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/Problem14_label27_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:52:42,059 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:52:42,061 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:52:42,083 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:52:42,083 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:52:42,084 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:52:42,089 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:52:42,092 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:52:42,094 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:52:42,101 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:52:42,102 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:52:42,102 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:52:42,103 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:52:42,104 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:52:42,107 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:52:42,108 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:52:42,109 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:52:42,110 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:52:42,116 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:52:42,118 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:52:42,119 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:52:42,122 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:52:42,125 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:52:42,125 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:52:42,125 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:52:42,128 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:52:42,129 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:52:42,130 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:52:42,130 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:52:42,134 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:52:42,135 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:52:42,136 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 23:52:42,136 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:52:42,136 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:52:42,139 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:52:42,139 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:52:42,140 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 [2018-10-26 23:52:42,165 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:52:42,165 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:52:42,167 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:52:42,167 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:52:42,167 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:52:42,168 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:52:42,168 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 23:52:42,168 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:52:42,168 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-26 23:52:42,168 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 23:52:42,168 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 23:52:42,171 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:52:42,172 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:52:42,172 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:52:42,173 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:52:42,173 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:52:42,173 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:52:42,173 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:52:42,173 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:52:42,174 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:52:42,175 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:52:42,176 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:52:42,176 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:52:42,176 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:52:42,176 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:52:42,176 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:52:42,177 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:52:42,177 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:52:42,177 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 23:52:42,177 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:52:42,177 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:52:42,178 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:52:42,178 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 23:52:42,178 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-26 23:52:42,253 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:52:42,271 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:52:42,275 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:52:42,277 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:52:42,277 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:52:42,278 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label27_false-unreach-call_false-termination.c [2018-10-26 23:52:42,362 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/088c4b73c/1260b7bde3c2444db9bd4429d73a75b6/FLAG0f4ac7f66 [2018-10-26 23:52:42,993 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:52:42,994 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label27_false-unreach-call_false-termination.c [2018-10-26 23:52:43,014 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/088c4b73c/1260b7bde3c2444db9bd4429d73a75b6/FLAG0f4ac7f66 [2018-10-26 23:52:43,035 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/088c4b73c/1260b7bde3c2444db9bd4429d73a75b6 [2018-10-26 23:52:43,048 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:52:43,050 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 23:52:43,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:52:43,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:52:43,059 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:52:43,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:52:43" (1/1) ... [2018-10-26 23:52:43,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16219d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:43, skipping insertion in model container [2018-10-26 23:52:43,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:52:43" (1/1) ... [2018-10-26 23:52:43,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:52:43,139 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:52:43,618 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:52:43,624 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:52:43,783 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:52:43,800 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:52:43,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:43 WrapperNode [2018-10-26 23:52:43,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:52:43,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:52:43,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:52:43,802 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:52:43,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:43" (1/1) ... [2018-10-26 23:52:43,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:43" (1/1) ... [2018-10-26 23:52:44,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:52:44,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:52:44,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:52:44,021 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:52:44,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:43" (1/1) ... [2018-10-26 23:52:44,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:43" (1/1) ... [2018-10-26 23:52:44,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:43" (1/1) ... [2018-10-26 23:52:44,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:43" (1/1) ... [2018-10-26 23:52:44,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:43" (1/1) ... [2018-10-26 23:52:44,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:43" (1/1) ... [2018-10-26 23:52:44,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:43" (1/1) ... [2018-10-26 23:52:44,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:52:44,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:52:44,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:52:44,162 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:52:44,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:43" (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 [2018-10-26 23:52:44,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:52:44,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:52:44,242 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-26 23:52:44,242 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-26 23:52:44,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:52:44,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:52:44,243 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:52:44,243 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:52:47,979 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:52:47,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:52:47 BoogieIcfgContainer [2018-10-26 23:52:47,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:52:47,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:52:47,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:52:47,985 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:52:47,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:52:43" (1/3) ... [2018-10-26 23:52:47,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1765f8fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:52:47, skipping insertion in model container [2018-10-26 23:52:47,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:43" (2/3) ... [2018-10-26 23:52:47,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1765f8fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:52:47, skipping insertion in model container [2018-10-26 23:52:47,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:52:47" (3/3) ... [2018-10-26 23:52:47,989 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label27_false-unreach-call_false-termination.c [2018-10-26 23:52:47,999 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:52:48,010 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:52:48,028 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:52:48,068 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:52:48,070 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:52:48,070 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:52:48,071 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:52:48,071 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:52:48,071 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:52:48,071 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:52:48,071 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:52:48,098 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-26 23:52:48,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-26 23:52:48,107 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:52:48,108 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] [2018-10-26 23:52:48,111 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:52:48,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:52:48,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1858736316, now seen corresponding path program 1 times [2018-10-26 23:52:48,120 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:52:48,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:48,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:52:48,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:48,171 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:52:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:52:48,598 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 23:52:48,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:52:48,724 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:52:48,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:52:48,725 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:52:48,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:52:48,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:52:48,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:52:48,752 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-26 23:52:50,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:52:50,962 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-26 23:52:50,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:52:50,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2018-10-26 23:52:50,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:52:50,990 INFO L225 Difference]: With dead ends: 691 [2018-10-26 23:52:50,990 INFO L226 Difference]: Without dead ends: 434 [2018-10-26 23:52:50,999 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 [2018-10-26 23:52:51,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-26 23:52:51,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-26 23:52:51,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-26 23:52:51,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 755 transitions. [2018-10-26 23:52:51,084 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 755 transitions. Word has length 36 [2018-10-26 23:52:51,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:52:51,085 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 755 transitions. [2018-10-26 23:52:51,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:52:51,086 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 755 transitions. [2018-10-26 23:52:51,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-26 23:52:51,093 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:52:51,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:52:51,093 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:52:51,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:52:51,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1801704236, now seen corresponding path program 1 times [2018-10-26 23:52:51,094 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:52:51,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:51,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:52:51,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:51,096 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:52:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:52:51,439 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:52:51,440 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:52:51,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:52:51,440 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:52:51,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:52:51,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:52:51,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:52:51,443 INFO L87 Difference]: Start difference. First operand 434 states and 755 transitions. Second operand 6 states. [2018-10-26 23:52:53,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:52:53,850 INFO L93 Difference]: Finished difference Result 1254 states and 2256 transitions. [2018-10-26 23:52:53,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:52:53,852 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2018-10-26 23:52:53,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:52:53,866 INFO L225 Difference]: With dead ends: 1254 [2018-10-26 23:52:53,867 INFO L226 Difference]: Without dead ends: 826 [2018-10-26 23:52:53,869 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 [2018-10-26 23:52:53,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2018-10-26 23:52:53,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 812. [2018-10-26 23:52:53,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 812 states. [2018-10-26 23:52:53,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1377 transitions. [2018-10-26 23:52:53,930 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1377 transitions. Word has length 116 [2018-10-26 23:52:53,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:52:53,931 INFO L481 AbstractCegarLoop]: Abstraction has 812 states and 1377 transitions. [2018-10-26 23:52:53,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:52:53,932 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1377 transitions. [2018-10-26 23:52:53,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-26 23:52:53,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:52:53,937 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:52:53,937 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:52:53,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:52:53,938 INFO L82 PathProgramCache]: Analyzing trace with hash -881737549, now seen corresponding path program 1 times [2018-10-26 23:52:53,938 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:52:53,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:53,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:52:53,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:53,939 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:52:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:52:54,208 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:52:54,209 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:52:54,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:52:54,209 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:52:54,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:52:54,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:52:54,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:52:54,211 INFO L87 Difference]: Start difference. First operand 812 states and 1377 transitions. Second operand 4 states. [2018-10-26 23:52:57,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:52:57,617 INFO L93 Difference]: Finished difference Result 1988 states and 3385 transitions. [2018-10-26 23:52:57,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:52:57,628 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2018-10-26 23:52:57,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:52:57,642 INFO L225 Difference]: With dead ends: 1988 [2018-10-26 23:52:57,642 INFO L226 Difference]: Without dead ends: 1182 [2018-10-26 23:52:57,651 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:52:57,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2018-10-26 23:52:57,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1182. [2018-10-26 23:52:57,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1182 states. [2018-10-26 23:52:57,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1748 transitions. [2018-10-26 23:52:57,708 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1748 transitions. Word has length 149 [2018-10-26 23:52:57,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:52:57,709 INFO L481 AbstractCegarLoop]: Abstraction has 1182 states and 1748 transitions. [2018-10-26 23:52:57,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:52:57,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1748 transitions. [2018-10-26 23:52:57,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-26 23:52:57,718 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:52:57,718 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 23:52:57,718 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:52:57,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:52:57,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1137796060, now seen corresponding path program 1 times [2018-10-26 23:52:57,719 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:52:57,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:57,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:52:57,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:57,721 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:52:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:52:58,164 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-10-26 23:52:58,310 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 58 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-26 23:52:58,311 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:52:58,311 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:52:58,312 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 231 with the following transitions: [2018-10-26 23:52:58,314 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [189], [191], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [538], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-26 23:52:58,385 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:52:58,385 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:53:00,942 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:53:03,628 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:53:03,630 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-26 23:53:03,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:53:03,674 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:53:06,520 INFO L227 lantSequenceWeakener]: Weakened 222 states. On average, predicates are now at 77.73% of their original sizes. [2018-10-26 23:53:06,521 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:53:06,968 INFO L415 sIntCurrentIteration]: We unified 229 AI predicates to 229 [2018-10-26 23:53:06,968 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:53:06,969 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:53:06,969 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-10-26 23:53:06,969 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:53:06,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 23:53:06,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 23:53:06,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-26 23:53:06,971 INFO L87 Difference]: Start difference. First operand 1182 states and 1748 transitions. Second operand 7 states. [2018-10-26 23:53:29,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:53:29,140 INFO L93 Difference]: Finished difference Result 2543 states and 3768 transitions. [2018-10-26 23:53:29,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:53:29,140 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 230 [2018-10-26 23:53:29,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:53:29,150 INFO L225 Difference]: With dead ends: 2543 [2018-10-26 23:53:29,150 INFO L226 Difference]: Without dead ends: 1367 [2018-10-26 23:53:29,154 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 230 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:53:29,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2018-10-26 23:53:29,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 1365. [2018-10-26 23:53:29,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1365 states. [2018-10-26 23:53:29,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1938 transitions. [2018-10-26 23:53:29,206 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1938 transitions. Word has length 230 [2018-10-26 23:53:29,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:53:29,207 INFO L481 AbstractCegarLoop]: Abstraction has 1365 states and 1938 transitions. [2018-10-26 23:53:29,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 23:53:29,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1938 transitions. [2018-10-26 23:53:29,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-10-26 23:53:29,214 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:53:29,215 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:53:29,215 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:53:29,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:53:29,216 INFO L82 PathProgramCache]: Analyzing trace with hash 2002790539, now seen corresponding path program 1 times [2018-10-26 23:53:29,216 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:53:29,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:53:29,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:53:29,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:53:29,217 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:53:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:53:29,722 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 23:53:29,923 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-26 23:53:30,138 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 23:53:30,538 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-10-26 23:53:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 175 proven. 154 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-26 23:53:30,932 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:53:30,932 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:53:30,932 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 316 with the following transitions: [2018-10-26 23:53:30,933 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [189], [191], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [538], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-26 23:53:30,940 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:53:30,941 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:53:33,283 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:53:38,344 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:53:38,345 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-26 23:53:38,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:53:38,351 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:53:41,006 INFO L227 lantSequenceWeakener]: Weakened 101 states. On average, predicates are now at 78.69% of their original sizes. [2018-10-26 23:53:41,006 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:54:29,320 INFO L415 sIntCurrentIteration]: We unified 314 AI predicates to 314 [2018-10-26 23:54:29,321 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:54:29,321 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:54:29,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [12] total 33 [2018-10-26 23:54:29,321 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:54:29,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-26 23:54:29,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-26 23:54:29,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2018-10-26 23:54:29,323 INFO L87 Difference]: Start difference. First operand 1365 states and 1938 transitions. Second operand 23 states. Received shutdown request... [2018-10-26 23:56:36,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-26 23:56:36,801 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 23:56:36,807 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 23:56:36,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 11:56:36 BoogieIcfgContainer [2018-10-26 23:56:36,807 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 23:56:36,808 INFO L168 Benchmark]: Toolchain (without parser) took 233759.53 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 4.0 GB in the end (delta: -2.5 GB). Peak memory consumption was 177.0 MB. Max. memory is 7.1 GB. [2018-10-26 23:56:36,809 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-26 23:56:36,810 INFO L168 Benchmark]: CACSL2BoogieTranslator took 749.54 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-26 23:56:36,811 INFO L168 Benchmark]: Boogie Procedure Inliner took 218.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -842.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-26 23:56:36,813 INFO L168 Benchmark]: Boogie Preprocessor took 140.60 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: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2018-10-26 23:56:36,813 INFO L168 Benchmark]: RCFGBuilder took 3818.18 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 129.1 MB). Peak memory consumption was 129.1 MB. Max. memory is 7.1 GB. [2018-10-26 23:56:36,814 INFO L168 Benchmark]: TraceAbstraction took 228826.01 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 4.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 68.2 MB. Max. memory is 7.1 GB. [2018-10-26 23:56:36,819 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 749.54 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 218.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -842.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 140.60 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: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3818.18 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 129.1 MB). Peak memory consumption was 129.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228826.01 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 4.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 68.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 91). Cancelled while BasicCegarLoop was constructing difference of abstraction (1365states) and FLOYD_HOARE automaton (currently 18 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (919 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 228.7s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 157.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 650 SDtfs, 3227 SDslu, 723 SDs, 0 SdLazy, 5928 SolverSat, 1113 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 59.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 575 GetRequests, 464 SyntacticMatches, 63 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 52.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1365occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9954993727813808 AbsIntWeakeningRatio, 0.10681399631675875 AbsIntAvgWeakeningVarsNumRemoved, 775.8913443830571 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 16 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 846 NumberOfCodeBlocks, 846 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 841 ConstructedInterpolants, 0 QuantifiedInterpolants, 2033699 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 301/531 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown