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/Problem15_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:17:18,570 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:17:18,575 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:17:18,593 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:17:18,594 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:17:18,595 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:17:18,596 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:17:18,598 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:17:18,600 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:17:18,601 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:17:18,602 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:17:18,602 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:17:18,603 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:17:18,604 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:17:18,605 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:17:18,606 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:17:18,607 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:17:18,610 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:17:18,617 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:17:18,623 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:17:18,624 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:17:18,626 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:17:18,631 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:17:18,631 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:17:18,631 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:17:18,632 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:17:18,635 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:17:18,636 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:17:18,637 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:17:18,640 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:17:18,640 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:17:18,641 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:17:18,641 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:17:18,641 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:17:18,642 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:17:18,644 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:17:18,645 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 19:17:18,670 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:17:18,670 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:17:18,671 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:17:18,671 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:17:18,672 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:17:18,672 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:17:18,672 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:17:18,672 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:17:18,672 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:17:18,673 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:17:18,673 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:17:18,673 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:17:18,673 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:17:18,677 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:17:18,677 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:17:18,677 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:17:18,678 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:17:18,678 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:17:18,678 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:17:18,678 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:17:18,678 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:17:18,680 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:17:18,681 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:17:18,681 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:17:18,681 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:17:18,681 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:17:18,681 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:17:18,682 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:17:18,682 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:17:18,682 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:17:18,682 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:17:18,682 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:17:18,683 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:17:18,683 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:17:18,683 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:17:18,749 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:17:18,764 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:17:18,768 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:17:18,770 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:17:18,770 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:17:18,771 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label57_true-unreach-call.c [2018-11-12 19:17:18,841 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d00b90631/128cf4ca423241d6b5a98baa3e8e277d/FLAG9c561629a [2018-11-12 19:17:19,556 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:17:19,557 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label57_true-unreach-call.c [2018-11-12 19:17:19,583 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d00b90631/128cf4ca423241d6b5a98baa3e8e277d/FLAG9c561629a [2018-11-12 19:17:19,602 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d00b90631/128cf4ca423241d6b5a98baa3e8e277d [2018-11-12 19:17:19,615 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:17:19,616 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:17:19,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:17:19,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:17:19,622 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:17:19,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:17:19" (1/1) ... [2018-11-12 19:17:19,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43b57dbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:17:19, skipping insertion in model container [2018-11-12 19:17:19,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:17:19" (1/1) ... [2018-11-12 19:17:19,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:17:19,747 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:17:20,690 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:17:20,695 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:17:20,997 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:17:21,022 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:17:21,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:17:21 WrapperNode [2018-11-12 19:17:21,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:17:21,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:17:21,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:17:21,024 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:17:21,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:17:21" (1/1) ... [2018-11-12 19:17:21,247 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:17:21" (1/1) ... [2018-11-12 19:17:21,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:17:21,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:17:21,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:17:21,259 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:17:21,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:17:21" (1/1) ... [2018-11-12 19:17:21,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:17:21" (1/1) ... [2018-11-12 19:17:21,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:17:21" (1/1) ... [2018-11-12 19:17:21,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:17:21" (1/1) ... [2018-11-12 19:17:21,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:17:21" (1/1) ... [2018-11-12 19:17:21,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:17:21" (1/1) ... [2018-11-12 19:17:21,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:17:21" (1/1) ... [2018-11-12 19:17:21,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:17:21,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:17:21,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:17:21,414 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:17:21,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:17:21" (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 19:17:21,488 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:17:21,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:17:21,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:17:21,488 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:17:21,488 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:17:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:17:21,489 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:17:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:17:21,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:17:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:17:21,490 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:17:26,913 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:17:26,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:17:26 BoogieIcfgContainer [2018-11-12 19:17:26,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:17:26,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:17:26,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:17:26,919 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:17:26,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:17:19" (1/3) ... [2018-11-12 19:17:26,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de50b41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:17:26, skipping insertion in model container [2018-11-12 19:17:26,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:17:21" (2/3) ... [2018-11-12 19:17:26,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de50b41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:17:26, skipping insertion in model container [2018-11-12 19:17:26,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:17:26" (3/3) ... [2018-11-12 19:17:26,923 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label57_true-unreach-call.c [2018-11-12 19:17:26,933 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:17:26,942 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:17:26,958 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:17:27,011 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:17:27,011 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:17:27,012 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:17:27,012 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:17:27,012 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:17:27,012 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:17:27,012 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:17:27,012 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:17:27,053 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-12 19:17:27,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-12 19:17:27,062 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:17:27,063 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:17:27,065 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:17:27,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:17:27,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1926433044, now seen corresponding path program 1 times [2018-11-12 19:17:27,074 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:17:27,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:17:27,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:17:27,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:17:27,125 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:17:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:17:27,567 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 19:17:27,569 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:17:27,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:17:27,570 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:17:27,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:17:27,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:17:27,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:17:27,595 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-12 19:17:36,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:17:36,147 INFO L93 Difference]: Finished difference Result 1550 states and 2835 transitions. [2018-11-12 19:17:36,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:17:36,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2018-11-12 19:17:36,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:17:36,194 INFO L225 Difference]: With dead ends: 1550 [2018-11-12 19:17:36,195 INFO L226 Difference]: Without dead ends: 1106 [2018-11-12 19:17:36,211 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:17:36,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2018-11-12 19:17:36,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 762. [2018-11-12 19:17:36,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2018-11-12 19:17:36,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1263 transitions. [2018-11-12 19:17:36,341 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1263 transitions. Word has length 48 [2018-11-12 19:17:36,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:17:36,341 INFO L480 AbstractCegarLoop]: Abstraction has 762 states and 1263 transitions. [2018-11-12 19:17:36,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:17:36,343 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1263 transitions. [2018-11-12 19:17:36,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-11-12 19:17:36,353 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:17:36,356 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:17:36,356 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:17:36,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:17:36,357 INFO L82 PathProgramCache]: Analyzing trace with hash -45753950, now seen corresponding path program 1 times [2018-11-12 19:17:36,357 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:17:36,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:17:36,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:17:36,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:17:36,360 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:17:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:17:36,626 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:17:36,627 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:17:36,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 19:17:36,627 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:17:36,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 19:17:36,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 19:17:36,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 19:17:36,630 INFO L87 Difference]: Start difference. First operand 762 states and 1263 transitions. Second operand 5 states. [2018-11-12 19:17:41,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:17:41,937 INFO L93 Difference]: Finished difference Result 2248 states and 3762 transitions. [2018-11-12 19:17:41,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 19:17:41,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2018-11-12 19:17:41,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:17:41,951 INFO L225 Difference]: With dead ends: 2248 [2018-11-12 19:17:41,951 INFO L226 Difference]: Without dead ends: 1492 [2018-11-12 19:17:41,956 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:17:41,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2018-11-12 19:17:42,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1457. [2018-11-12 19:17:42,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2018-11-12 19:17:42,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2152 transitions. [2018-11-12 19:17:42,044 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2152 transitions. Word has length 121 [2018-11-12 19:17:42,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:17:42,045 INFO L480 AbstractCegarLoop]: Abstraction has 1457 states and 2152 transitions. [2018-11-12 19:17:42,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 19:17:42,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2152 transitions. [2018-11-12 19:17:42,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-11-12 19:17:42,052 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:17:42,052 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:17:42,052 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:17:42,060 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:17:42,060 INFO L82 PathProgramCache]: Analyzing trace with hash 935470738, now seen corresponding path program 1 times [2018-11-12 19:17:42,060 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:17:42,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:17:42,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:17:42,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:17:42,062 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:17:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:17:42,265 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:17:42,265 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:17:42,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:17:42,265 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:17:42,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:17:42,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:17:42,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:17:42,267 INFO L87 Difference]: Start difference. First operand 1457 states and 2152 transitions. Second operand 4 states. [2018-11-12 19:17:46,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:17:46,701 INFO L93 Difference]: Finished difference Result 5393 states and 8280 transitions. [2018-11-12 19:17:46,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:17:46,701 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2018-11-12 19:17:46,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:17:46,728 INFO L225 Difference]: With dead ends: 5393 [2018-11-12 19:17:46,729 INFO L226 Difference]: Without dead ends: 3942 [2018-11-12 19:17:46,743 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:17:46,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3942 states. [2018-11-12 19:17:46,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3942 to 3942. [2018-11-12 19:17:46,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3942 states. [2018-11-12 19:17:46,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 5428 transitions. [2018-11-12 19:17:46,871 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 5428 transitions. Word has length 129 [2018-11-12 19:17:46,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:17:46,872 INFO L480 AbstractCegarLoop]: Abstraction has 3942 states and 5428 transitions. [2018-11-12 19:17:46,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:17:46,873 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 5428 transitions. [2018-11-12 19:17:46,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-11-12 19:17:46,880 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:17:46,881 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:17:46,881 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:17:46,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:17:46,882 INFO L82 PathProgramCache]: Analyzing trace with hash 107667736, now seen corresponding path program 1 times [2018-11-12 19:17:46,883 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:17:46,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:17:46,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:17:46,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:17:46,884 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:17:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:17:47,182 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:17:47,349 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 82 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:17:47,349 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:17:47,349 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:17:47,350 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 216 with the following transitions: [2018-11-12 19:17:47,352 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [633], [638], [640], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:17:47,399 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:17:47,399 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:17:47,839 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:17:47,841 INFO L272 AbstractInterpreter]: Visited 90 different actions 90 times. Never merged. Never widened. Performed 807 root evaluator evaluations with a maximum evaluation depth of 4. Performed 807 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 19:17:47,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:17:47,884 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:17:48,456 INFO L227 lantSequenceWeakener]: Weakened 204 states. On average, predicates are now at 77.93% of their original sizes. [2018-11-12 19:17:48,456 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:17:48,556 INFO L415 sIntCurrentIteration]: We unified 214 AI predicates to 214 [2018-11-12 19:17:48,557 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:17:48,558 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:17:48,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-12 19:17:48,558 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:17:48,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 19:17:48,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 19:17:48,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 19:17:48,560 INFO L87 Difference]: Start difference. First operand 3942 states and 5428 transitions. Second operand 7 states. [2018-11-12 19:17:51,899 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:18:21,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:18:21,273 INFO L93 Difference]: Finished difference Result 8188 states and 11232 transitions. [2018-11-12 19:18:21,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:18:21,273 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2018-11-12 19:18:21,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:18:21,294 INFO L225 Difference]: With dead ends: 8188 [2018-11-12 19:18:21,294 INFO L226 Difference]: Without dead ends: 4252 [2018-11-12 19:18:21,312 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 215 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:18:21,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4252 states. [2018-11-12 19:18:21,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4252 to 4250. [2018-11-12 19:18:21,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4250 states. [2018-11-12 19:18:21,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4250 states to 4250 states and 5744 transitions. [2018-11-12 19:18:21,426 INFO L78 Accepts]: Start accepts. Automaton has 4250 states and 5744 transitions. Word has length 215 [2018-11-12 19:18:21,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:18:21,427 INFO L480 AbstractCegarLoop]: Abstraction has 4250 states and 5744 transitions. [2018-11-12 19:18:21,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 19:18:21,427 INFO L276 IsEmpty]: Start isEmpty. Operand 4250 states and 5744 transitions. [2018-11-12 19:18:21,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-11-12 19:18:21,437 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:18:21,437 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 19:18:21,438 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:18:21,438 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:18:21,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1560998385, now seen corresponding path program 1 times [2018-11-12 19:18:21,438 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:18:21,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:18:21,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:18:21,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:18:21,440 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:18:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:18:21,778 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:18:22,284 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 129 proven. 221 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-12 19:18:22,285 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:18:22,285 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:18:22,285 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 312 with the following transitions: [2018-11-12 19:18:22,286 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:18:22,291 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:18:22,292 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:18:22,428 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:18:23,633 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:18:23,634 INFO L272 AbstractInterpreter]: Visited 105 different actions 699 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Performed 12104 root evaluator evaluations with a maximum evaluation depth of 6. Performed 12104 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 19:18:23,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:18:23,675 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:18:24,722 INFO L227 lantSequenceWeakener]: Weakened 57 states. On average, predicates are now at 77.75% of their original sizes. [2018-11-12 19:18:24,722 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:18:30,357 INFO L415 sIntCurrentIteration]: We unified 310 AI predicates to 310 [2018-11-12 19:18:30,358 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:18:30,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:18:30,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-11-12 19:18:30,358 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:18:30,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-12 19:18:30,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-12 19:18:30,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-11-12 19:18:30,360 INFO L87 Difference]: Start difference. First operand 4250 states and 5744 transitions. Second operand 15 states. [2018-11-12 19:19:02,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:19:02,415 INFO L93 Difference]: Finished difference Result 9654 states and 12910 transitions. [2018-11-12 19:19:02,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-12 19:19:02,416 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 311 [2018-11-12 19:19:02,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:19:02,446 INFO L225 Difference]: With dead ends: 9654 [2018-11-12 19:19:02,446 INFO L226 Difference]: Without dead ends: 5718 [2018-11-12 19:19:02,470 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 317 GetRequests, 189 SyntacticMatches, 108 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 918 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2018-11-12 19:19:02,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5718 states. [2018-11-12 19:19:02,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5718 to 5434. [2018-11-12 19:19:02,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5434 states. [2018-11-12 19:19:02,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5434 states to 5434 states and 6980 transitions. [2018-11-12 19:19:02,595 INFO L78 Accepts]: Start accepts. Automaton has 5434 states and 6980 transitions. Word has length 311 [2018-11-12 19:19:02,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:19:02,596 INFO L480 AbstractCegarLoop]: Abstraction has 5434 states and 6980 transitions. [2018-11-12 19:19:02,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-12 19:19:02,596 INFO L276 IsEmpty]: Start isEmpty. Operand 5434 states and 6980 transitions. [2018-11-12 19:19:02,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-11-12 19:19:02,609 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:19:02,609 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:19:02,609 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:19:02,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:19:02,610 INFO L82 PathProgramCache]: Analyzing trace with hash -421238958, now seen corresponding path program 1 times [2018-11-12 19:19:02,610 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:19:02,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:19:02,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:19:02,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:19:02,611 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:19:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:19:03,683 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 129 proven. 221 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-12 19:19:03,683 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:19:03,683 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:19:03,684 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 397 with the following transitions: [2018-11-12 19:19:03,684 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1115], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:19:03,690 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:19:03,690 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:19:03,804 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:19:04,399 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:19:04,399 INFO L272 AbstractInterpreter]: Visited 190 different actions 557 times. Merged at 5 different actions 9 times. Never widened. Performed 11032 root evaluator evaluations with a maximum evaluation depth of 6. Performed 11032 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 19:19:04,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:19:04,435 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:19:05,198 INFO L227 lantSequenceWeakener]: Weakened 75 states. On average, predicates are now at 77.64% of their original sizes. [2018-11-12 19:19:05,199 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:19:05,797 INFO L415 sIntCurrentIteration]: We unified 395 AI predicates to 395 [2018-11-12 19:19:05,798 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:19:05,798 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:19:05,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-11-12 19:19:05,798 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:19:05,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-12 19:19:05,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-12 19:19:05,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2018-11-12 19:19:05,801 INFO L87 Difference]: Start difference. First operand 5434 states and 6980 transitions. Second operand 20 states. [2018-11-12 19:20:05,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:20:05,788 INFO L93 Difference]: Finished difference Result 11086 states and 14488 transitions. [2018-11-12 19:20:05,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-12 19:20:05,788 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 396 [2018-11-12 19:20:05,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:20:05,815 INFO L225 Difference]: With dead ends: 11086 [2018-11-12 19:20:05,816 INFO L226 Difference]: Without dead ends: 7150 [2018-11-12 19:20:05,831 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 411 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=248, Invalid=1012, Unknown=0, NotChecked=0, Total=1260 [2018-11-12 19:20:05,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7150 states. [2018-11-12 19:20:05,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7150 to 6344. [2018-11-12 19:20:05,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6344 states. [2018-11-12 19:20:05,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6344 states to 6344 states and 7929 transitions. [2018-11-12 19:20:05,980 INFO L78 Accepts]: Start accepts. Automaton has 6344 states and 7929 transitions. Word has length 396 [2018-11-12 19:20:05,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:20:05,981 INFO L480 AbstractCegarLoop]: Abstraction has 6344 states and 7929 transitions. [2018-11-12 19:20:05,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-12 19:20:05,981 INFO L276 IsEmpty]: Start isEmpty. Operand 6344 states and 7929 transitions. [2018-11-12 19:20:05,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2018-11-12 19:20:05,999 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:20:06,000 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:20:06,000 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:20:06,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:20:06,001 INFO L82 PathProgramCache]: Analyzing trace with hash -44856356, now seen corresponding path program 1 times [2018-11-12 19:20:06,001 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:20:06,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:20:06,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:20:06,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:20:06,004 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:20:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:20:06,541 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 129 proven. 221 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-12 19:20:06,542 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:20:06,542 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:20:06,542 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 454 with the following transitions: [2018-11-12 19:20:06,543 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1378], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:20:06,550 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:20:06,550 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:20:06,674 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:20:07,735 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:20:07,735 INFO L272 AbstractInterpreter]: Visited 247 different actions 728 times. Merged at 5 different actions 9 times. Never widened. Performed 13045 root evaluator evaluations with a maximum evaluation depth of 6. Performed 13045 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 19:20:07,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:20:07,739 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:20:08,258 INFO L227 lantSequenceWeakener]: Weakened 77 states. On average, predicates are now at 77.63% of their original sizes. [2018-11-12 19:20:08,258 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:20:10,574 INFO L415 sIntCurrentIteration]: We unified 452 AI predicates to 452 [2018-11-12 19:20:10,575 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:20:10,575 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:20:10,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-11-12 19:20:10,575 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:20:10,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-12 19:20:10,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-12 19:20:10,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-11-12 19:20:10,578 INFO L87 Difference]: Start difference. First operand 6344 states and 7929 transitions. Second operand 15 states. [2018-11-12 19:20:47,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:20:47,553 INFO L93 Difference]: Finished difference Result 11457 states and 14792 transitions. [2018-11-12 19:20:47,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-12 19:20:47,554 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 453 [2018-11-12 19:20:47,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:20:47,579 INFO L225 Difference]: With dead ends: 11457 [2018-11-12 19:20:47,580 INFO L226 Difference]: Without dead ends: 7521 [2018-11-12 19:20:47,595 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 460 GetRequests, 351 SyntacticMatches, 88 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2018-11-12 19:20:47,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7521 states. [2018-11-12 19:20:47,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7521 to 7189. [2018-11-12 19:20:47,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7189 states. [2018-11-12 19:20:47,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7189 states to 7189 states and 8812 transitions. [2018-11-12 19:20:47,743 INFO L78 Accepts]: Start accepts. Automaton has 7189 states and 8812 transitions. Word has length 453 [2018-11-12 19:20:47,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:20:47,744 INFO L480 AbstractCegarLoop]: Abstraction has 7189 states and 8812 transitions. [2018-11-12 19:20:47,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-12 19:20:47,744 INFO L276 IsEmpty]: Start isEmpty. Operand 7189 states and 8812 transitions. [2018-11-12 19:20:47,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-11-12 19:20:47,763 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:20:47,763 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:20:47,764 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:20:47,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:20:47,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1788435813, now seen corresponding path program 1 times [2018-11-12 19:20:47,764 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:20:47,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:20:47,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:20:47,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:20:47,765 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:20:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:20:48,170 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:20:48,351 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 129 proven. 221 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-12 19:20:48,351 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:20:48,351 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:20:48,351 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 455 with the following transitions: [2018-11-12 19:20:48,352 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1382], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:20:48,357 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:20:48,357 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:20:48,541 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:20:50,423 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:20:50,424 INFO L272 AbstractInterpreter]: Visited 248 different actions 1700 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Performed 29619 root evaluator evaluations with a maximum evaluation depth of 6. Performed 29619 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 19:20:50,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:20:50,431 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:20:51,062 INFO L227 lantSequenceWeakener]: Weakened 77 states. On average, predicates are now at 77.63% of their original sizes. [2018-11-12 19:20:51,062 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:20:53,057 INFO L415 sIntCurrentIteration]: We unified 453 AI predicates to 453 [2018-11-12 19:20:53,057 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:20:53,058 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:20:53,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-11-12 19:20:53,058 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:20:53,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-12 19:20:53,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-12 19:20:53,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-11-12 19:20:53,060 INFO L87 Difference]: Start difference. First operand 7189 states and 8812 transitions. Second operand 15 states. Received shutdown request... [2018-11-12 19:20:58,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-12 19:20:58,522 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:20:58,528 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:20:58,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:20:58 BoogieIcfgContainer [2018-11-12 19:20:58,529 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:20:58,529 INFO L168 Benchmark]: Toolchain (without parser) took 218914.06 ms. Allocated memory was 1.5 GB in the beginning and 5.0 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 4.7 GB in the end (delta: -3.3 GB). Peak memory consumption was 185.1 MB. Max. memory is 7.1 GB. [2018-11-12 19:20:58,531 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:20:58,531 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1405.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-11-12 19:20:58,532 INFO L168 Benchmark]: Boogie Procedure Inliner took 235.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 766.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -912.4 MB). Peak memory consumption was 31.5 MB. Max. memory is 7.1 GB. [2018-11-12 19:20:58,533 INFO L168 Benchmark]: Boogie Preprocessor took 154.64 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-11-12 19:20:58,533 INFO L168 Benchmark]: RCFGBuilder took 5500.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 281.3 MB). Peak memory consumption was 281.3 MB. Max. memory is 7.1 GB. [2018-11-12 19:20:58,534 INFO L168 Benchmark]: TraceAbstraction took 211613.20 ms. Allocated memory was 2.3 GB in the beginning and 5.0 GB in the end (delta: 2.7 GB). Free memory was 1.9 GB in the beginning and 4.7 GB in the end (delta: -2.8 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:20:58,539 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1405.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 235.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 766.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -912.4 MB). Peak memory consumption was 31.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 154.64 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5500.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 281.3 MB). Peak memory consumption was 281.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211613.20 ms. Allocated memory was 2.3 GB in the beginning and 5.0 GB in the end (delta: 2.7 GB). Free memory was 1.9 GB in the beginning and 4.7 GB in the end (delta: -2.8 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 130). Cancelled while BasicCegarLoop was constructing difference of abstraction (7189states) and FLOYD_HOARE automaton (currently 9 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (401 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 211.5s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 185.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2595 SDtfs, 27195 SDslu, 1876 SDs, 0 SdLazy, 23968 SolverSat, 2693 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 78.0s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 1881 GetRequests, 1488 SyntacticMatches, 284 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2525 ImplicationChecksByTransitivity, 11.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7189occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.9s AbstIntTime, 5 AbstIntIterations, 5 AbstIntStrong, 0.9976105190099764 AbsIntWeakeningRatio, 0.08717105263157894 AbsIntAvgWeakeningVarsNumRemoved, 11.424342105263158 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 1803 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 2127 NumberOfCodeBlocks, 2127 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2119 ConstructedInterpolants, 0 QuantifiedInterpolants, 2399453 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 757/1716 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown