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_label01_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:40:13,042 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:40:13,044 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:40:13,056 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:40:13,056 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:40:13,057 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:40:13,059 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:40:13,060 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:40:13,062 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:40:13,063 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:40:13,064 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:40:13,064 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:40:13,065 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:40:13,066 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:40:13,067 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:40:13,068 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:40:13,069 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:40:13,070 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:40:13,072 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:40:13,074 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:40:13,075 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:40:13,076 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:40:13,079 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:40:13,079 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:40:13,079 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:40:13,083 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:40:13,084 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:40:13,085 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:40:13,088 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:40:13,089 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:40:13,089 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:40:13,090 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:40:13,090 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:40:13,090 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:40:13,095 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:40:13,095 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:40:13,096 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 [2018-11-12 16:40:13,127 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:40:13,127 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:40:13,128 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:40:13,128 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:40:13,128 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:40:13,129 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:40:13,129 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:40:13,129 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:40:13,129 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:40:13,129 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:40:13,133 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:40:13,133 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:40:13,133 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:40:13,134 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:40:13,134 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:40:13,134 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:40:13,136 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:40:13,136 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:40:13,136 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:40:13,136 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:40:13,137 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:40:13,137 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:40:13,137 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:40:13,137 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:40:13,137 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:40:13,137 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:40:13,138 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:40:13,138 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:40:13,138 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:40:13,139 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:40:13,139 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:40:13,139 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:40:13,139 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:40:13,139 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:40:13,139 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:40:13,210 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:40:13,227 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:40:13,231 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:40:13,233 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:40:13,233 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:40:13,234 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label01_false-unreach-call.c [2018-11-12 16:40:13,294 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07158b175/0e8f873f9ddb4c7bb92ee3bc697d75c0/FLAG262c6b492 [2018-11-12 16:40:13,920 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:40:13,922 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label01_false-unreach-call.c [2018-11-12 16:40:13,938 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07158b175/0e8f873f9ddb4c7bb92ee3bc697d75c0/FLAG262c6b492 [2018-11-12 16:40:13,953 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07158b175/0e8f873f9ddb4c7bb92ee3bc697d75c0 [2018-11-12 16:40:13,964 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:40:13,965 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:40:13,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:40:13,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:40:13,970 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:40:13,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:40:13" (1/1) ... [2018-11-12 16:40:13,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dc0ec14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:13, skipping insertion in model container [2018-11-12 16:40:13,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:40:13" (1/1) ... [2018-11-12 16:40:13,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:40:14,076 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:40:14,958 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:40:14,962 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:40:15,230 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:40:15,252 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:40:15,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:15 WrapperNode [2018-11-12 16:40:15,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:40:15,254 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:40:15,254 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:40:15,254 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:40:15,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:15" (1/1) ... [2018-11-12 16:40:15,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:15" (1/1) ... [2018-11-12 16:40:15,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:40:15,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:40:15,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:40:15,432 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:40:15,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:15" (1/1) ... [2018-11-12 16:40:15,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:15" (1/1) ... [2018-11-12 16:40:15,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:15" (1/1) ... [2018-11-12 16:40:15,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:15" (1/1) ... [2018-11-12 16:40:15,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:15" (1/1) ... [2018-11-12 16:40:15,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:15" (1/1) ... [2018-11-12 16:40:15,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:15" (1/1) ... [2018-11-12 16:40:15,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:40:15,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:40:15,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:40:15,584 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:40:15,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:15" (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 [2018-11-12 16:40:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:40:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:40:15,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:40:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:40:15,658 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:40:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:40:15,658 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:40:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:40:15,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:40:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:40:15,659 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:40:21,367 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:40:21,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:40:21 BoogieIcfgContainer [2018-11-12 16:40:21,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:40:21,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:40:21,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:40:21,374 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:40:21,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:40:13" (1/3) ... [2018-11-12 16:40:21,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7819c306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:40:21, skipping insertion in model container [2018-11-12 16:40:21,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:15" (2/3) ... [2018-11-12 16:40:21,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7819c306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:40:21, skipping insertion in model container [2018-11-12 16:40:21,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:40:21" (3/3) ... [2018-11-12 16:40:21,379 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label01_false-unreach-call.c [2018-11-12 16:40:21,388 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:40:21,396 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:40:21,414 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:40:21,458 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:40:21,458 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:40:21,458 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:40:21,458 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:40:21,459 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:40:21,459 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:40:21,459 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:40:21,459 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:40:21,503 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-12 16:40:21,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-12 16:40:21,514 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:40:21,515 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] [2018-11-12 16:40:21,518 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:40:21,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:40:21,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1628611221, now seen corresponding path program 1 times [2018-11-12 16:40:21,531 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:40:21,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:21,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:40:21,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:21,584 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:40:21,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:40:21,951 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:40:22,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:40:22,040 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:40:22,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:40:22,041 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:40:22,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:40:22,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:40:22,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:40:22,066 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-12 16:40:25,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:40:25,580 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-12 16:40:25,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:40:25,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2018-11-12 16:40:25,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:40:25,605 INFO L225 Difference]: With dead ends: 1156 [2018-11-12 16:40:25,605 INFO L226 Difference]: Without dead ends: 744 [2018-11-12 16:40:25,614 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 [2018-11-12 16:40:25,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-12 16:40:25,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-12 16:40:25,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-12 16:40:25,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1317 transitions. [2018-11-12 16:40:25,713 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1317 transitions. Word has length 33 [2018-11-12 16:40:25,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:40:25,714 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1317 transitions. [2018-11-12 16:40:25,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:40:25,714 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1317 transitions. [2018-11-12 16:40:25,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-11-12 16:40:25,721 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:40:25,721 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:40:25,722 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:40:25,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:40:25,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1521195448, now seen corresponding path program 1 times [2018-11-12 16:40:25,722 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:40:25,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:25,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:40:25,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:25,724 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:40:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:40:26,029 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:40:26,029 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:40:26,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:40:26,029 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:40:26,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:40:26,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:40:26,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:40:26,033 INFO L87 Difference]: Start difference. First operand 744 states and 1317 transitions. Second operand 6 states. [2018-11-12 16:40:35,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:40:35,483 INFO L93 Difference]: Finished difference Result 2959 states and 5503 transitions. [2018-11-12 16:40:35,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 16:40:35,484 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2018-11-12 16:40:35,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:40:35,511 INFO L225 Difference]: With dead ends: 2959 [2018-11-12 16:40:35,512 INFO L226 Difference]: Without dead ends: 2221 [2018-11-12 16:40:35,527 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 16:40:35,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2221 states. [2018-11-12 16:40:35,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2221 to 2175. [2018-11-12 16:40:35,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2175 states. [2018-11-12 16:40:35,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2175 states to 2175 states and 3686 transitions. [2018-11-12 16:40:35,647 INFO L78 Accepts]: Start accepts. Automaton has 2175 states and 3686 transitions. Word has length 109 [2018-11-12 16:40:35,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:40:35,648 INFO L480 AbstractCegarLoop]: Abstraction has 2175 states and 3686 transitions. [2018-11-12 16:40:35,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:40:35,648 INFO L276 IsEmpty]: Start isEmpty. Operand 2175 states and 3686 transitions. [2018-11-12 16:40:35,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-11-12 16:40:35,662 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:40:35,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:40:35,663 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:40:35,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:40:35,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1402365108, now seen corresponding path program 1 times [2018-11-12 16:40:35,664 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:40:35,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:35,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:40:35,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:35,666 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:40:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:40:36,006 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:40:36,413 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:40:36,413 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:40:36,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:40:36,414 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:40:36,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:40:36,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:40:36,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:40:36,417 INFO L87 Difference]: Start difference. First operand 2175 states and 3686 transitions. Second operand 6 states. [2018-11-12 16:40:41,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:40:41,177 INFO L93 Difference]: Finished difference Result 6467 states and 11204 transitions. [2018-11-12 16:40:41,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:40:41,180 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2018-11-12 16:40:41,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:40:41,211 INFO L225 Difference]: With dead ends: 6467 [2018-11-12 16:40:41,211 INFO L226 Difference]: Without dead ends: 4298 [2018-11-12 16:40:41,237 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:40:41,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4298 states. [2018-11-12 16:40:41,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4298 to 4260. [2018-11-12 16:40:41,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4260 states. [2018-11-12 16:40:41,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4260 states to 4260 states and 6472 transitions. [2018-11-12 16:40:41,399 INFO L78 Accepts]: Start accepts. Automaton has 4260 states and 6472 transitions. Word has length 115 [2018-11-12 16:40:41,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:40:41,401 INFO L480 AbstractCegarLoop]: Abstraction has 4260 states and 6472 transitions. [2018-11-12 16:40:41,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:40:41,402 INFO L276 IsEmpty]: Start isEmpty. Operand 4260 states and 6472 transitions. [2018-11-12 16:40:41,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-12 16:40:41,405 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:40:41,405 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:40:41,405 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:40:41,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:40:41,406 INFO L82 PathProgramCache]: Analyzing trace with hash -453027992, now seen corresponding path program 1 times [2018-11-12 16:40:41,406 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:40:41,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:41,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:40:41,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:41,409 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:40:41,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:40:41,928 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:40:41,928 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:40:41,929 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:40:41,930 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 126 with the following transitions: [2018-11-12 16:40:41,932 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], [343], [345], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [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], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:40:41,984 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:40:41,984 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:40:42,662 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:40:43,321 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:40:43,324 INFO L272 AbstractInterpreter]: Visited 99 different actions 284 times. Merged at 5 different actions 9 times. Never widened. Performed 4402 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4402 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:40:43,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:40:43,374 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:40:43,905 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 81.82% of their original sizes. [2018-11-12 16:40:43,905 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:40:45,216 INFO L415 sIntCurrentIteration]: We unified 124 AI predicates to 124 [2018-11-12 16:40:45,217 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:40:45,218 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:40:45,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 21 [2018-11-12 16:40:45,218 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:40:45,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 16:40:45,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 16:40:45,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-11-12 16:40:45,220 INFO L87 Difference]: Start difference. First operand 4260 states and 6472 transitions. Second operand 16 states. [2018-11-12 16:41:26,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:41:26,336 INFO L93 Difference]: Finished difference Result 10948 states and 17071 transitions. [2018-11-12 16:41:26,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 16:41:26,337 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 125 [2018-11-12 16:41:26,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:41:26,368 INFO L225 Difference]: With dead ends: 10948 [2018-11-12 16:41:26,369 INFO L226 Difference]: Without dead ends: 6694 [2018-11-12 16:41:26,399 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 133 GetRequests, 105 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2018-11-12 16:41:26,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6694 states. [2018-11-12 16:41:26,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6694 to 6690. [2018-11-12 16:41:26,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6690 states. [2018-11-12 16:41:26,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6690 states to 6690 states and 9031 transitions. [2018-11-12 16:41:26,601 INFO L78 Accepts]: Start accepts. Automaton has 6690 states and 9031 transitions. Word has length 125 [2018-11-12 16:41:26,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:41:26,601 INFO L480 AbstractCegarLoop]: Abstraction has 6690 states and 9031 transitions. [2018-11-12 16:41:26,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 16:41:26,602 INFO L276 IsEmpty]: Start isEmpty. Operand 6690 states and 9031 transitions. [2018-11-12 16:41:26,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-11-12 16:41:26,605 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:41:26,608 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:41:26,609 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:41:26,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:41:26,609 INFO L82 PathProgramCache]: Analyzing trace with hash -173838551, now seen corresponding path program 1 times [2018-11-12 16:41:26,609 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:41:26,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:26,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:41:26,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:26,612 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:41:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:41:27,592 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:41:27,593 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:41:27,593 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:41:27,593 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 187 with the following transitions: [2018-11-12 16:41:27,594 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], [343], [345], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [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], [837], [841], [845], [849], [853], [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], [1004], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:41:27,601 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:41:27,602 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:41:27,727 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:41:28,158 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:41:28,159 INFO L272 AbstractInterpreter]: Visited 160 different actions 467 times. Merged at 5 different actions 9 times. Never widened. Performed 6605 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6605 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:41:28,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:41:28,198 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:41:28,556 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 81.82% of their original sizes. [2018-11-12 16:41:28,557 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:41:28,971 INFO L415 sIntCurrentIteration]: We unified 185 AI predicates to 185 [2018-11-12 16:41:28,971 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:41:28,972 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:41:28,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 21 [2018-11-12 16:41:28,972 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:41:28,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 16:41:28,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 16:41:28,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2018-11-12 16:41:28,974 INFO L87 Difference]: Start difference. First operand 6690 states and 9031 transitions. Second operand 16 states. [2018-11-12 16:42:03,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:42:03,435 INFO L93 Difference]: Finished difference Result 13822 states and 19925 transitions. [2018-11-12 16:42:03,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-12 16:42:03,435 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 186 [2018-11-12 16:42:03,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:42:03,474 INFO L225 Difference]: With dead ends: 13822 [2018-11-12 16:42:03,474 INFO L226 Difference]: Without dead ends: 8540 [2018-11-12 16:42:03,503 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 194 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=144, Invalid=456, Unknown=0, NotChecked=0, Total=600 [2018-11-12 16:42:03,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8540 states. [2018-11-12 16:42:03,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8540 to 8534. [2018-11-12 16:42:03,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8534 states. [2018-11-12 16:42:03,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8534 states to 8534 states and 11038 transitions. [2018-11-12 16:42:03,712 INFO L78 Accepts]: Start accepts. Automaton has 8534 states and 11038 transitions. Word has length 186 [2018-11-12 16:42:03,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:42:03,712 INFO L480 AbstractCegarLoop]: Abstraction has 8534 states and 11038 transitions. [2018-11-12 16:42:03,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 16:42:03,713 INFO L276 IsEmpty]: Start isEmpty. Operand 8534 states and 11038 transitions. [2018-11-12 16:42:03,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-11-12 16:42:03,718 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:42:03,719 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:42:03,719 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:42:03,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:42:03,720 INFO L82 PathProgramCache]: Analyzing trace with hash 2124999389, now seen corresponding path program 1 times [2018-11-12 16:42:03,720 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:42:03,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:42:03,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:42:03,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:42:03,721 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:42:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:42:04,016 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:42:04,480 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 53 proven. 14 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-12 16:42:04,480 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:42:04,480 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:42:04,481 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 246 with the following transitions: [2018-11-12 16:42:04,481 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], [343], [345], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [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], [728], [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], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:42:04,485 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:42:04,486 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:42:04,605 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:42:04,979 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:42:04,980 INFO L272 AbstractInterpreter]: Visited 136 different actions 395 times. Merged at 5 different actions 9 times. Never widened. Performed 7154 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7154 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:42:05,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:42:05,023 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:42:06,024 INFO L227 lantSequenceWeakener]: Weakened 27 states. On average, predicates are now at 78.11% of their original sizes. [2018-11-12 16:42:06,025 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:42:06,523 INFO L415 sIntCurrentIteration]: We unified 244 AI predicates to 244 [2018-11-12 16:42:06,524 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:42:06,524 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:42:06,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-12 16:42:06,524 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:42:06,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-12 16:42:06,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-12 16:42:06,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2018-11-12 16:42:06,525 INFO L87 Difference]: Start difference. First operand 8534 states and 11038 transitions. Second operand 19 states. [2018-11-12 16:42:41,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:42:41,849 INFO L93 Difference]: Finished difference Result 16950 states and 23359 transitions. [2018-11-12 16:42:41,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-12 16:42:41,850 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 245 [2018-11-12 16:42:41,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:42:41,888 INFO L225 Difference]: With dead ends: 16950 [2018-11-12 16:42:41,888 INFO L226 Difference]: Without dead ends: 10604 [2018-11-12 16:42:41,903 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 255 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=194, Invalid=676, Unknown=0, NotChecked=0, Total=870 [2018-11-12 16:42:41,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10604 states. [2018-11-12 16:42:42,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10604 to 10122. [2018-11-12 16:42:42,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10122 states. [2018-11-12 16:42:42,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10122 states to 10122 states and 12740 transitions. [2018-11-12 16:42:42,146 INFO L78 Accepts]: Start accepts. Automaton has 10122 states and 12740 transitions. Word has length 245 [2018-11-12 16:42:42,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:42:42,147 INFO L480 AbstractCegarLoop]: Abstraction has 10122 states and 12740 transitions. [2018-11-12 16:42:42,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-12 16:42:42,147 INFO L276 IsEmpty]: Start isEmpty. Operand 10122 states and 12740 transitions. [2018-11-12 16:42:42,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-11-12 16:42:42,163 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:42:42,164 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 16:42:42,164 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:42:42,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:42:42,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1489533312, now seen corresponding path program 1 times [2018-11-12 16:42:42,165 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:42:42,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:42:42,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:42:42,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:42:42,166 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:42:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:42:42,650 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-11-12 16:42:43,063 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 157 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:42:43,063 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:42:43,063 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:42:43,064 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 393 with the following transitions: [2018-11-12 16:42:43,064 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], [343], [345], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [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], [837], [841], [845], [849], [853], [857], [861], [865], [868], [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] [2018-11-12 16:42:43,070 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:42:43,070 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:42:43,778 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:42:43,778 INFO L272 AbstractInterpreter]: Visited 248 different actions 492 times. Merged at 5 different actions 7 times. Never widened. Performed 8663 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8663 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:42:43,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:42:43,787 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:42:44,159 INFO L227 lantSequenceWeakener]: Weakened 162 states. On average, predicates are now at 78% of their original sizes. [2018-11-12 16:42:44,160 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:42:46,074 INFO L415 sIntCurrentIteration]: We unified 391 AI predicates to 391 [2018-11-12 16:42:46,074 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:42:46,074 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:42:46,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [8] total 24 [2018-11-12 16:42:46,075 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:42:46,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 16:42:46,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 16:42:46,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-11-12 16:42:46,076 INFO L87 Difference]: Start difference. First operand 10122 states and 12740 transitions. Second operand 18 states. [2018-11-12 16:42:47,719 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:43:02,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:43:02,623 INFO L93 Difference]: Finished difference Result 18141 states and 23633 transitions. [2018-11-12 16:43:02,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-12 16:43:02,623 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 392 [2018-11-12 16:43:02,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:43:02,658 INFO L225 Difference]: With dead ends: 18141 [2018-11-12 16:43:02,658 INFO L226 Difference]: Without dead ends: 10758 [2018-11-12 16:43:02,675 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 407 GetRequests, 314 SyntacticMatches, 61 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2018-11-12 16:43:02,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10758 states. [2018-11-12 16:43:02,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10758 to 10753. [2018-11-12 16:43:02,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10753 states. [2018-11-12 16:43:02,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10753 states to 10753 states and 13411 transitions. [2018-11-12 16:43:02,886 INFO L78 Accepts]: Start accepts. Automaton has 10753 states and 13411 transitions. Word has length 392 [2018-11-12 16:43:02,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:43:02,887 INFO L480 AbstractCegarLoop]: Abstraction has 10753 states and 13411 transitions. [2018-11-12 16:43:02,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 16:43:02,887 INFO L276 IsEmpty]: Start isEmpty. Operand 10753 states and 13411 transitions. [2018-11-12 16:43:02,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-11-12 16:43:02,905 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:43:02,906 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 16:43:02,906 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:43:02,906 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:43:02,906 INFO L82 PathProgramCache]: Analyzing trace with hash 384337861, now seen corresponding path program 1 times [2018-11-12 16:43:02,907 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:43:02,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:43:02,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:43:02,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:43:02,908 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:43:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:43:03,270 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:43:03,784 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 53 proven. 44 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 16:43:03,784 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:43:03,785 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:43:03,785 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 394 with the following transitions: [2018-11-12 16:43:03,785 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], [343], [345], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [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], [837], [840], [841], [845], [849], [853], [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] [2018-11-12 16:43:03,790 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:43:03,790 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:43:06,701 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:43:06,701 INFO L272 AbstractInterpreter]: Visited 256 different actions 2506 times. Merged at 5 different actions 45 times. Widened at 1 different actions 5 times. Performed 44537 root evaluator evaluations with a maximum evaluation depth of 6. Performed 44537 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:43:06,711 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:43:06,711 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:43:07,226 INFO L227 lantSequenceWeakener]: Weakened 40 states. On average, predicates are now at 79.89% of their original sizes. [2018-11-12 16:43:07,226 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:43:07,598 INFO L415 sIntCurrentIteration]: We unified 392 AI predicates to 392 [2018-11-12 16:43:07,599 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:43:07,599 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:43:07,599 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-11-12 16:43:07,599 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:43:07,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-12 16:43:07,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-12 16:43:07,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2018-11-12 16:43:07,602 INFO L87 Difference]: Start difference. First operand 10753 states and 13411 transitions. Second operand 22 states. [2018-11-12 16:43:10,041 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:43:44,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:43:44,572 INFO L93 Difference]: Finished difference Result 18777 states and 24459 transitions. [2018-11-12 16:43:44,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-12 16:43:44,572 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 393 [2018-11-12 16:43:44,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:43:44,606 INFO L225 Difference]: With dead ends: 18777 [2018-11-12 16:43:44,606 INFO L226 Difference]: Without dead ends: 11394 [2018-11-12 16:43:44,622 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 403 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2018-11-12 16:43:44,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11394 states. [2018-11-12 16:43:44,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11394 to 11386. [2018-11-12 16:43:44,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11386 states. [2018-11-12 16:43:44,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11386 states to 11386 states and 14104 transitions. [2018-11-12 16:43:44,827 INFO L78 Accepts]: Start accepts. Automaton has 11386 states and 14104 transitions. Word has length 393 [2018-11-12 16:43:44,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:43:44,828 INFO L480 AbstractCegarLoop]: Abstraction has 11386 states and 14104 transitions. [2018-11-12 16:43:44,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-12 16:43:44,828 INFO L276 IsEmpty]: Start isEmpty. Operand 11386 states and 14104 transitions. [2018-11-12 16:43:44,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2018-11-12 16:43:44,849 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:43:44,849 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 16:43:44,850 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:43:44,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:43:44,850 INFO L82 PathProgramCache]: Analyzing trace with hash -258191547, now seen corresponding path program 1 times [2018-11-12 16:43:44,850 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:43:44,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:43:44,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:43:44,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:43:44,852 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:43:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:43:45,649 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2018-11-12 16:43:45,650 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:43:45,650 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:43:45,650 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 458 with the following transitions: [2018-11-12 16:43:45,650 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], [343], [345], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [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], [837], [841], [845], [849], [853], [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], [1128], [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] [2018-11-12 16:43:45,654 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:43:45,654 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:43:46,034 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:43:46,313 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:43:46,314 INFO L272 AbstractInterpreter]: Visited 249 different actions 738 times. Merged at 7 different actions 15 times. Never widened. Performed 12028 root evaluator evaluations with a maximum evaluation depth of 6. Performed 12028 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 16:43:46,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:43:46,324 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:43:46,324 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:43:46,325 INFO L192 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 [2018-11-12 16:43:46,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:43:46,335 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:43:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:43:46,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:43:47,496 WARN L179 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2018-11-12 16:43:47,954 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 19 [2018-11-12 16:43:48,420 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2018-11-12 16:43:48,420 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:43:49,737 WARN L179 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 23 [2018-11-12 16:43:50,055 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-11-12 16:43:50,356 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 38 [2018-11-12 16:43:52,687 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2018-11-12 16:43:52,707 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:43:52,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2018-11-12 16:43:52,708 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:43:52,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 16:43:52,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 16:43:52,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-11-12 16:43:52,709 INFO L87 Difference]: Start difference. First operand 11386 states and 14104 transitions. Second operand 9 states. [2018-11-12 16:43:53,932 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 Received shutdown request... [2018-11-12 16:43:56,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-12 16:43:56,580 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:43:56,586 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:43:56,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:43:56 BoogieIcfgContainer [2018-11-12 16:43:56,587 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:43:56,588 INFO L168 Benchmark]: Toolchain (without parser) took 222623.21 ms. Allocated memory was 1.5 GB in the beginning and 5.0 GB in the end (delta: 3.5 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.4 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-12 16:43:56,589 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. [2018-11-12 16:43:56,589 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1286.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-12 16:43:56,590 INFO L168 Benchmark]: Boogie Procedure Inliner took 177.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -879.2 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-11-12 16:43:56,591 INFO L168 Benchmark]: Boogie Preprocessor took 152.28 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. [2018-11-12 16:43:56,591 INFO L168 Benchmark]: RCFGBuilder took 5784.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 262.5 MB). Peak memory consumption was 262.5 MB. Max. memory is 7.1 GB. [2018-11-12 16:43:56,592 INFO L168 Benchmark]: TraceAbstraction took 215217.53 ms. Allocated memory was 2.3 GB in the beginning and 5.0 GB in the end (delta: 2.7 GB). Free memory was 2.0 GB in the beginning and 2.9 GB in the end (delta: -883.0 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-11-12 16:43:56,598 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 1286.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 177.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -879.2 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 152.28 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 5784.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 262.5 MB). Peak memory consumption was 262.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215217.53 ms. Allocated memory was 2.3 GB in the beginning and 5.0 GB in the end (delta: 2.7 GB). Free memory was 2.0 GB in the beginning and 2.9 GB in the end (delta: -883.0 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 85). Cancelled while BasicCegarLoop was constructing difference of abstraction (11386states) and FLOYD_HOARE automaton (currently 12 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (1273 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 215.1s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 186.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2444 SDtfs, 26808 SDslu, 1401 SDs, 0 SdLazy, 32967 SolverSat, 4904 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 77.0s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 2347 GetRequests, 2105 SyntacticMatches, 74 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1212 ImplicationChecksByTransitivity, 10.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11386occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.9s AbstIntTime, 6 AbstIntIterations, 5 AbstIntStrong, 0.9976671797568053 AbsIntWeakeningRatio, 0.08832335329341318 AbsIntAvgWeakeningVarsNumRemoved, 11.827095808383234 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 589 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 10.7s InterpolantComputationTime, 2512 NumberOfCodeBlocks, 2512 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 2958 ConstructedInterpolants, 27 QuantifiedInterpolants, 17759627 SizeOfPredicates, 3 NumberOfNonLiveVariables, 642 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 994/1283 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown