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/Problem16_label36_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:54:26,008 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:54:26,010 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:54:26,023 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:54:26,023 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:54:26,024 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:54:26,026 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:54:26,027 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:54:26,029 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:54:26,030 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:54:26,031 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:54:26,031 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:54:26,032 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:54:26,033 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:54:26,034 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:54:26,035 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:54:26,036 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:54:26,038 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:54:26,040 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:54:26,042 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:54:26,043 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:54:26,044 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:54:26,047 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:54:26,047 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:54:26,048 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:54:26,049 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:54:26,050 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:54:26,051 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:54:26,055 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:54:26,056 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:54:26,057 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:54:26,058 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:54:26,058 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:54:26,059 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:54:26,060 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:54:26,060 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:54:26,065 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 20:54:26,097 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:54:26,098 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:54:26,099 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:54:26,099 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:54:26,099 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:54:26,099 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:54:26,099 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:54:26,100 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:54:26,100 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:54:26,100 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:54:26,101 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:54:26,101 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:54:26,101 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:54:26,105 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:54:26,105 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:54:26,105 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:54:26,105 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:54:26,106 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:54:26,106 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:54:26,106 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:54:26,106 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:54:26,106 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:54:26,107 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:54:26,107 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:54:26,107 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:54:26,107 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:54:26,107 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:54:26,107 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:54:26,110 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:54:26,110 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:54:26,111 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:54:26,111 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:54:26,111 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:54:26,111 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:54:26,112 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:54:26,178 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:54:26,196 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:54:26,200 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:54:26,202 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:54:26,203 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:54:26,204 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label36_true-unreach-call.c [2018-11-07 20:54:26,277 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2993ccee/d10200ced6b94bac8bd826c0edbde319/FLAGbaddd6c4c [2018-11-07 20:54:27,008 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:54:27,008 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label36_true-unreach-call.c [2018-11-07 20:54:27,031 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2993ccee/d10200ced6b94bac8bd826c0edbde319/FLAGbaddd6c4c [2018-11-07 20:54:27,047 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2993ccee/d10200ced6b94bac8bd826c0edbde319 [2018-11-07 20:54:27,060 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:54:27,062 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:54:27,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:54:27,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:54:27,067 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:54:27,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:54:27" (1/1) ... [2018-11-07 20:54:27,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c60cb25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:27, skipping insertion in model container [2018-11-07 20:54:27,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:54:27" (1/1) ... [2018-11-07 20:54:27,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:54:27,174 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:54:27,967 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:54:27,972 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:54:28,318 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:54:28,340 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:54:28,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:28 WrapperNode [2018-11-07 20:54:28,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:54:28,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:54:28,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:54:28,342 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:54:28,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:28" (1/1) ... [2018-11-07 20:54:28,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:28" (1/1) ... [2018-11-07 20:54:28,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:54:28,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:54:28,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:54:28,550 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:54:28,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:28" (1/1) ... [2018-11-07 20:54:28,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:28" (1/1) ... [2018-11-07 20:54:28,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:28" (1/1) ... [2018-11-07 20:54:28,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:28" (1/1) ... [2018-11-07 20:54:28,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:28" (1/1) ... [2018-11-07 20:54:28,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:28" (1/1) ... [2018-11-07 20:54:28,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:28" (1/1) ... [2018-11-07 20:54:28,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:54:28,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:54:28,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:54:28,700 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:54:28,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:28" (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 20:54:28,776 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:54:28,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:54:28,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:54:28,777 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:54:28,777 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:54:28,778 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:54:28,778 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:54:28,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:54:28,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:54:28,779 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:54:28,779 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:54:34,680 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:54:34,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:54:34 BoogieIcfgContainer [2018-11-07 20:54:34,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:54:34,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:54:34,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:54:34,687 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:54:34,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:54:27" (1/3) ... [2018-11-07 20:54:34,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c4f6fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:54:34, skipping insertion in model container [2018-11-07 20:54:34,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:28" (2/3) ... [2018-11-07 20:54:34,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c4f6fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:54:34, skipping insertion in model container [2018-11-07 20:54:34,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:54:34" (3/3) ... [2018-11-07 20:54:34,692 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label36_true-unreach-call.c [2018-11-07 20:54:34,703 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:54:34,716 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:54:34,735 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:54:34,790 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:54:34,791 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:54:34,791 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:54:34,791 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:54:34,791 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:54:34,792 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:54:34,792 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:54:34,792 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:54:34,824 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 20:54:34,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-07 20:54:34,834 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:54:34,835 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:54:34,837 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:54:34,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:54:34,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1717758157, now seen corresponding path program 1 times [2018-11-07 20:54:34,846 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:54:34,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:54:34,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:54:34,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:54:34,901 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:54:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:54:35,320 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:54:35,421 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 20:54:35,424 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:54:35,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:54:35,424 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:54:35,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:54:35,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:54:35,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:54:35,453 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 20:54:38,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:54:38,866 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 20:54:38,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:54:38,870 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2018-11-07 20:54:38,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:54:38,896 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 20:54:38,896 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 20:54:38,908 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:54:38,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 20:54:39,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 20:54:39,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 20:54:39,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1329 transitions. [2018-11-07 20:54:39,023 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1329 transitions. Word has length 43 [2018-11-07 20:54:39,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:54:39,024 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1329 transitions. [2018-11-07 20:54:39,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:54:39,024 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1329 transitions. [2018-11-07 20:54:39,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-11-07 20:54:39,037 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:54:39,037 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:39,038 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:54:39,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:54:39,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1480398480, now seen corresponding path program 1 times [2018-11-07 20:54:39,038 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:54:39,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:54:39,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:54:39,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:54:39,040 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:54:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:54:39,549 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:54:39,550 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:54:39,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:54:39,550 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:54:39,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:54:39,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:54:39,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:54:39,555 INFO L87 Difference]: Start difference. First operand 744 states and 1329 transitions. Second operand 6 states. [2018-11-07 20:54:46,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:54:46,433 INFO L93 Difference]: Finished difference Result 2183 states and 3908 transitions. [2018-11-07 20:54:46,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:54:46,440 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2018-11-07 20:54:46,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:54:46,456 INFO L225 Difference]: With dead ends: 2183 [2018-11-07 20:54:46,456 INFO L226 Difference]: Without dead ends: 1445 [2018-11-07 20:54:46,463 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:54:46,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2018-11-07 20:54:46,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1424. [2018-11-07 20:54:46,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2018-11-07 20:54:46,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2239 transitions. [2018-11-07 20:54:46,543 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2239 transitions. Word has length 151 [2018-11-07 20:54:46,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:54:46,545 INFO L480 AbstractCegarLoop]: Abstraction has 1424 states and 2239 transitions. [2018-11-07 20:54:46,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:54:46,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2239 transitions. [2018-11-07 20:54:46,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-11-07 20:54:46,557 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:54:46,561 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:54:46,561 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:54:46,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:54:46,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1587453149, now seen corresponding path program 1 times [2018-11-07 20:54:46,562 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:54:46,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:54:46,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:54:46,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:54:46,564 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:54:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:54:46,802 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:54:46,802 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:54:46,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:54:46,803 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:54:46,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:54:46,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:54:46,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:54:46,804 INFO L87 Difference]: Start difference. First operand 1424 states and 2239 transitions. Second operand 6 states. [2018-11-07 20:54:51,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:54:51,511 INFO L93 Difference]: Finished difference Result 3902 states and 6351 transitions. [2018-11-07 20:54:51,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:54:51,511 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-11-07 20:54:51,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:54:51,527 INFO L225 Difference]: With dead ends: 3902 [2018-11-07 20:54:51,528 INFO L226 Difference]: Without dead ends: 2484 [2018-11-07 20:54:51,533 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:54:51,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2018-11-07 20:54:51,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2474. [2018-11-07 20:54:51,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2018-11-07 20:54:51,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3744 transitions. [2018-11-07 20:54:51,608 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3744 transitions. Word has length 154 [2018-11-07 20:54:51,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:54:51,609 INFO L480 AbstractCegarLoop]: Abstraction has 2474 states and 3744 transitions. [2018-11-07 20:54:51,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:54:51,609 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3744 transitions. [2018-11-07 20:54:51,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-11-07 20:54:51,615 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:54:51,616 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:54:51,616 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:54:51,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:54:51,617 INFO L82 PathProgramCache]: Analyzing trace with hash 644165232, now seen corresponding path program 1 times [2018-11-07 20:54:51,617 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:54:51,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:54:51,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:54:51,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:54:51,618 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:54:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:54:51,915 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:54:52,095 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 72 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:54:52,095 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:54:52,096 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:54:52,096 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 271 with the following transitions: [2018-11-07 20:54:52,099 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [423], [425], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:54:52,148 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:54:52,148 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:54:52,888 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:54:52,890 INFO L272 AbstractInterpreter]: Visited 121 different actions 121 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 20:54:52,933 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:54:52,933 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:54:53,964 INFO L227 lantSequenceWeakener]: Weakened 248 states. On average, predicates are now at 77.83% of their original sizes. [2018-11-07 20:54:53,964 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:54:56,331 INFO L415 sIntCurrentIteration]: We unified 269 AI predicates to 269 [2018-11-07 20:54:56,331 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:54:56,332 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:54:56,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 20:54:56,332 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:54:56,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 20:54:56,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 20:54:56,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:54:56,334 INFO L87 Difference]: Start difference. First operand 2474 states and 3744 transitions. Second operand 10 states. [2018-11-07 20:55:00,930 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:55:23,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:55:23,496 INFO L93 Difference]: Finished difference Result 5285 states and 7974 transitions. [2018-11-07 20:55:23,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 20:55:23,496 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 270 [2018-11-07 20:55:23,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:55:23,512 INFO L225 Difference]: With dead ends: 5285 [2018-11-07 20:55:23,513 INFO L226 Difference]: Without dead ends: 2817 [2018-11-07 20:55:23,523 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 273 GetRequests, 218 SyntacticMatches, 43 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-07 20:55:23,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2018-11-07 20:55:23,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2812. [2018-11-07 20:55:23,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2812 states. [2018-11-07 20:55:23,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4089 transitions. [2018-11-07 20:55:23,604 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4089 transitions. Word has length 270 [2018-11-07 20:55:23,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:55:23,605 INFO L480 AbstractCegarLoop]: Abstraction has 2812 states and 4089 transitions. [2018-11-07 20:55:23,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 20:55:23,605 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4089 transitions. [2018-11-07 20:55:23,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-11-07 20:55:23,614 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:55:23,614 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:55:23,615 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:55:23,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:55:23,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1956339661, now seen corresponding path program 1 times [2018-11-07 20:55:23,616 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:55:23,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:55:23,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:55:23,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:55:23,618 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:55:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:55:24,269 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 203 proven. 110 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-11-07 20:55:24,271 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:55:24,271 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:55:24,271 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 363 with the following transitions: [2018-11-07 20:55:24,272 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [423], [425], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:55:24,282 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:55:24,282 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:55:24,404 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:55:24,727 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:55:24,727 INFO L272 AbstractInterpreter]: Visited 125 different actions 362 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:55:24,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:55:24,738 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:55:26,163 INFO L227 lantSequenceWeakener]: Weakened 118 states. On average, predicates are now at 77.85% of their original sizes. [2018-11-07 20:55:26,163 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:55:27,603 INFO L415 sIntCurrentIteration]: We unified 361 AI predicates to 361 [2018-11-07 20:55:27,604 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:55:27,604 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:55:27,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-07 20:55:27,605 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:55:27,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 20:55:27,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 20:55:27,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2018-11-07 20:55:27,606 INFO L87 Difference]: Start difference. First operand 2812 states and 4089 transitions. Second operand 18 states. [2018-11-07 20:55:59,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:55:59,857 INFO L93 Difference]: Finished difference Result 6454 states and 9413 transitions. [2018-11-07 20:55:59,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-07 20:55:59,857 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 362 [2018-11-07 20:55:59,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:55:59,878 INFO L225 Difference]: With dead ends: 6454 [2018-11-07 20:55:59,878 INFO L226 Difference]: Without dead ends: 3986 [2018-11-07 20:55:59,888 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 371 GetRequests, 330 SyntacticMatches, 15 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2018-11-07 20:55:59,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3986 states. [2018-11-07 20:55:59,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3986 to 3756. [2018-11-07 20:55:59,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3756 states. [2018-11-07 20:55:59,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3756 states to 3756 states and 5082 transitions. [2018-11-07 20:55:59,984 INFO L78 Accepts]: Start accepts. Automaton has 3756 states and 5082 transitions. Word has length 362 [2018-11-07 20:55:59,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:55:59,985 INFO L480 AbstractCegarLoop]: Abstraction has 3756 states and 5082 transitions. [2018-11-07 20:55:59,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 20:55:59,985 INFO L276 IsEmpty]: Start isEmpty. Operand 3756 states and 5082 transitions. [2018-11-07 20:55:59,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-11-07 20:55:59,994 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:55:59,995 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:55:59,995 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:55:59,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:55:59,996 INFO L82 PathProgramCache]: Analyzing trace with hash -41214293, now seen corresponding path program 1 times [2018-11-07 20:55:59,996 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:55:59,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:55:59,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:55:59,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:55:59,997 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:56:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:56:00,842 WARN L179 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-07 20:56:01,080 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-07 20:56:01,670 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 227 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 20:56:01,671 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:56:01,671 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:56:01,671 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 399 with the following transitions: [2018-11-07 20:56:01,671 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [423], [425], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:56:01,676 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:56:01,676 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:56:01,789 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:56:02,126 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:56:02,127 INFO L272 AbstractInterpreter]: Visited 137 different actions 398 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:56:02,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:56:02,156 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:56:03,392 INFO L227 lantSequenceWeakener]: Weakened 118 states. On average, predicates are now at 77.85% of their original sizes. [2018-11-07 20:56:03,393 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:56:03,875 INFO L415 sIntCurrentIteration]: We unified 397 AI predicates to 397 [2018-11-07 20:56:03,876 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:56:03,876 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:56:03,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [13] total 30 [2018-11-07 20:56:03,877 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:56:03,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 20:56:03,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 20:56:03,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2018-11-07 20:56:03,878 INFO L87 Difference]: Start difference. First operand 3756 states and 5082 transitions. Second operand 19 states. [2018-11-07 20:56:58,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:56:58,252 INFO L93 Difference]: Finished difference Result 7689 states and 10829 transitions. [2018-11-07 20:56:58,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 20:56:58,252 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 398 [2018-11-07 20:56:58,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:56:58,272 INFO L225 Difference]: With dead ends: 7689 [2018-11-07 20:56:58,273 INFO L226 Difference]: Without dead ends: 4877 [2018-11-07 20:56:58,283 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 408 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=194, Invalid=676, Unknown=0, NotChecked=0, Total=870 [2018-11-07 20:56:58,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4877 states. [2018-11-07 20:56:58,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4877 to 4402. [2018-11-07 20:56:58,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4402 states. [2018-11-07 20:56:58,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4402 states to 4402 states and 5768 transitions. [2018-11-07 20:56:58,388 INFO L78 Accepts]: Start accepts. Automaton has 4402 states and 5768 transitions. Word has length 398 [2018-11-07 20:56:58,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:56:58,389 INFO L480 AbstractCegarLoop]: Abstraction has 4402 states and 5768 transitions. [2018-11-07 20:56:58,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-07 20:56:58,389 INFO L276 IsEmpty]: Start isEmpty. Operand 4402 states and 5768 transitions. [2018-11-07 20:56:58,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2018-11-07 20:56:58,404 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:56:58,405 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:56:58,405 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:56:58,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:56:58,406 INFO L82 PathProgramCache]: Analyzing trace with hash 907055819, now seen corresponding path program 1 times [2018-11-07 20:56:58,406 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:56:58,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:58,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:56:58,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:58,407 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:56:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:56:59,011 WARN L179 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-11-07 20:56:59,206 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-11-07 20:57:00,038 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 218 proven. 123 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-11-07 20:57:00,038 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:57:00,038 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:57:00,039 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 511 with the following transitions: [2018-11-07 20:57:00,039 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [423], [425], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:57:00,048 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:57:00,048 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:57:00,458 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:57:00,458 INFO L272 AbstractInterpreter]: Visited 249 different actions 494 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:57:00,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:00,467 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:57:01,612 INFO L227 lantSequenceWeakener]: Weakened 280 states. On average, predicates are now at 77.89% of their original sizes. [2018-11-07 20:57:01,612 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:57:02,415 INFO L415 sIntCurrentIteration]: We unified 509 AI predicates to 509 [2018-11-07 20:57:02,415 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:57:02,416 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:57:02,416 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [8] total 25 [2018-11-07 20:57:02,416 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:57:02,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 20:57:02,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 20:57:02,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2018-11-07 20:57:02,418 INFO L87 Difference]: Start difference. First operand 4402 states and 5768 transitions. Second operand 19 states. [2018-11-07 20:57:04,163 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:57:24,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:57:24,428 INFO L93 Difference]: Finished difference Result 8195 states and 11177 transitions. [2018-11-07 20:57:24,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-07 20:57:24,428 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 510 [2018-11-07 20:57:24,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:57:24,448 INFO L225 Difference]: With dead ends: 8195 [2018-11-07 20:57:24,449 INFO L226 Difference]: Without dead ends: 5038 [2018-11-07 20:57:24,459 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 527 GetRequests, 461 SyntacticMatches, 31 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=249, Invalid=1083, Unknown=0, NotChecked=0, Total=1332 [2018-11-07 20:57:24,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5038 states. [2018-11-07 20:57:24,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5038 to 5033. [2018-11-07 20:57:24,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5033 states. [2018-11-07 20:57:24,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5033 states to 5033 states and 6433 transitions. [2018-11-07 20:57:24,573 INFO L78 Accepts]: Start accepts. Automaton has 5033 states and 6433 transitions. Word has length 510 [2018-11-07 20:57:24,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:57:24,574 INFO L480 AbstractCegarLoop]: Abstraction has 5033 states and 6433 transitions. [2018-11-07 20:57:24,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-07 20:57:24,575 INFO L276 IsEmpty]: Start isEmpty. Operand 5033 states and 6433 transitions. [2018-11-07 20:57:24,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2018-11-07 20:57:24,583 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:57:24,584 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:24,584 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:57:24,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:24,585 INFO L82 PathProgramCache]: Analyzing trace with hash 939697211, now seen corresponding path program 1 times [2018-11-07 20:57:24,585 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:57:24,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:24,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:57:24,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:24,586 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:57:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:57:25,080 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 114 proven. 260 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 20:57:25,081 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:57:25,081 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:57:25,081 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 519 with the following transitions: [2018-11-07 20:57:25,082 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [423], [425], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:57:25,087 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:57:25,087 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:57:27,814 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:57:27,814 INFO L272 AbstractInterpreter]: Visited 257 different actions 2516 times. Merged at 5 different actions 45 times. Widened at 1 different actions 5 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:57:27,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:27,821 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:57:28,425 INFO L227 lantSequenceWeakener]: Weakened 64 states. On average, predicates are now at 79.62% of their original sizes. [2018-11-07 20:57:28,425 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:57:28,780 INFO L415 sIntCurrentIteration]: We unified 517 AI predicates to 517 [2018-11-07 20:57:28,780 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:57:28,781 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:57:28,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-11-07 20:57:28,781 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:57:28,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-07 20:57:28,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-07 20:57:28,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2018-11-07 20:57:28,784 INFO L87 Difference]: Start difference. First operand 5033 states and 6433 transitions. Second operand 22 states. [2018-11-07 20:57:31,460 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:58:01,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:58:01,070 INFO L93 Difference]: Finished difference Result 8831 states and 11856 transitions. [2018-11-07 20:58:01,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-07 20:58:01,070 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 518 [2018-11-07 20:58:01,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:58:01,089 INFO L225 Difference]: With dead ends: 8831 [2018-11-07 20:58:01,090 INFO L226 Difference]: Without dead ends: 5674 [2018-11-07 20:58:01,099 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 528 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2018-11-07 20:58:01,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5674 states. [2018-11-07 20:58:01,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5674 to 5666. [2018-11-07 20:58:01,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5666 states. [2018-11-07 20:58:01,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5666 states to 5666 states and 7107 transitions. [2018-11-07 20:58:01,230 INFO L78 Accepts]: Start accepts. Automaton has 5666 states and 7107 transitions. Word has length 518 [2018-11-07 20:58:01,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:58:01,231 INFO L480 AbstractCegarLoop]: Abstraction has 5666 states and 7107 transitions. [2018-11-07 20:58:01,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-07 20:58:01,231 INFO L276 IsEmpty]: Start isEmpty. Operand 5666 states and 7107 transitions. [2018-11-07 20:58:01,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2018-11-07 20:58:01,244 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:58:01,245 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-07 20:58:01,245 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:58:01,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:58:01,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1606710642, now seen corresponding path program 1 times [2018-11-07 20:58:01,246 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:58:01,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:58:01,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:58:01,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:58:01,247 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:58:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:58:02,711 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 244 proven. 223 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-11-07 20:58:02,711 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:58:02,711 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:58:02,712 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 603 with the following transitions: [2018-11-07 20:58:02,712 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [423], [425], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:58:02,715 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:58:02,715 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:58:02,762 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:58:03,912 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:58:03,912 INFO L272 AbstractInterpreter]: Visited 250 different actions 995 times. Merged at 7 different actions 28 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 20:58:03,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:58:03,922 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:58:04,353 INFO L227 lantSequenceWeakener]: Weakened 599 states. On average, predicates are now at 77.5% of their original sizes. [2018-11-07 20:58:04,354 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:58:04,449 INFO L415 sIntCurrentIteration]: We unified 601 AI predicates to 601 [2018-11-07 20:58:04,449 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:58:04,449 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:58:04,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 21 [2018-11-07 20:58:04,450 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:58:04,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 20:58:04,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 20:58:04,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:58:04,451 INFO L87 Difference]: Start difference. First operand 5666 states and 7107 transitions. Second operand 10 states. Received shutdown request... [2018-11-07 20:58:06,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-07 20:58:06,102 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:58:06,107 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:58:06,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:58:06 BoogieIcfgContainer [2018-11-07 20:58:06,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:58:06,108 INFO L168 Benchmark]: Toolchain (without parser) took 219047.47 ms. Allocated memory was 1.5 GB in the beginning and 5.0 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -216.7 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-11-07 20:58:06,109 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:58:06,110 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1278.28 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-07 20:58:06,110 INFO L168 Benchmark]: Boogie Procedure Inliner took 207.62 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 730.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -833.9 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2018-11-07 20:58:06,111 INFO L168 Benchmark]: Boogie Preprocessor took 149.97 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:58:06,112 INFO L168 Benchmark]: RCFGBuilder took 5982.40 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: 254.5 MB). Peak memory consumption was 254.5 MB. Max. memory is 7.1 GB. [2018-11-07 20:58:06,113 INFO L168 Benchmark]: TraceAbstraction took 211424.00 ms. Allocated memory was 2.3 GB in the beginning and 5.0 GB in the end (delta: 2.7 GB). Free memory was 1.9 GB in the beginning and 1.6 GB in the end (delta: 288.7 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-11-07 20:58:06,117 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1278.28 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 207.62 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 730.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -833.9 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 149.97 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5982.40 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: 254.5 MB). Peak memory consumption was 254.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211424.00 ms. Allocated memory was 2.3 GB in the beginning and 5.0 GB in the end (delta: 2.7 GB). Free memory was 1.9 GB in the beginning and 1.6 GB in the end (delta: 288.7 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 115). Cancelled while BasicCegarLoop was constructing difference of abstraction (5666states) and FLOYD_HOARE automaton (currently 13 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (211 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 211.3s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 184.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2373 SDtfs, 20771 SDslu, 1568 SDs, 0 SdLazy, 29356 SolverSat, 3671 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 73.7s Time, PredicateUnifierStatistics: 12 DeclaredPredicates, 2740 GetRequests, 2485 SyntacticMatches, 93 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1515 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5666occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.1s AbstIntTime, 6 AbstIntIterations, 6 AbstIntStrong, 0.9977919609959846 AbsIntWeakeningRatio, 0.07234363225320271 AbsIntAvgWeakeningVarsNumRemoved, 13.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 754 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 3008 NumberOfCodeBlocks, 3008 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 2999 ConstructedInterpolants, 0 QuantifiedInterpolants, 10002267 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 1822/2754 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown