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/Problem18_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 21:16:15,107 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 21:16:15,109 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 21:16:15,121 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 21:16:15,121 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 21:16:15,122 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 21:16:15,124 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 21:16:15,126 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 21:16:15,128 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 21:16:15,129 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 21:16:15,130 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 21:16:15,130 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 21:16:15,131 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 21:16:15,132 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 21:16:15,133 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 21:16:15,134 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 21:16:15,135 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 21:16:15,137 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 21:16:15,139 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 21:16:15,141 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 21:16:15,142 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 21:16:15,143 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 21:16:15,146 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 21:16:15,153 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 21:16:15,153 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 21:16:15,154 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 21:16:15,155 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 21:16:15,155 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 21:16:15,171 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 21:16:15,172 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 21:16:15,172 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 21:16:15,173 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 21:16:15,173 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 21:16:15,173 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 21:16:15,173 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 21:16:15,174 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 21:16:15,174 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 21:16:15,174 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 21:16:15,174 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 21:16:15,175 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 21:16:15,175 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 21:16:15,176 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 21:16:15,176 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 21:16:15,176 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 21:16:15,176 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 21:16:15,176 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 21:16:15,177 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 21:16:15,177 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 21:16:15,177 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 21:16:15,177 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 21:16:15,177 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 21:16:15,177 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 21:16:15,178 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 21:16:15,178 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 21:16:15,178 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 21:16:15,178 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 21:16:15,178 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 21:16:15,179 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 21:16:15,179 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 21:16:15,179 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 21:16:15,179 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 21:16:15,179 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 21:16:15,180 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 21:16:15,232 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 21:16:15,249 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 21:16:15,254 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 21:16:15,256 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 21:16:15,256 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 21:16:15,257 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label56_true-unreach-call.c [2018-11-07 21:16:15,321 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa703ccb0/70684b43a8e64c68ab08b8c7e091e8be/FLAG3901195fb [2018-11-07 21:16:16,034 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 21:16:16,035 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label56_true-unreach-call.c [2018-11-07 21:16:16,057 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa703ccb0/70684b43a8e64c68ab08b8c7e091e8be/FLAG3901195fb [2018-11-07 21:16:16,073 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa703ccb0/70684b43a8e64c68ab08b8c7e091e8be [2018-11-07 21:16:16,086 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 21:16:16,089 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 21:16:16,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 21:16:16,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 21:16:16,098 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 21:16:16,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:16:16" (1/1) ... [2018-11-07 21:16:16,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@386f4038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:16:16, skipping insertion in model container [2018-11-07 21:16:16,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:16:16" (1/1) ... [2018-11-07 21:16:16,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 21:16:16,252 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 21:16:17,237 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:16:17,242 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 21:16:17,738 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:16:17,768 INFO L193 MainTranslator]: Completed translation [2018-11-07 21:16:17,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:16:17 WrapperNode [2018-11-07 21:16:17,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 21:16:17,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 21:16:17,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 21:16:17,770 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 21:16:17,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:16:17" (1/1) ... [2018-11-07 21:16:18,027 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:16:17" (1/1) ... [2018-11-07 21:16:18,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 21:16:18,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 21:16:18,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 21:16:18,039 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 21:16:18,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:16:17" (1/1) ... [2018-11-07 21:16:18,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:16:17" (1/1) ... [2018-11-07 21:16:18,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:16:17" (1/1) ... [2018-11-07 21:16:18,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:16:17" (1/1) ... [2018-11-07 21:16:18,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:16:17" (1/1) ... [2018-11-07 21:16:18,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:16:17" (1/1) ... [2018-11-07 21:16:18,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:16:17" (1/1) ... [2018-11-07 21:16:18,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 21:16:18,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 21:16:18,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 21:16:18,307 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 21:16:18,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:16:17" (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 21:16:18,378 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 21:16:18,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 21:16:18,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 21:16:18,379 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 21:16:18,379 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 21:16:18,379 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 21:16:18,380 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 21:16:18,380 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 21:16:18,380 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 21:16:18,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 21:16:18,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 21:16:18,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 21:16:18,381 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 21:16:26,536 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 21:16:26,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:16:26 BoogieIcfgContainer [2018-11-07 21:16:26,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 21:16:26,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 21:16:26,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 21:16:26,541 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 21:16:26,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:16:16" (1/3) ... [2018-11-07 21:16:26,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d8a14f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:16:26, skipping insertion in model container [2018-11-07 21:16:26,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:16:17" (2/3) ... [2018-11-07 21:16:26,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d8a14f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:16:26, skipping insertion in model container [2018-11-07 21:16:26,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:16:26" (3/3) ... [2018-11-07 21:16:26,545 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label56_true-unreach-call.c [2018-11-07 21:16:26,555 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 21:16:26,563 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 21:16:26,578 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 21:16:26,633 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 21:16:26,633 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 21:16:26,633 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 21:16:26,633 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 21:16:26,633 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 21:16:26,633 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 21:16:26,633 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 21:16:26,634 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 21:16:26,675 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 21:16:26,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-11-07 21:16:26,687 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:16:26,690 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:16:26,692 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:16:26,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:16:26,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1650138055, now seen corresponding path program 1 times [2018-11-07 21:16:26,700 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:16:26,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:26,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:16:26,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:26,744 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:16:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:16:27,209 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 21:16:27,212 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:16:27,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 21:16:27,213 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:16:27,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 21:16:27,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 21:16:27,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:16:27,240 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-11-07 21:16:38,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:16:38,941 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-11-07 21:16:38,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 21:16:38,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2018-11-07 21:16:38,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:16:38,984 INFO L225 Difference]: With dead ends: 2974 [2018-11-07 21:16:38,985 INFO L226 Difference]: Without dead ends: 2193 [2018-11-07 21:16:38,997 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:16:39,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-11-07 21:16:39,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2018-11-07 21:16:39,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2193 states. [2018-11-07 21:16:39,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3677 transitions. [2018-11-07 21:16:39,249 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3677 transitions. Word has length 55 [2018-11-07 21:16:39,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:16:39,250 INFO L480 AbstractCegarLoop]: Abstraction has 2193 states and 3677 transitions. [2018-11-07 21:16:39,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 21:16:39,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3677 transitions. [2018-11-07 21:16:39,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-07 21:16:39,258 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:16:39,259 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 21:16:39,259 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:16:39,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:16:39,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1840391000, now seen corresponding path program 1 times [2018-11-07 21:16:39,260 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:16:39,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:39,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:16:39,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:39,262 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:16:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:16:39,534 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:16:39,535 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:16:39,535 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 21:16:39,535 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:16:39,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 21:16:39,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 21:16:39,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 21:16:39,538 INFO L87 Difference]: Start difference. First operand 2193 states and 3677 transitions. Second operand 5 states. [2018-11-07 21:16:48,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:16:48,741 INFO L93 Difference]: Finished difference Result 6600 states and 11248 transitions. [2018-11-07 21:16:48,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:16:48,743 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2018-11-07 21:16:48,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:16:48,781 INFO L225 Difference]: With dead ends: 6600 [2018-11-07 21:16:48,781 INFO L226 Difference]: Without dead ends: 4413 [2018-11-07 21:16:48,789 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 21:16:48,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2018-11-07 21:16:48,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4378. [2018-11-07 21:16:48,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4378 states. [2018-11-07 21:16:48,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6986 transitions. [2018-11-07 21:16:48,941 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6986 transitions. Word has length 125 [2018-11-07 21:16:48,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:16:48,942 INFO L480 AbstractCegarLoop]: Abstraction has 4378 states and 6986 transitions. [2018-11-07 21:16:48,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 21:16:48,942 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6986 transitions. [2018-11-07 21:16:48,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-11-07 21:16:48,949 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:16:48,949 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 21:16:48,950 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:16:48,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:16:48,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1923458833, now seen corresponding path program 1 times [2018-11-07 21:16:48,950 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:16:48,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:48,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:16:48,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:48,955 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:16:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:16:49,539 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:16:49,539 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:16:49,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:16:49,540 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:16:49,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:16:49,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:16:49,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:16:49,541 INFO L87 Difference]: Start difference. First operand 4378 states and 6986 transitions. Second operand 6 states. [2018-11-07 21:16:54,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:16:54,785 INFO L93 Difference]: Finished difference Result 11002 states and 17598 transitions. [2018-11-07 21:16:54,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:16:54,788 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2018-11-07 21:16:54,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:16:54,830 INFO L225 Difference]: With dead ends: 11002 [2018-11-07 21:16:54,830 INFO L226 Difference]: Without dead ends: 6630 [2018-11-07 21:16:54,845 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 [2018-11-07 21:16:54,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6630 states. [2018-11-07 21:16:54,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 6590. [2018-11-07 21:16:54,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-11-07 21:16:55,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 9022 transitions. [2018-11-07 21:16:55,001 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 9022 transitions. Word has length 152 [2018-11-07 21:16:55,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:16:55,001 INFO L480 AbstractCegarLoop]: Abstraction has 6590 states and 9022 transitions. [2018-11-07 21:16:55,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:16:55,002 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 9022 transitions. [2018-11-07 21:16:55,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-11-07 21:16:55,006 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:16:55,007 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 21:16:55,007 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:16:55,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:16:55,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1294774890, now seen corresponding path program 1 times [2018-11-07 21:16:55,008 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:16:55,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:55,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:16:55,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:55,009 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:16:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:16:55,333 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 21:16:55,333 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:16:55,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 21:16:55,333 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:16:55,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 21:16:55,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 21:16:55,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:16:55,335 INFO L87 Difference]: Start difference. First operand 6590 states and 9022 transitions. Second operand 4 states. [2018-11-07 21:17:02,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:17:02,109 INFO L93 Difference]: Finished difference Result 26034 states and 37031 transitions. [2018-11-07 21:17:02,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 21:17:02,109 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 232 [2018-11-07 21:17:02,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:17:02,215 INFO L225 Difference]: With dead ends: 26034 [2018-11-07 21:17:02,215 INFO L226 Difference]: Without dead ends: 19450 [2018-11-07 21:17:02,258 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:17:02,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19450 states. [2018-11-07 21:17:02,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19450 to 19450. [2018-11-07 21:17:02,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19450 states. [2018-11-07 21:17:02,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19450 states to 19450 states and 25983 transitions. [2018-11-07 21:17:02,710 INFO L78 Accepts]: Start accepts. Automaton has 19450 states and 25983 transitions. Word has length 232 [2018-11-07 21:17:02,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:17:02,711 INFO L480 AbstractCegarLoop]: Abstraction has 19450 states and 25983 transitions. [2018-11-07 21:17:02,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 21:17:02,711 INFO L276 IsEmpty]: Start isEmpty. Operand 19450 states and 25983 transitions. [2018-11-07 21:17:02,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-11-07 21:17:02,722 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:17:02,723 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:17:02,723 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:17:02,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:17:02,724 INFO L82 PathProgramCache]: Analyzing trace with hash 2023127083, now seen corresponding path program 1 times [2018-11-07 21:17:02,724 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:17:02,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:17:02,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:17:02,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:17:02,725 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:17:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:17:03,042 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:17:03,043 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:17:03,043 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:17:03,044 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 240 with the following transitions: [2018-11-07 21:17:03,046 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1963], [1965], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 21:17:03,094 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:17:03,094 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:17:03,767 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:17:03,769 INFO L272 AbstractInterpreter]: Visited 112 different actions 112 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 21:17:03,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:17:03,811 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:17:04,553 INFO L227 lantSequenceWeakener]: Weakened 230 states. On average, predicates are now at 77.99% of their original sizes. [2018-11-07 21:17:04,553 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:17:04,931 INFO L415 sIntCurrentIteration]: We unified 238 AI predicates to 238 [2018-11-07 21:17:04,931 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:17:04,932 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:17:04,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 21:17:04,933 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:17:04,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 21:17:04,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 21:17:04,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 21:17:04,934 INFO L87 Difference]: Start difference. First operand 19450 states and 25983 transitions. Second operand 7 states. [2018-11-07 21:17:18,188 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:17:47,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:17:47,163 INFO L93 Difference]: Finished difference Result 39599 states and 52734 transitions. [2018-11-07 21:17:47,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:17:47,163 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 239 [2018-11-07 21:17:47,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:17:47,225 INFO L225 Difference]: With dead ends: 39599 [2018-11-07 21:17:47,225 INFO L226 Difference]: Without dead ends: 20155 [2018-11-07 21:17:47,287 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 239 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 21:17:47,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20155 states. [2018-11-07 21:17:47,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20155 to 20153. [2018-11-07 21:17:47,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20153 states. [2018-11-07 21:17:47,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20153 states to 20153 states and 26698 transitions. [2018-11-07 21:17:47,648 INFO L78 Accepts]: Start accepts. Automaton has 20153 states and 26698 transitions. Word has length 239 [2018-11-07 21:17:47,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:17:47,648 INFO L480 AbstractCegarLoop]: Abstraction has 20153 states and 26698 transitions. [2018-11-07 21:17:47,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 21:17:47,649 INFO L276 IsEmpty]: Start isEmpty. Operand 20153 states and 26698 transitions. [2018-11-07 21:17:47,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-11-07 21:17:47,663 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:17:47,663 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 21:17:47,664 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:17:47,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:17:47,664 INFO L82 PathProgramCache]: Analyzing trace with hash -577564023, now seen corresponding path program 1 times [2018-11-07 21:17:47,665 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:17:47,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:17:47,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:17:47,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:17:47,666 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:17:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:17:48,223 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 21:17:48,392 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 21:17:48,594 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 21:17:49,787 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 203 proven. 197 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 21:17:49,788 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:17:49,788 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:17:49,788 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 427 with the following transitions: [2018-11-07 21:17:49,789 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1963], [1965], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 21:17:49,797 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:17:49,797 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:17:50,582 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:17:50,582 INFO L272 AbstractInterpreter]: Visited 196 different actions 388 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 21:17:50,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:17:50,627 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:17:51,545 INFO L227 lantSequenceWeakener]: Weakened 151 states. On average, predicates are now at 77.6% of their original sizes. [2018-11-07 21:17:51,546 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:17:53,966 INFO L415 sIntCurrentIteration]: We unified 425 AI predicates to 425 [2018-11-07 21:17:53,966 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:17:53,966 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:17:53,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2018-11-07 21:17:53,967 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:17:53,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 21:17:53,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 21:17:53,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-11-07 21:17:53,969 INFO L87 Difference]: Start difference. First operand 20153 states and 26698 transitions. Second operand 16 states. [2018-11-07 21:18:20,521 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:19:07,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:19:07,458 INFO L93 Difference]: Finished difference Result 41141 states and 54287 transitions. [2018-11-07 21:19:07,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-07 21:19:07,458 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 426 [2018-11-07 21:19:07,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:19:07,515 INFO L225 Difference]: With dead ends: 41141 [2018-11-07 21:19:07,515 INFO L226 Difference]: Without dead ends: 20444 [2018-11-07 21:19:07,554 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 433 GetRequests, 363 SyntacticMatches, 48 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2018-11-07 21:19:07,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20444 states. [2018-11-07 21:19:07,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20444 to 20153. [2018-11-07 21:19:07,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20153 states. [2018-11-07 21:19:07,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20153 states to 20153 states and 26690 transitions. [2018-11-07 21:19:07,903 INFO L78 Accepts]: Start accepts. Automaton has 20153 states and 26690 transitions. Word has length 426 [2018-11-07 21:19:07,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:19:07,904 INFO L480 AbstractCegarLoop]: Abstraction has 20153 states and 26690 transitions. [2018-11-07 21:19:07,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 21:19:07,904 INFO L276 IsEmpty]: Start isEmpty. Operand 20153 states and 26690 transitions. [2018-11-07 21:19:07,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2018-11-07 21:19:07,934 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:19:07,935 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:19:07,935 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:19:07,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:19:07,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1518042946, now seen corresponding path program 1 times [2018-11-07 21:19:07,936 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:19:07,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:19:07,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:19:07,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:19:07,937 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:19:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:19:08,577 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:19:09,980 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 221 proven. 180 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 21:19:09,980 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:19:09,980 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:19:09,981 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 768 with the following transitions: [2018-11-07 21:19:09,982 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1963], [1965], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-07 21:19:09,995 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:19:09,995 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:19:11,451 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:19:11,451 INFO L272 AbstractInterpreter]: Visited 537 different actions 1068 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 21:19:11,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:19:11,459 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:19:12,362 INFO L227 lantSequenceWeakener]: Weakened 458 states. On average, predicates are now at 77.78% of their original sizes. [2018-11-07 21:19:12,362 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:19:13,081 INFO L415 sIntCurrentIteration]: We unified 766 AI predicates to 766 [2018-11-07 21:19:13,081 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:19:13,082 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:19:13,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [31] imperfect sequences [8] total 37 [2018-11-07 21:19:13,082 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:19:13,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-07 21:19:13,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-07 21:19:13,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=811, Unknown=0, NotChecked=0, Total=930 [2018-11-07 21:19:13,084 INFO L87 Difference]: Start difference. First operand 20153 states and 26690 transitions. Second operand 31 states. Received shutdown request... [2018-11-07 21:19:45,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-07 21:19:45,693 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 21:19:45,698 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 21:19:45,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:19:45 BoogieIcfgContainer [2018-11-07 21:19:45,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 21:19:45,699 INFO L168 Benchmark]: Toolchain (without parser) took 209611.69 ms. Allocated memory was 1.5 GB in the beginning and 5.6 GB in the end (delta: 4.0 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-11-07 21:19:45,700 INFO L168 Benchmark]: CDTParser took 0.26 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 21:19:45,701 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1679.08 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: 150.6 MB). Peak memory consumption was 150.6 MB. Max. memory is 7.1 GB. [2018-11-07 21:19:45,702 INFO L168 Benchmark]: Boogie Procedure Inliner took 268.87 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -973.7 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 21:19:45,703 INFO L168 Benchmark]: Boogie Preprocessor took 268.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-11-07 21:19:45,703 INFO L168 Benchmark]: RCFGBuilder took 8230.24 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 514.2 MB). Peak memory consumption was 514.2 MB. Max. memory is 7.1 GB. [2018-11-07 21:19:45,704 INFO L168 Benchmark]: TraceAbstraction took 199160.32 ms. Allocated memory was 2.3 GB in the beginning and 5.6 GB in the end (delta: 3.3 GB). Free memory was 1.7 GB in the beginning and 2.7 GB in the end (delta: -998.8 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-07 21:19:45,709 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 1679.08 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: 150.6 MB). Peak memory consumption was 150.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 268.87 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -973.7 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 268.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8230.24 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 514.2 MB). Peak memory consumption was 514.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 199160.32 ms. Allocated memory was 2.3 GB in the beginning and 5.6 GB in the end (delta: 3.3 GB). Free memory was 1.7 GB in the beginning and 2.7 GB in the end (delta: -998.8 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 153]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 153). Cancelled while BasicCegarLoop was constructing difference of abstraction (20153states) and FLOYD_HOARE automaton (currently 23 states, 31 states before enhancement),while ReachableStatesComputation was computing reachable states (546 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 199.0s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 181.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2901 SDtfs, 15825 SDslu, 1231 SDs, 0 SdLazy, 42841 SolverSat, 4948 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 76.9s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1487 GetRequests, 1344 SyntacticMatches, 50 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20153occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.0s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9979525970930725 AbsIntWeakeningRatio, 0.06857942617214835 AbsIntAvgWeakeningVarsNumRemoved, 15.218334499650105 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 6 MinimizatonAttempts, 368 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 1996 NumberOfCodeBlocks, 1996 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1989 ConstructedInterpolants, 0 QuantifiedInterpolants, 3685086 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 866/1245 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown