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 401 with the following transitions: [2018-11-07 18:10:21,436 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [695], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 18:10:21,449 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:10:21,449 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:10:21,661 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:10:21,955 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:10:21,956 INFO L272 AbstractInterpreter]: Visited 283 different actions 560 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:10:21,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:10:21,996 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:10:22,652 INFO L227 lantSequenceWeakener]: Weakened 64 states. On average, predicates are now at 80.38% of their original sizes. [2018-11-07 18:10:22,652 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:10:23,159 INFO L415 sIntCurrentIteration]: We unified 399 AI predicates to 399 [2018-11-07 18:10:23,159 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:10:23,159 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:10:23,159 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-11-07 18:10:23,160 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:10:23,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 18:10:23,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 18:10:23,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-07 18:10:23,162 INFO L87 Difference]: Start difference. First operand 12999 states and 17020 transitions. Second operand 21 states. [2018-11-07 18:10:54,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:10:54,909 INFO L93 Difference]: Finished difference Result 25142 states and 33442 transitions. [2018-11-07 18:10:54,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-07 18:10:54,910 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 400 [2018-11-07 18:10:54,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:10:54,959 INFO L225 Difference]: With dead ends: 25142 [2018-11-07 18:10:54,959 INFO L226 Difference]: Without dead ends: 13921 [2018-11-07 18:10:54,986 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 417 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=279, Invalid=1203, Unknown=0, NotChecked=0, Total=1482 [2018-11-07 18:10:54,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13921 states. [2018-11-07 18:10:55,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13921 to 13914. [2018-11-07 18:10:55,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13914 states. [2018-11-07 18:10:55,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13914 states to 13914 states and 18013 transitions. [2018-11-07 18:10:55,259 INFO L78 Accepts]: Start accepts. Automaton has 13914 states and 18013 transitions. Word has length 400 [2018-11-07 18:10:55,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:10:55,260 INFO L480 AbstractCegarLoop]: Abstraction has 13914 states and 18013 transitions. [2018-11-07 18:10:55,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-07 18:10:55,260 INFO L276 IsEmpty]: Start isEmpty. Operand 13914 states and 18013 transitions. [2018-11-07 18:10:55,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2018-11-07 18:10:55,273 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:10:55,274 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 18:10:55,274 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:10:55,274 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:10:55,275 INFO L82 PathProgramCache]: Analyzing trace with hash -956766804, now seen corresponding path program 1 times [2018-11-07 18:10:55,275 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:10:55,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:10:55,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:10:55,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:10:55,276 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:10:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:10:56,131 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 24 proven. 124 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 18:10:56,132 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:10:56,132 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:10:56,133 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 416 with the following transitions: [2018-11-07 18:10:56,133 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 18:10:56,142 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:10:56,142 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:10:56,338 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:10:57,352 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:10:57,352 INFO L272 AbstractInterpreter]: Visited 284 different actions 1121 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:10:57,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:10:57,361 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:10:57,361 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:10:57,361 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 18:10:57,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:10:57,371 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:10:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:10:57,539 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:11:12,743 WARN L179 SmtUtils]: Spent 14.71 s on a formula simplification. DAG size of input: 116 DAG size of output: 50 [2018-11-07 18:11:13,067 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 130 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:11:13,067 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:11:13,513 WARN L179 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2018-11-07 18:11:13,731 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2018-11-07 18:11:14,793 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 130 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:11:14,818 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:11:14,818 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 15 [2018-11-07 18:11:14,818 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:11:14,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 18:11:14,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 18:11:14,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2018-11-07 18:11:14,820 INFO L87 Difference]: Start difference. First operand 13914 states and 18013 transitions. Second operand 12 states. [2018-11-07 18:11:18,635 WARN L179 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 25 [2018-11-07 18:11:26,816 WARN L179 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 59 [2018-11-07 18:11:32,912 WARN L179 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 59 Received shutdown request... [2018-11-07 18:11:40,777 WARN L187 SmtUtils]: Removed 6 from assertion stack [2018-11-07 18:11:40,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-07 18:11:40,777 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:11:40,782 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:11:40,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:11:40 BoogieIcfgContainer [2018-11-07 18:11:40,783 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:11:40,784 INFO L168 Benchmark]: Toolchain (without parser) took 214895.07 ms. Allocated memory was 1.5 GB in the beginning and 5.6 GB in the end (delta: 4.1 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-07 18:11:40,787 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 18:11:40,787 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1416.60 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-11-07 18:11:40,788 INFO L168 Benchmark]: Boogie Procedure Inliner took 249.23 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -907.0 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-07 18:11:40,789 INFO L168 Benchmark]: Boogie Preprocessor took 151.91 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2018-11-07 18:11:40,790 INFO L168 Benchmark]: RCFGBuilder took 6435.67 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 297.0 MB). Peak memory consumption was 297.0 MB. Max. memory is 7.1 GB. [2018-11-07 18:11:40,790 INFO L168 Benchmark]: TraceAbstraction took 206633.15 ms. Allocated memory was 2.3 GB in the beginning and 5.6 GB in the end (delta: 3.3 GB). Free memory was 1.9 GB in the beginning and 3.1 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-07 18:11:40,796 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 1416.60 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 249.23 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -907.0 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 151.91 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6435.67 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 297.0 MB). Peak memory consumption was 297.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206633.15 ms. Allocated memory was 2.3 GB in the beginning and 5.6 GB in the end (delta: 3.3 GB). Free memory was 1.9 GB in the beginning and 3.1 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 70). Cancelled while BasicCegarLoop was constructing difference of abstraction (13914states) and FLOYD_HOARE automaton (currently 25 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 54. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 206.5s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 166.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2305 SDtfs, 18000 SDslu, 2876 SDs, 0 SdLazy, 28151 SolverSat, 3251 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 69.7s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1721 GetRequests, 1578 SyntacticMatches, 7 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 859 ImplicationChecksByTransitivity, 32.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13914occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.2s AbstIntTime, 4 AbstIntIterations, 3 AbstIntStrong, 0.9975695717826442 AbsIntWeakeningRatio, 0.09314359637774904 AbsIntAvgWeakeningVarsNumRemoved, 17.379042690815005 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 892 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 21.7s InterpolantComputationTime, 2081 NumberOfCodeBlocks, 2081 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 2485 ConstructedInterpolants, 24 QuantifiedInterpolants, 3163324 SizeOfPredicates, 3 NumberOfNonLiveVariables, 596 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 647/844 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown