java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label01_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 02:41:28,253 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 02:41:28,255 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 02:41:28,271 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 02:41:28,272 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 02:41:28,273 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 02:41:28,274 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 02:41:28,276 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 02:41:28,278 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 02:41:28,278 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 02:41:28,279 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 02:41:28,280 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 02:41:28,280 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 02:41:28,281 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 02:41:28,283 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 02:41:28,283 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 02:41:28,284 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 02:41:28,286 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 02:41:28,288 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 02:41:28,290 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 02:41:28,291 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 02:41:28,293 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 02:41:28,295 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 02:41:28,302 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 02:41:28,302 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 02:41:28,304 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 02:41:28,304 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 02:41:28,305 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 02:41:28,320 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 02:41:28,321 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 02:41:28,322 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 02:41:28,322 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 02:41:28,322 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 02:41:28,322 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 02:41:28,323 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 02:41:28,323 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 02:41:28,323 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 02:41:28,323 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 02:41:28,323 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 02:41:28,323 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 02:41:28,324 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 02:41:28,324 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 02:41:28,324 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 02:41:28,325 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 02:41:28,325 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 02:41:28,325 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 02:41:28,325 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 02:41:28,325 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 02:41:28,326 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 02:41:28,326 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 02:41:28,326 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 02:41:28,326 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 02:41:28,326 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 02:41:28,327 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 02:41:28,327 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 02:41:28,327 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 02:41:28,327 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 02:41:28,327 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 02:41:28,328 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 02:41:28,328 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 02:41:28,329 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 02:41:28,329 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 02:41:28,405 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 02:41:28,428 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 02:41:28,432 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 02:41:28,434 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 02:41:28,434 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 02:41:28,435 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label01_true-unreach-call.c [2018-11-07 02:41:28,501 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a07794a85/33e11b4cfe6b491f83b2555f0be4979a/FLAG2cbbbe807 [2018-11-07 02:41:29,093 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 02:41:29,097 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label01_true-unreach-call.c [2018-11-07 02:41:29,115 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a07794a85/33e11b4cfe6b491f83b2555f0be4979a/FLAG2cbbbe807 [2018-11-07 02:41:29,128 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a07794a85/33e11b4cfe6b491f83b2555f0be4979a [2018-11-07 02:41:29,139 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 02:41:29,141 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 02:41:29,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 02:41:29,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 02:41:29,147 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 02:41:29,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:41:29" (1/1) ... [2018-11-07 02:41:29,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41600c68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:29, skipping insertion in model container [2018-11-07 02:41:29,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:41:29" (1/1) ... [2018-11-07 02:41:29,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 02:41:29,231 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 02:41:29,717 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:41:29,727 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 02:41:29,875 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:41:29,894 INFO L193 MainTranslator]: Completed translation [2018-11-07 02:41:29,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:29 WrapperNode [2018-11-07 02:41:29,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 02:41:29,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 02:41:29,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 02:41:29,896 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 02:41:29,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:29" (1/1) ... [2018-11-07 02:41:30,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:29" (1/1) ... [2018-11-07 02:41:30,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 02:41:30,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 02:41:30,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 02:41:30,019 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 02:41:30,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:29" (1/1) ... [2018-11-07 02:41:30,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:29" (1/1) ... [2018-11-07 02:41:30,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:29" (1/1) ... [2018-11-07 02:41:30,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:29" (1/1) ... [2018-11-07 02:41:30,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:29" (1/1) ... [2018-11-07 02:41:30,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:29" (1/1) ... [2018-11-07 02:41:30,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:29" (1/1) ... [2018-11-07 02:41:30,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 02:41:30,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 02:41:30,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 02:41:30,101 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 02:41:30,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 02:41:30,190 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 02:41:30,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 02:41:30,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 02:41:30,191 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 02:41:30,191 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 02:41:30,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 02:41:30,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 02:41:30,192 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 02:41:30,192 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 02:41:33,379 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 02:41:33,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:41:33 BoogieIcfgContainer [2018-11-07 02:41:33,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 02:41:33,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 02:41:33,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 02:41:33,385 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 02:41:33,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:41:29" (1/3) ... [2018-11-07 02:41:33,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78b61e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:41:33, skipping insertion in model container [2018-11-07 02:41:33,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:29" (2/3) ... [2018-11-07 02:41:33,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78b61e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:41:33, skipping insertion in model container [2018-11-07 02:41:33,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:41:33" (3/3) ... [2018-11-07 02:41:33,388 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label01_true-unreach-call.c [2018-11-07 02:41:33,398 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 02:41:33,406 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 02:41:33,421 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 02:41:33,459 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 02:41:33,460 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 02:41:33,460 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 02:41:33,460 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 02:41:33,460 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 02:41:33,461 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 02:41:33,461 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 02:41:33,461 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 02:41:33,491 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-11-07 02:41:33,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-07 02:41:33,504 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:41:33,506 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] [2018-11-07 02:41:33,508 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:41:33,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:41:33,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1691291748, now seen corresponding path program 1 times [2018-11-07 02:41:33,518 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:41:33,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:41:33,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:41:33,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:41:33,565 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:41:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:41:34,013 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 02:41:34,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:41:34,189 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:41:34,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 02:41:34,190 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:41:34,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 02:41:34,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 02:41:34,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 02:41:34,218 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-11-07 02:41:35,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:41:35,923 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-11-07 02:41:35,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 02:41:35,929 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2018-11-07 02:41:35,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:41:35,949 INFO L225 Difference]: With dead ends: 574 [2018-11-07 02:41:35,950 INFO L226 Difference]: Without dead ends: 356 [2018-11-07 02:41:35,958 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 02:41:35,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-11-07 02:41:36,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-11-07 02:41:36,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-11-07 02:41:36,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-11-07 02:41:36,054 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 60 [2018-11-07 02:41:36,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:41:36,055 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-11-07 02:41:36,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 02:41:36,055 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-11-07 02:41:36,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-11-07 02:41:36,074 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:41:36,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:41:36,076 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:41:36,076 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:41:36,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1506437984, now seen corresponding path program 1 times [2018-11-07 02:41:36,078 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:41:36,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:41:36,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:41:36,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:41:36,081 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:41:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:41:36,490 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:41:36,490 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:41:36,491 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 02:41:36,491 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:41:36,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 02:41:36,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 02:41:36,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 02:41:36,494 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 4 states. [2018-11-07 02:41:38,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:41:38,462 INFO L93 Difference]: Finished difference Result 1282 states and 2328 transitions. [2018-11-07 02:41:38,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 02:41:38,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2018-11-07 02:41:38,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:41:38,476 INFO L225 Difference]: With dead ends: 1282 [2018-11-07 02:41:38,476 INFO L226 Difference]: Without dead ends: 932 [2018-11-07 02:41:38,482 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 02:41:38,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2018-11-07 02:41:38,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 932. [2018-11-07 02:41:38,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 932 states. [2018-11-07 02:41:38,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1469 transitions. [2018-11-07 02:41:38,552 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1469 transitions. Word has length 180 [2018-11-07 02:41:38,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:41:38,553 INFO L480 AbstractCegarLoop]: Abstraction has 932 states and 1469 transitions. [2018-11-07 02:41:38,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 02:41:38,554 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1469 transitions. [2018-11-07 02:41:38,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-11-07 02:41:38,573 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:41:38,574 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:41:38,575 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:41:38,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:41:38,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1775578949, now seen corresponding path program 1 times [2018-11-07 02:41:38,576 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:41:38,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:41:38,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:41:38,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:41:38,578 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:41:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:41:39,008 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:41:39,008 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:41:39,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 02:41:39,008 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:41:39,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 02:41:39,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 02:41:39,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 02:41:39,010 INFO L87 Difference]: Start difference. First operand 932 states and 1469 transitions. Second operand 6 states. [2018-11-07 02:41:42,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:41:42,916 INFO L93 Difference]: Finished difference Result 2162 states and 3509 transitions. [2018-11-07 02:41:42,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 02:41:42,919 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2018-11-07 02:41:42,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:41:42,930 INFO L225 Difference]: With dead ends: 2162 [2018-11-07 02:41:42,931 INFO L226 Difference]: Without dead ends: 1236 [2018-11-07 02:41:42,940 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 02:41:42,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2018-11-07 02:41:42,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1216. [2018-11-07 02:41:42,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1216 states. [2018-11-07 02:41:43,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1766 transitions. [2018-11-07 02:41:43,004 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1766 transitions. Word has length 187 [2018-11-07 02:41:43,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:41:43,005 INFO L480 AbstractCegarLoop]: Abstraction has 1216 states and 1766 transitions. [2018-11-07 02:41:43,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 02:41:43,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1766 transitions. [2018-11-07 02:41:43,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-11-07 02:41:43,014 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:41:43,015 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, 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] [2018-11-07 02:41:43,015 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:41:43,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:41:43,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1634613069, now seen corresponding path program 1 times [2018-11-07 02:41:43,016 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:41:43,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:41:43,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:41:43,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:41:43,018 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:41:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:41:43,341 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 02:41:43,693 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 106 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 02:41:43,693 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:41:43,693 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:41:43,694 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 258 with the following transitions: [2018-11-07 02:41:43,697 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], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [381], [383], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [494], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [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], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [722], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 02:41:43,770 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:41:43,770 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:41:48,056 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 02:41:48,058 INFO L272 AbstractInterpreter]: Visited 132 different actions 132 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 02:41:48,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:41:48,107 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 02:41:52,026 INFO L227 lantSequenceWeakener]: Weakened 236 states. On average, predicates are now at 73.75% of their original sizes. [2018-11-07 02:41:52,026 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 02:41:58,919 INFO L415 sIntCurrentIteration]: We unified 256 AI predicates to 256 [2018-11-07 02:41:58,920 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 02:41:58,921 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 02:41:58,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 02:41:58,921 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:41:58,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 02:41:58,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 02:41:58,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 02:41:58,923 INFO L87 Difference]: Start difference. First operand 1216 states and 1766 transitions. Second operand 11 states. [2018-11-07 02:42:12,709 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:42:50,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:42:50,871 INFO L93 Difference]: Finished difference Result 2575 states and 3779 transitions. [2018-11-07 02:42:50,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 02:42:50,871 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 257 [2018-11-07 02:42:50,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:42:50,880 INFO L225 Difference]: With dead ends: 2575 [2018-11-07 02:42:50,880 INFO L226 Difference]: Without dead ends: 1365 [2018-11-07 02:42:50,887 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 261 GetRequests, 202 SyntacticMatches, 45 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-11-07 02:42:50,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2018-11-07 02:42:50,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1360. [2018-11-07 02:42:50,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1360 states. [2018-11-07 02:42:50,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1918 transitions. [2018-11-07 02:42:50,955 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1918 transitions. Word has length 257 [2018-11-07 02:42:50,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:42:50,956 INFO L480 AbstractCegarLoop]: Abstraction has 1360 states and 1918 transitions. [2018-11-07 02:42:50,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 02:42:50,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1918 transitions. [2018-11-07 02:42:50,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-11-07 02:42:50,963 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:42:50,964 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, 2, 2, 2, 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] [2018-11-07 02:42:50,964 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:42:50,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:42:50,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1971133543, now seen corresponding path program 1 times [2018-11-07 02:42:50,965 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:42:50,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:42:50,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:42:50,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:42:50,966 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:42:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:42:51,510 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:42:51,511 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:42:51,511 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:42:51,511 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 268 with the following transitions: [2018-11-07 02:42:51,512 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], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [381], [383], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [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], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [722], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 02:42:51,519 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:42:51,519 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:42:53,229 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:43:13,155 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 02:43:13,155 INFO L272 AbstractInterpreter]: Visited 135 different actions 780 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 02:43:13,165 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:43:13,165 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 02:43:15,902 INFO L227 lantSequenceWeakener]: Weakened 80 states. On average, predicates are now at 74.89% of their original sizes. [2018-11-07 02:43:15,903 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 02:43:42,589 INFO L415 sIntCurrentIteration]: We unified 266 AI predicates to 266 [2018-11-07 02:43:42,589 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 02:43:42,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 02:43:42,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-11-07 02:43:42,590 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:43:42,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-07 02:43:42,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-07 02:43:42,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2018-11-07 02:43:42,592 INFO L87 Difference]: Start difference. First operand 1360 states and 1918 transitions. Second operand 22 states. Received shutdown request... [2018-11-07 02:45:19,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-07 02:45:19,566 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 02:45:19,572 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 02:45:19,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:45:19 BoogieIcfgContainer [2018-11-07 02:45:19,572 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 02:45:19,573 INFO L168 Benchmark]: Toolchain (without parser) took 230432.69 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 1.6 GB in the end (delta: -208.8 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-07 02:45:19,574 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 02:45:19,574 INFO L168 Benchmark]: CACSL2BoogieTranslator took 753.01 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 02:45:19,575 INFO L168 Benchmark]: Boogie Procedure Inliner took 123.25 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 727.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -813.4 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2018-11-07 02:45:19,576 INFO L168 Benchmark]: Boogie Preprocessor took 81.58 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 02:45:19,577 INFO L168 Benchmark]: RCFGBuilder took 3279.02 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: 103.5 MB). Peak memory consumption was 103.5 MB. Max. memory is 7.1 GB. [2018-11-07 02:45:19,579 INFO L168 Benchmark]: TraceAbstraction took 226191.06 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 1.6 GB in the end (delta: 458.9 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-07 02:45:19,585 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 753.01 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 123.25 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 727.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -813.4 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 81.58 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3279.02 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: 103.5 MB). Peak memory consumption was 103.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226191.06 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 1.6 GB in the end (delta: 458.9 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 163]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 163). Cancelled while BasicCegarLoop was constructing difference of abstraction (1360states) and FLOYD_HOARE automaton (currently 23 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (1272 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 226.1s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 156.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 847 SDtfs, 3952 SDslu, 402 SDs, 0 SdLazy, 4006 SolverSat, 820 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 82.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 554 GetRequests, 423 SyntacticMatches, 80 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 35.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1360occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 26.0s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9958076517296909 AbsIntWeakeningRatio, 0.09961685823754789 AbsIntAvgWeakeningVarsNumRemoved, 110.3103448275862 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 25 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 951 NumberOfCodeBlocks, 951 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 946 ConstructedInterpolants, 0 QuantifiedInterpolants, 656032 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 401/468 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown