java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label03_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:40:24,269 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:40:24,271 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:40:24,284 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:40:24,284 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:40:24,285 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:40:24,287 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:40:24,289 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:40:24,290 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:40:24,291 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:40:24,292 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:40:24,292 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:40:24,293 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:40:24,294 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:40:24,295 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:40:24,296 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:40:24,297 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:40:24,302 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:40:24,304 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:40:24,306 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:40:24,307 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:40:24,308 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:40:24,310 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:40:24,311 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:40:24,311 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:40:24,312 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:40:24,313 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:40:24,314 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:40:24,314 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:40:24,315 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:40:24,316 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:40:24,316 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:40:24,317 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:40:24,317 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:40:24,318 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:40:24,318 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:40:24,319 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 16:40:24,342 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:40:24,342 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:40:24,344 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:40:24,344 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:40:24,344 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:40:24,344 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:40:24,344 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:40:24,345 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:40:24,345 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:40:24,345 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:40:24,345 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:40:24,345 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:40:24,346 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:40:24,347 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:40:24,347 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:40:24,347 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:40:24,347 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:40:24,347 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:40:24,348 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:40:24,348 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:40:24,348 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:40:24,348 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:40:24,348 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:40:24,350 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:40:24,350 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:40:24,351 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:40:24,351 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:40:24,351 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:40:24,351 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:40:24,351 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:40:24,352 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:40:24,352 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:40:24,352 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:40:24,352 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:40:24,352 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:40:24,418 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:40:24,435 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:40:24,439 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:40:24,440 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:40:24,441 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:40:24,444 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label03_false-unreach-call.c [2018-11-12 16:40:24,513 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5173bf1e4/5231846d560e45e396c2e464d7423b58/FLAG2fd09e577 [2018-11-12 16:40:25,188 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:40:25,189 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label03_false-unreach-call.c [2018-11-12 16:40:25,206 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5173bf1e4/5231846d560e45e396c2e464d7423b58/FLAG2fd09e577 [2018-11-12 16:40:25,224 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5173bf1e4/5231846d560e45e396c2e464d7423b58 [2018-11-12 16:40:25,237 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:40:25,239 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:40:25,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:40:25,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:40:25,245 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:40:25,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:40:25" (1/1) ... [2018-11-12 16:40:25,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e944962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:25, skipping insertion in model container [2018-11-12 16:40:25,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:40:25" (1/1) ... [2018-11-12 16:40:25,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:40:25,363 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:40:26,297 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:40:26,302 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:40:26,557 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:40:26,587 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:40:26,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:26 WrapperNode [2018-11-12 16:40:26,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:40:26,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:40:26,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:40:26,589 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:40:26,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:26" (1/1) ... [2018-11-12 16:40:26,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:26" (1/1) ... [2018-11-12 16:40:26,788 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:40:26,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:40:26,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:40:26,789 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:40:26,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:26" (1/1) ... [2018-11-12 16:40:26,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:26" (1/1) ... [2018-11-12 16:40:26,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:26" (1/1) ... [2018-11-12 16:40:26,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:26" (1/1) ... [2018-11-12 16:40:26,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:26" (1/1) ... [2018-11-12 16:40:26,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:26" (1/1) ... [2018-11-12 16:40:26,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:26" (1/1) ... [2018-11-12 16:40:26,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:40:26,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:40:26,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:40:26,944 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:40:26,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:40:27,016 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:40:27,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:40:27,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:40:27,017 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:40:27,017 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:40:27,017 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:40:27,017 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:40:27,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:40:27,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:40:27,018 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:40:27,018 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:40:32,707 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:40:32,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:40:32 BoogieIcfgContainer [2018-11-12 16:40:32,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:40:32,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:40:32,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:40:32,713 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:40:32,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:40:25" (1/3) ... [2018-11-12 16:40:32,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a23900a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:40:32, skipping insertion in model container [2018-11-12 16:40:32,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:26" (2/3) ... [2018-11-12 16:40:32,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a23900a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:40:32, skipping insertion in model container [2018-11-12 16:40:32,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:40:32" (3/3) ... [2018-11-12 16:40:32,717 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label03_false-unreach-call.c [2018-11-12 16:40:32,727 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:40:32,736 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:40:32,755 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:40:32,795 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:40:32,796 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:40:32,796 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:40:32,796 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:40:32,796 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:40:32,796 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:40:32,796 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:40:32,797 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:40:32,828 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-12 16:40:32,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-12 16:40:32,835 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:40:32,836 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:40:32,838 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:40:32,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:40:32,844 INFO L82 PathProgramCache]: Analyzing trace with hash -2114670117, now seen corresponding path program 1 times [2018-11-12 16:40:32,846 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:40:32,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:32,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:40:32,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:32,900 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:40:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:40:33,211 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:40:33,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:40:33,243 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:40:33,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:40:33,243 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:40:33,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:40:33,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:40:33,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:40:33,264 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-12 16:40:36,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:40:36,794 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-12 16:40:36,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:40:36,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-11-12 16:40:36,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:40:36,824 INFO L225 Difference]: With dead ends: 1156 [2018-11-12 16:40:36,824 INFO L226 Difference]: Without dead ends: 744 [2018-11-12 16:40:36,835 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:40:36,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-12 16:40:36,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-12 16:40:36,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-12 16:40:36,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1343 transitions. [2018-11-12 16:40:36,939 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1343 transitions. Word has length 13 [2018-11-12 16:40:36,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:40:36,940 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1343 transitions. [2018-11-12 16:40:36,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:40:36,940 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1343 transitions. [2018-11-12 16:40:36,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-11-12 16:40:36,948 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:40:36,948 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:40:36,949 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:40:36,949 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:40:36,949 INFO L82 PathProgramCache]: Analyzing trace with hash -631689799, now seen corresponding path program 1 times [2018-11-12 16:40:36,949 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:40:36,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:36,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:40:36,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:36,951 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:40:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:40:37,364 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:40:37,441 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:40:37,441 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:40:37,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:40:37,442 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:40:37,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:40:37,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:40:37,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:40:37,445 INFO L87 Difference]: Start difference. First operand 744 states and 1343 transitions. Second operand 6 states. [2018-11-12 16:40:44,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:40:44,618 INFO L93 Difference]: Finished difference Result 2846 states and 5292 transitions. [2018-11-12 16:40:44,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:40:44,619 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2018-11-12 16:40:44,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:40:44,642 INFO L225 Difference]: With dead ends: 2846 [2018-11-12 16:40:44,642 INFO L226 Difference]: Without dead ends: 2108 [2018-11-12 16:40:44,651 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 [2018-11-12 16:40:44,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2018-11-12 16:40:44,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 2090. [2018-11-12 16:40:44,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2090 states. [2018-11-12 16:40:44,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3323 transitions. [2018-11-12 16:40:44,765 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3323 transitions. Word has length 86 [2018-11-12 16:40:44,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:40:44,766 INFO L480 AbstractCegarLoop]: Abstraction has 2090 states and 3323 transitions. [2018-11-12 16:40:44,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:40:44,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3323 transitions. [2018-11-12 16:40:44,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-11-12 16:40:44,773 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:40:44,774 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:40:44,774 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:40:44,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:40:44,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1047339596, now seen corresponding path program 1 times [2018-11-12 16:40:44,774 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:40:44,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:44,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:40:44,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:44,779 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:40:44,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:40:45,086 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:40:45,086 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:40:45,087 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:40:45,087 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:40:45,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:40:45,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:40:45,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:40:45,088 INFO L87 Difference]: Start difference. First operand 2090 states and 3323 transitions. Second operand 6 states. [2018-11-12 16:40:49,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:40:49,524 INFO L93 Difference]: Finished difference Result 5549 states and 9209 transitions. [2018-11-12 16:40:49,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:40:49,534 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2018-11-12 16:40:49,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:40:49,557 INFO L225 Difference]: With dead ends: 5549 [2018-11-12 16:40:49,557 INFO L226 Difference]: Without dead ends: 3465 [2018-11-12 16:40:49,570 INFO L604 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 [2018-11-12 16:40:49,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3465 states. [2018-11-12 16:40:49,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3465 to 3433. [2018-11-12 16:40:49,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3433 states. [2018-11-12 16:40:49,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3433 states to 3433 states and 5124 transitions. [2018-11-12 16:40:49,663 INFO L78 Accepts]: Start accepts. Automaton has 3433 states and 5124 transitions. Word has length 115 [2018-11-12 16:40:49,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:40:49,664 INFO L480 AbstractCegarLoop]: Abstraction has 3433 states and 5124 transitions. [2018-11-12 16:40:49,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:40:49,664 INFO L276 IsEmpty]: Start isEmpty. Operand 3433 states and 5124 transitions. [2018-11-12 16:40:49,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-11-12 16:40:49,668 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:40:49,668 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:40:49,668 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:40:49,669 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:40:49,669 INFO L82 PathProgramCache]: Analyzing trace with hash -306297911, now seen corresponding path program 1 times [2018-11-12 16:40:49,669 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:40:49,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:49,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:40:49,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:49,671 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:40:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:40:50,011 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:40:50,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:40:50,335 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:40:50,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:40:50,336 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:40:50,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:40:50,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:40:50,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:40:50,337 INFO L87 Difference]: Start difference. First operand 3433 states and 5124 transitions. Second operand 6 states. [2018-11-12 16:40:54,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:40:54,495 INFO L93 Difference]: Finished difference Result 8911 states and 13439 transitions. [2018-11-12 16:40:54,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:40:54,496 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-11-12 16:40:54,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:40:54,521 INFO L225 Difference]: With dead ends: 8911 [2018-11-12 16:40:54,521 INFO L226 Difference]: Without dead ends: 5484 [2018-11-12 16:40:54,538 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:40:54,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5484 states. [2018-11-12 16:40:54,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5484 to 5455. [2018-11-12 16:40:54,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5455 states. [2018-11-12 16:40:54,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5455 states to 5455 states and 7720 transitions. [2018-11-12 16:40:54,676 INFO L78 Accepts]: Start accepts. Automaton has 5455 states and 7720 transitions. Word has length 158 [2018-11-12 16:40:54,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:40:54,676 INFO L480 AbstractCegarLoop]: Abstraction has 5455 states and 7720 transitions. [2018-11-12 16:40:54,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:40:54,677 INFO L276 IsEmpty]: Start isEmpty. Operand 5455 states and 7720 transitions. [2018-11-12 16:40:54,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-11-12 16:40:54,687 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:40:54,687 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:40:54,688 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:40:54,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:40:54,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1241846344, now seen corresponding path program 1 times [2018-11-12 16:40:54,688 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:40:54,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:54,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:40:54,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:54,690 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:40:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:40:54,994 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:40:55,186 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 12 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 16:40:55,187 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:40:55,187 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:40:55,188 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 229 with the following transitions: [2018-11-12 16:40:55,190 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [183], [185], [188], [196], [204], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [972], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:40:55,241 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:40:55,241 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:40:56,220 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:40:56,224 INFO L272 AbstractInterpreter]: Visited 150 different actions 150 times. Never merged. Never widened. Performed 2688 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2688 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 16:40:56,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:40:56,262 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:40:57,124 INFO L227 lantSequenceWeakener]: Weakened 206 states. On average, predicates are now at 77.28% of their original sizes. [2018-11-12 16:40:57,125 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:40:59,009 INFO L415 sIntCurrentIteration]: We unified 227 AI predicates to 227 [2018-11-12 16:40:59,009 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:40:59,010 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:40:59,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2018-11-12 16:40:59,010 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:40:59,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 16:40:59,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 16:40:59,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:40:59,012 INFO L87 Difference]: Start difference. First operand 5455 states and 7720 transitions. Second operand 11 states. [2018-11-12 16:41:04,835 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:41:35,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:41:35,262 INFO L93 Difference]: Finished difference Result 11247 states and 15958 transitions. [2018-11-12 16:41:35,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-12 16:41:35,262 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 228 [2018-11-12 16:41:35,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:41:35,286 INFO L225 Difference]: With dead ends: 11247 [2018-11-12 16:41:35,286 INFO L226 Difference]: Without dead ends: 5798 [2018-11-12 16:41:35,302 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 232 GetRequests, 182 SyntacticMatches, 36 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-11-12 16:41:35,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5798 states. [2018-11-12 16:41:35,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5798 to 5793. [2018-11-12 16:41:35,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5793 states. [2018-11-12 16:41:35,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5793 states to 5793 states and 8066 transitions. [2018-11-12 16:41:35,458 INFO L78 Accepts]: Start accepts. Automaton has 5793 states and 8066 transitions. Word has length 228 [2018-11-12 16:41:35,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:41:35,458 INFO L480 AbstractCegarLoop]: Abstraction has 5793 states and 8066 transitions. [2018-11-12 16:41:35,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 16:41:35,458 INFO L276 IsEmpty]: Start isEmpty. Operand 5793 states and 8066 transitions. [2018-11-12 16:41:35,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-11-12 16:41:35,463 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:41:35,464 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:41:35,464 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:41:35,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:41:35,465 INFO L82 PathProgramCache]: Analyzing trace with hash -524091392, now seen corresponding path program 1 times [2018-11-12 16:41:35,465 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:41:35,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:35,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:41:35,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:35,469 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:41:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:41:35,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-12 16:41:35,833 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:41:35,833 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:41:35,833 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 254 with the following transitions: [2018-11-12 16:41:35,834 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [183], [185], [188], [196], [204], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:41:35,852 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:41:35,856 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:41:36,847 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:41:36,848 INFO L272 AbstractInterpreter]: Visited 247 different actions 490 times. Merged at 5 different actions 7 times. Never widened. Performed 8651 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8651 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:41:36,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:41:36,887 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:41:38,237 INFO L227 lantSequenceWeakener]: Weakened 23 states. On average, predicates are now at 77.95% of their original sizes. [2018-11-12 16:41:38,237 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:41:42,126 INFO L415 sIntCurrentIteration]: We unified 252 AI predicates to 252 [2018-11-12 16:41:42,126 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:41:42,127 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:41:42,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [4] total 19 [2018-11-12 16:41:42,127 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:41:42,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 16:41:42,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 16:41:42,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-11-12 16:41:42,129 INFO L87 Difference]: Start difference. First operand 5793 states and 8066 transitions. Second operand 17 states. [2018-11-12 16:41:46,557 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:42:16,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:42:16,704 INFO L93 Difference]: Finished difference Result 11882 states and 16797 transitions. [2018-11-12 16:42:16,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-12 16:42:16,705 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 253 [2018-11-12 16:42:16,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:42:16,742 INFO L225 Difference]: With dead ends: 11882 [2018-11-12 16:42:16,742 INFO L226 Difference]: Without dead ends: 6433 [2018-11-12 16:42:16,761 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 266 GetRequests, 196 SyntacticMatches, 41 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=178, Invalid=752, Unknown=0, NotChecked=0, Total=930 [2018-11-12 16:42:16,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6433 states. [2018-11-12 16:42:17,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6433 to 6428. [2018-11-12 16:42:17,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6428 states. [2018-11-12 16:42:17,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6428 states to 6428 states and 8734 transitions. [2018-11-12 16:42:17,562 INFO L78 Accepts]: Start accepts. Automaton has 6428 states and 8734 transitions. Word has length 253 [2018-11-12 16:42:17,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:42:17,563 INFO L480 AbstractCegarLoop]: Abstraction has 6428 states and 8734 transitions. [2018-11-12 16:42:17,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 16:42:17,563 INFO L276 IsEmpty]: Start isEmpty. Operand 6428 states and 8734 transitions. [2018-11-12 16:42:17,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-11-12 16:42:17,572 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:42:17,572 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:42:17,572 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:42:17,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:42:17,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1209965915, now seen corresponding path program 1 times [2018-11-12 16:42:17,573 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:42:17,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:42:17,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:42:17,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:42:17,574 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:42:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:42:17,957 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 91 proven. 69 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-11-12 16:42:17,958 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:42:17,958 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:42:17,958 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 321 with the following transitions: [2018-11-12 16:42:17,960 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [183], [185], [188], [196], [204], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [972], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:42:17,964 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:42:17,964 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:42:18,029 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:42:18,389 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:42:18,389 INFO L272 AbstractInterpreter]: Visited 154 different actions 453 times. Merged at 5 different actions 13 times. Never widened. Performed 6486 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6486 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:42:18,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:42:18,397 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:42:18,944 INFO L227 lantSequenceWeakener]: Weakened 100 states. On average, predicates are now at 77.43% of their original sizes. [2018-11-12 16:42:18,945 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:42:19,469 INFO L415 sIntCurrentIteration]: We unified 319 AI predicates to 319 [2018-11-12 16:42:19,470 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:42:19,470 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:42:19,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [5] total 26 [2018-11-12 16:42:19,470 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:42:19,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-12 16:42:19,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-12 16:42:19,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2018-11-12 16:42:19,472 INFO L87 Difference]: Start difference. First operand 6428 states and 8734 transitions. Second operand 23 states. [2018-11-12 16:43:11,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:43:11,909 INFO L93 Difference]: Finished difference Result 13937 states and 19594 transitions. [2018-11-12 16:43:11,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-12 16:43:11,910 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 320 [2018-11-12 16:43:11,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:43:11,935 INFO L225 Difference]: With dead ends: 13937 [2018-11-12 16:43:11,935 INFO L226 Difference]: Without dead ends: 8488 [2018-11-12 16:43:11,954 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 339 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=325, Invalid=1481, Unknown=0, NotChecked=0, Total=1806 [2018-11-12 16:43:11,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8488 states. [2018-11-12 16:43:12,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8488 to 8020. [2018-11-12 16:43:12,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8020 states. [2018-11-12 16:43:12,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8020 states to 8020 states and 10407 transitions. [2018-11-12 16:43:12,110 INFO L78 Accepts]: Start accepts. Automaton has 8020 states and 10407 transitions. Word has length 320 [2018-11-12 16:43:12,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:43:12,111 INFO L480 AbstractCegarLoop]: Abstraction has 8020 states and 10407 transitions. [2018-11-12 16:43:12,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-12 16:43:12,111 INFO L276 IsEmpty]: Start isEmpty. Operand 8020 states and 10407 transitions. [2018-11-12 16:43:12,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-11-12 16:43:12,120 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:43:12,120 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:43:12,121 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:43:12,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:43:12,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1456333379, now seen corresponding path program 1 times [2018-11-12 16:43:12,121 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:43:12,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:43:12,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:43:12,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:43:12,122 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:43:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:43:12,646 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-12 16:43:12,998 WARN L179 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-12 16:43:13,459 WARN L179 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-12 16:43:14,584 WARN L179 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2018-11-12 16:43:15,837 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:43:15,837 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:43:15,837 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:43:15,838 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 346 with the following transitions: [2018-11-12 16:43:15,838 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [183], [185], [188], [196], [204], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:43:15,842 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:43:15,843 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:43:15,947 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:43:16,955 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:43:16,955 INFO L272 AbstractInterpreter]: Visited 249 different actions 984 times. Merged at 7 different actions 24 times. Never widened. Performed 15571 root evaluator evaluations with a maximum evaluation depth of 6. Performed 15571 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 5 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 16:43:16,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:43:16,966 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:43:16,966 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:43:16,966 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:43:16,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:43:16,977 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:43:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:43:17,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:43:17,528 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:43:17,529 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:43:18,025 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:43:18,058 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:43:18,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2018-11-12 16:43:18,059 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:43:18,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 16:43:18,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 16:43:18,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2018-11-12 16:43:18,061 INFO L87 Difference]: Start difference. First operand 8020 states and 10407 transitions. Second operand 16 states. [2018-11-12 16:43:34,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:43:34,149 INFO L93 Difference]: Finished difference Result 18293 states and 25971 transitions. [2018-11-12 16:43:34,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-11-12 16:43:34,150 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 345 [2018-11-12 16:43:34,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:43:34,178 INFO L225 Difference]: With dead ends: 18293 [2018-11-12 16:43:34,178 INFO L226 Difference]: Without dead ends: 8713 [2018-11-12 16:43:34,222 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 722 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1427 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=994, Invalid=3698, Unknown=0, NotChecked=0, Total=4692 [2018-11-12 16:43:34,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8713 states. [2018-11-12 16:43:34,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8713 to 8476. [2018-11-12 16:43:34,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8476 states. [2018-11-12 16:43:34,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8476 states to 8476 states and 9858 transitions. [2018-11-12 16:43:34,407 INFO L78 Accepts]: Start accepts. Automaton has 8476 states and 9858 transitions. Word has length 345 [2018-11-12 16:43:34,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:43:34,408 INFO L480 AbstractCegarLoop]: Abstraction has 8476 states and 9858 transitions. [2018-11-12 16:43:34,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 16:43:34,408 INFO L276 IsEmpty]: Start isEmpty. Operand 8476 states and 9858 transitions. [2018-11-12 16:43:34,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2018-11-12 16:43:34,419 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:43:34,420 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:43:34,420 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:43:34,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:43:34,421 INFO L82 PathProgramCache]: Analyzing trace with hash -971359389, now seen corresponding path program 1 times [2018-11-12 16:43:34,421 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:43:34,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:43:34,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:43:34,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:43:34,423 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:43:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:43:34,839 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:43:35,357 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 207 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-12 16:43:35,357 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:43:35,358 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:43:35,358 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 477 with the following transitions: [2018-11-12 16:43:35,358 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [183], [185], [188], [196], [204], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [972], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:43:35,365 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:43:35,365 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:43:37,969 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:43:37,969 INFO L272 AbstractInterpreter]: Visited 257 different actions 2767 times. Merged at 5 different actions 50 times. Widened at 1 different actions 6 times. Performed 48842 root evaluator evaluations with a maximum evaluation depth of 6. Performed 48842 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:43:38,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:43:38,240 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:43:38,855 INFO L227 lantSequenceWeakener]: Weakened 213 states. On average, predicates are now at 77.38% of their original sizes. [2018-11-12 16:43:38,855 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:43:39,377 INFO L415 sIntCurrentIteration]: We unified 475 AI predicates to 475 [2018-11-12 16:43:39,377 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:43:39,377 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:43:39,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [5] total 27 [2018-11-12 16:43:39,378 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:43:39,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-12 16:43:39,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-12 16:43:39,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2018-11-12 16:43:39,381 INFO L87 Difference]: Start difference. First operand 8476 states and 9858 transitions. Second operand 24 states. [2018-11-12 16:43:48,755 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:43:55,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:43:55,695 INFO L93 Difference]: Finished difference Result 16956 states and 19870 transitions. [2018-11-12 16:43:55,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-11-12 16:43:55,695 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 476 [2018-11-12 16:43:55,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:43:55,727 INFO L225 Difference]: With dead ends: 16956 [2018-11-12 16:43:55,727 INFO L226 Difference]: Without dead ends: 9459 [2018-11-12 16:43:55,742 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 493 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=344, Invalid=1378, Unknown=0, NotChecked=0, Total=1722 [2018-11-12 16:43:55,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9459 states. [2018-11-12 16:43:55,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9459 to 9449. [2018-11-12 16:43:55,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9449 states. [2018-11-12 16:43:55,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9449 states to 9449 states and 10862 transitions. [2018-11-12 16:43:55,911 INFO L78 Accepts]: Start accepts. Automaton has 9449 states and 10862 transitions. Word has length 476 [2018-11-12 16:43:55,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:43:55,912 INFO L480 AbstractCegarLoop]: Abstraction has 9449 states and 10862 transitions. [2018-11-12 16:43:55,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-12 16:43:55,912 INFO L276 IsEmpty]: Start isEmpty. Operand 9449 states and 10862 transitions. [2018-11-12 16:43:55,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2018-11-12 16:43:55,929 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:43:55,930 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:43:55,930 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:43:55,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:43:55,930 INFO L82 PathProgramCache]: Analyzing trace with hash 708778199, now seen corresponding path program 1 times [2018-11-12 16:43:55,930 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:43:55,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:43:55,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:43:55,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:43:55,932 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:43:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:43:56,413 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:43:57,010 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 36 proven. 305 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-11-12 16:43:57,011 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:43:57,011 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:43:57,011 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 578 with the following transitions: [2018-11-12 16:43:57,012 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [183], [185], [188], [196], [204], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [796], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [972], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:43:57,021 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:43:57,021 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:43:57,152 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-12 16:43:58,239 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-12 16:43:58,241 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-12 16:43:58,241 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 16:43:58,241 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:43:58,241 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:43:58,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:43:58,260 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:43:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:43:58,431 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:43:58,477 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-12 16:43:58,678 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:43:58,678 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:43:58,684 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:43:58,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:43:58 BoogieIcfgContainer [2018-11-12 16:43:58,685 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:43:58,686 INFO L168 Benchmark]: Toolchain (without parser) took 213448.11 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-12 16:43:58,687 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:43:58,687 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1348.14 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-12 16:43:58,690 INFO L168 Benchmark]: Boogie Procedure Inliner took 199.47 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -872.4 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-11-12 16:43:58,691 INFO L168 Benchmark]: Boogie Preprocessor took 155.29 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:43:58,692 INFO L168 Benchmark]: RCFGBuilder took 5765.08 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 265.6 MB). Peak memory consumption was 265.6 MB. Max. memory is 7.1 GB. [2018-11-12 16:43:58,692 INFO L168 Benchmark]: TraceAbstraction took 205974.74 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 2.0 GB in the beginning and 3.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-12 16:43:58,700 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 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 1348.14 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 199.47 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -872.4 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 155.29 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 5765.08 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 265.6 MB). Peak memory consumption was 265.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205974.74 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 2.0 GB in the beginning and 3.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 25]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 25). Cancelled while BasicCegarLoop was analyzing trace of length 578 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 5 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 205.8s OverallTime, 10 OverallIterations, 5 TraceHistogramMax, 175.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2035 SDtfs, 24741 SDslu, 2250 SDs, 0 SdLazy, 36298 SolverSat, 8135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 76.4s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 2154 GetRequests, 1859 SyntacticMatches, 82 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2680 ImplicationChecksByTransitivity, 14.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9449occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.8s AbstIntTime, 6 AbstIntIterations, 4 AbstIntStrong, 0.9976168076376419 AbsIntWeakeningRatio, 0.08641005498821681 AbsIntAvgWeakeningVarsNumRemoved, 9.996857816182247 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 804 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 2339 NumberOfCodeBlocks, 2339 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 2673 ConstructedInterpolants, 0 QuantifiedInterpolants, 4437705 SizeOfPredicates, 1 NumberOfNonLiveVariables, 528 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 622/971 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown