java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label13_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:56:14,081 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:56:14,087 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:56:14,110 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:56:14,111 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:56:14,114 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:56:14,116 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:56:14,118 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:56:14,121 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:56:14,128 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:56:14,129 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:56:14,130 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:56:14,130 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:56:14,137 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:56:14,138 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:56:14,139 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:56:14,139 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:56:14,144 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:56:14,148 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:56:14,150 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:56:14,153 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:56:14,155 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:56:14,158 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:56:14,170 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:56:14,171 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:56:14,172 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:56:14,174 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:56:14,175 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:56:14,203 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:56:14,203 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:56:14,205 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:56:14,205 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:56:14,205 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:56:14,205 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:56:14,206 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:56:14,206 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:56:14,206 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:56:14,206 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:56:14,207 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:56:14,207 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:56:14,208 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:56:14,209 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:56:14,209 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:56:14,209 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:56:14,209 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:56:14,209 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:56:14,210 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:56:14,210 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:56:14,210 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:56:14,210 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:56:14,210 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:56:14,211 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:56:14,212 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:56:14,212 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:56:14,212 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:56:14,213 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:56:14,213 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:56:14,213 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:56:14,213 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:56:14,214 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:56:14,214 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:56:14,214 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:56:14,271 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:56:14,290 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:56:14,294 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:56:14,296 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:56:14,296 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:56:14,297 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label13_true-unreach-call.c [2018-10-24 21:56:14,358 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/40c620c1e/2360917e7444494fbbc789a201276619/FLAG87fd926a2 [2018-10-24 21:56:15,038 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:56:15,038 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label13_true-unreach-call.c [2018-10-24 21:56:15,060 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/40c620c1e/2360917e7444494fbbc789a201276619/FLAG87fd926a2 [2018-10-24 21:56:15,080 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/40c620c1e/2360917e7444494fbbc789a201276619 [2018-10-24 21:56:15,092 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:56:15,094 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:56:15,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:56:15,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:56:15,101 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:56:15,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:56:15" (1/1) ... [2018-10-24 21:56:15,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd54a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:15, skipping insertion in model container [2018-10-24 21:56:15,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:56:15" (1/1) ... [2018-10-24 21:56:15,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:56:15,226 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:56:15,930 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:56:15,935 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:56:16,219 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:56:16,242 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:56:16,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:16 WrapperNode [2018-10-24 21:56:16,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:56:16,244 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:56:16,244 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:56:16,244 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:56:16,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:16" (1/1) ... [2018-10-24 21:56:16,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:16" (1/1) ... [2018-10-24 21:56:16,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:56:16,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:56:16,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:56:16,575 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:56:16,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:16" (1/1) ... [2018-10-24 21:56:16,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:16" (1/1) ... [2018-10-24 21:56:16,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:16" (1/1) ... [2018-10-24 21:56:16,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:16" (1/1) ... [2018-10-24 21:56:16,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:16" (1/1) ... [2018-10-24 21:56:16,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:16" (1/1) ... [2018-10-24 21:56:16,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:16" (1/1) ... [2018-10-24 21:56:16,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:56:16,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:56:16,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:56:16,720 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:56:16,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 21:56:16,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:56:16,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:56:16,780 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:56:16,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:56:16,780 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:56:16,780 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:56:16,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:56:16,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:56:16,781 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:56:16,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:56:22,833 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:56:22,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:56:22 BoogieIcfgContainer [2018-10-24 21:56:22,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:56:22,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:56:22,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:56:22,840 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:56:22,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:56:15" (1/3) ... [2018-10-24 21:56:22,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2237d213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:56:22, skipping insertion in model container [2018-10-24 21:56:22,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:56:16" (2/3) ... [2018-10-24 21:56:22,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2237d213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:56:22, skipping insertion in model container [2018-10-24 21:56:22,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:56:22" (3/3) ... [2018-10-24 21:56:22,845 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label13_true-unreach-call.c [2018-10-24 21:56:22,855 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:56:22,865 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:56:22,883 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:56:22,940 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:56:22,940 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:56:22,941 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:56:22,941 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:56:22,941 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:56:22,941 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:56:22,941 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:56:22,941 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:56:22,978 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-24 21:56:22,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-24 21:56:22,989 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:56:22,990 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:56:22,992 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:56:22,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:56:22,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1691177667, now seen corresponding path program 1 times [2018-10-24 21:56:23,001 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:56:23,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:56:23,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:56:23,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:56:23,052 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:56:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:56:23,518 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:56:23,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:56:23,649 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:56:23,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:56:23,649 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:56:23,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:56:23,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:56:23,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:56:23,678 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-24 21:56:27,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:56:27,519 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-24 21:56:27,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:56:27,523 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2018-10-24 21:56:27,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:56:27,549 INFO L225 Difference]: With dead ends: 1156 [2018-10-24 21:56:27,550 INFO L226 Difference]: Without dead ends: 744 [2018-10-24 21:56:27,561 INFO L605 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 [2018-10-24 21:56:27,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-24 21:56:27,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-24 21:56:27,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-24 21:56:27,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-10-24 21:56:27,665 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 63 [2018-10-24 21:56:27,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:56:27,666 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-10-24 21:56:27,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:56:27,666 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-10-24 21:56:27,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-24 21:56:27,674 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:56:27,675 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, 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] [2018-10-24 21:56:27,675 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:56:27,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:56:27,676 INFO L82 PathProgramCache]: Analyzing trace with hash 122384276, now seen corresponding path program 1 times [2018-10-24 21:56:27,676 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:56:27,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:56:27,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:56:27,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:56:27,678 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:56:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:56:27,973 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:56:27,973 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:56:27,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:56:27,973 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:56:27,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:56:27,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:56:27,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:56:27,976 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 5 states. [2018-10-24 21:56:33,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:56:33,811 INFO L93 Difference]: Finished difference Result 2194 states and 4083 transitions. [2018-10-24 21:56:33,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:56:33,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2018-10-24 21:56:33,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:56:33,834 INFO L225 Difference]: With dead ends: 2194 [2018-10-24 21:56:33,834 INFO L226 Difference]: Without dead ends: 1456 [2018-10-24 21:56:33,838 INFO L605 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 [2018-10-24 21:56:33,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2018-10-24 21:56:33,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1436. [2018-10-24 21:56:33,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2018-10-24 21:56:33,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2550 transitions. [2018-10-24 21:56:33,929 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2550 transitions. Word has length 133 [2018-10-24 21:56:33,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:56:33,930 INFO L481 AbstractCegarLoop]: Abstraction has 1436 states and 2550 transitions. [2018-10-24 21:56:33,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:56:33,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2550 transitions. [2018-10-24 21:56:33,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-24 21:56:33,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:56:33,936 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:56:33,937 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:56:33,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:56:33,937 INFO L82 PathProgramCache]: Analyzing trace with hash -805750699, now seen corresponding path program 1 times [2018-10-24 21:56:33,937 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:56:33,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:56:33,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:56:33,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:56:33,939 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:56:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:56:34,234 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:56:34,234 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:56:34,234 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:56:34,235 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:56:34,235 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:56:34,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:56:34,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:56:34,236 INFO L87 Difference]: Start difference. First operand 1436 states and 2550 transitions. Second operand 6 states. [2018-10-24 21:56:39,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:56:39,111 INFO L93 Difference]: Finished difference Result 3936 states and 7024 transitions. [2018-10-24 21:56:39,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:56:39,111 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2018-10-24 21:56:39,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:56:39,129 INFO L225 Difference]: With dead ends: 3936 [2018-10-24 21:56:39,130 INFO L226 Difference]: Without dead ends: 2506 [2018-10-24 21:56:39,139 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:56:39,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2018-10-24 21:56:39,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2479. [2018-10-24 21:56:39,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2479 states. [2018-10-24 21:56:39,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3996 transitions. [2018-10-24 21:56:39,227 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3996 transitions. Word has length 162 [2018-10-24 21:56:39,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:56:39,228 INFO L481 AbstractCegarLoop]: Abstraction has 2479 states and 3996 transitions. [2018-10-24 21:56:39,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:56:39,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3996 transitions. [2018-10-24 21:56:39,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-24 21:56:39,233 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:56:39,233 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, 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] [2018-10-24 21:56:39,233 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:56:39,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:56:39,234 INFO L82 PathProgramCache]: Analyzing trace with hash -914566951, now seen corresponding path program 1 times [2018-10-24 21:56:39,234 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:56:39,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:56:39,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:56:39,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:56:39,236 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:56:39,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:56:39,502 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:56:39,503 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:56:39,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:56:39,503 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:56:39,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:56:39,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:56:39,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:56:39,505 INFO L87 Difference]: Start difference. First operand 2479 states and 3996 transitions. Second operand 6 states. [2018-10-24 21:56:43,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:56:43,329 INFO L93 Difference]: Finished difference Result 6050 states and 9896 transitions. [2018-10-24 21:56:43,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:56:43,340 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 180 [2018-10-24 21:56:43,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:56:43,364 INFO L225 Difference]: With dead ends: 6050 [2018-10-24 21:56:43,364 INFO L226 Difference]: Without dead ends: 3577 [2018-10-24 21:56:43,376 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:56:43,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2018-10-24 21:56:43,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 3545. [2018-10-24 21:56:43,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2018-10-24 21:56:43,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4965 transitions. [2018-10-24 21:56:43,473 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4965 transitions. Word has length 180 [2018-10-24 21:56:43,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:56:43,474 INFO L481 AbstractCegarLoop]: Abstraction has 3545 states and 4965 transitions. [2018-10-24 21:56:43,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:56:43,474 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4965 transitions. [2018-10-24 21:56:43,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-24 21:56:43,479 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:56:43,479 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 21:56:43,479 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:56:43,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:56:43,480 INFO L82 PathProgramCache]: Analyzing trace with hash -819200035, now seen corresponding path program 1 times [2018-10-24 21:56:43,480 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:56:43,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:56:43,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:56:43,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:56:43,481 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:56:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:56:43,815 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 123 proven. 54 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:56:43,815 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:56:43,815 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:56:43,816 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 264 with the following transitions: [2018-10-24 21:56:43,818 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [583], [585], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [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], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 21:56:43,920 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:56:43,921 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:56:47,127 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:56:47,128 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 21:56:47,140 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:56:47,140 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:56:49,341 INFO L232 lantSequenceWeakener]: Weakened 255 states. On average, predicates are now at 78.15% of their original sizes. [2018-10-24 21:56:49,342 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:56:49,977 INFO L413 sIntCurrentIteration]: We have 262 unified AI predicates [2018-10-24 21:56:49,977 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:56:49,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:56:49,980 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-10-24 21:56:49,980 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:56:49,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 21:56:49,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 21:56:49,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:56:49,982 INFO L87 Difference]: Start difference. First operand 3545 states and 4965 transitions. Second operand 8 states. [2018-10-24 21:56:53,442 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:57:34,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:57:34,428 INFO L93 Difference]: Finished difference Result 7424 states and 10344 transitions. [2018-10-24 21:57:34,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:57:34,429 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 263 [2018-10-24 21:57:34,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:57:34,444 INFO L225 Difference]: With dead ends: 7424 [2018-10-24 21:57:34,444 INFO L226 Difference]: Without dead ends: 3885 [2018-10-24 21:57:34,456 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 264 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 21:57:34,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2018-10-24 21:57:34,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 3883. [2018-10-24 21:57:34,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3883 states. [2018-10-24 21:57:34,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3883 states to 3883 states and 5311 transitions. [2018-10-24 21:57:34,550 INFO L78 Accepts]: Start accepts. Automaton has 3883 states and 5311 transitions. Word has length 263 [2018-10-24 21:57:34,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:57:34,551 INFO L481 AbstractCegarLoop]: Abstraction has 3883 states and 5311 transitions. [2018-10-24 21:57:34,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 21:57:34,551 INFO L276 IsEmpty]: Start isEmpty. Operand 3883 states and 5311 transitions. [2018-10-24 21:57:34,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2018-10-24 21:57:34,560 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:57:34,560 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, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1] [2018-10-24 21:57:34,561 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:57:34,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:57:34,561 INFO L82 PathProgramCache]: Analyzing trace with hash 478513722, now seen corresponding path program 1 times [2018-10-24 21:57:34,562 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:57:34,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:57:34,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:57:34,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:57:34,564 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:57:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:57:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 240 proven. 115 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-10-24 21:57:35,013 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:57:35,013 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:57:35,014 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 356 with the following transitions: [2018-10-24 21:57:35,014 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [583], [585], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 21:57:35,021 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:57:35,021 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:57:36,235 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:57:52,351 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:57:52,351 INFO L272 AbstractInterpreter]: Visited 139 different actions 537 times. Merged at 5 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:57:52,362 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:57:52,362 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:57:56,289 INFO L232 lantSequenceWeakener]: Weakened 130 states. On average, predicates are now at 79.32% of their original sizes. [2018-10-24 21:57:56,289 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:58:56,266 INFO L413 sIntCurrentIteration]: We have 354 unified AI predicates [2018-10-24 21:58:56,267 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:58:56,267 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:58:56,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [7] total 29 [2018-10-24 21:58:56,267 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:58:56,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-24 21:58:56,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-24 21:58:56,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2018-10-24 21:58:56,269 INFO L87 Difference]: Start difference. First operand 3883 states and 5311 transitions. Second operand 24 states. Received shutdown request... [2018-10-24 22:00:07,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 22:00:07,154 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:00:07,158 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:00:07,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:00:07 BoogieIcfgContainer [2018-10-24 22:00:07,159 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:00:07,160 INFO L168 Benchmark]: Toolchain (without parser) took 232067.26 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 22:00:07,162 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-10-24 22:00:07,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1148.23 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. [2018-10-24 22:00:07,164 INFO L168 Benchmark]: Boogie Procedure Inliner took 330.07 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -844.0 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:00:07,165 INFO L168 Benchmark]: Boogie Preprocessor took 144.60 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: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2018-10-24 22:00:07,166 INFO L168 Benchmark]: RCFGBuilder took 6115.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 262.4 MB). Peak memory consumption was 262.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:00:07,167 INFO L168 Benchmark]: TraceAbstraction took 224322.94 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -700.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 22:00:07,172 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1148.23 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 330.07 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -844.0 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 144.60 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: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6115.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 262.4 MB). Peak memory consumption was 262.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224322.94 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -700.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 175]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 175). Cancelled while BasicCegarLoop was constructing difference of abstraction (3883states) and FLOYD_HOARE automaton (currently 16 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (294 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 224.2s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 133.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 823 SDtfs, 6708 SDslu, 594 SDs, 0 SdLazy, 9081 SolverSat, 2414 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 48.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 661 GetRequests, 515 SyntacticMatches, 86 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 64.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3883occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 20.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9960327263316392 AbsIntWeakeningRatio, 0.09415584415584416 AbsIntAvgWeakeningVarsNumRemoved, 401.3831168831169 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 81 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 1156 NumberOfCodeBlocks, 1156 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1150 ConstructedInterpolants, 0 QuantifiedInterpolants, 998591 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 581/750 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown