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_label44_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:44:47,733 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:44:47,736 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:44:47,754 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:44:47,754 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:44:47,755 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:44:47,757 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:44:47,761 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:44:47,764 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:44:47,766 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:44:47,767 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:44:47,769 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:44:47,770 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:44:47,771 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:44:47,772 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:44:47,775 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:44:47,776 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:44:47,786 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:44:47,788 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:44:47,792 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:44:47,793 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:44:47,795 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:44:47,799 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:44:47,800 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:44:47,800 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:44:47,802 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:44:47,804 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:44:47,805 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:44:47,806 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:44:47,806 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:44:47,807 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:44:47,807 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:44:47,808 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:44:47,808 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:44:47,809 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:44:47,809 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:44:47,810 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 16:44:47,826 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:44:47,826 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:44:47,827 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:44:47,827 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:44:47,828 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:44:47,828 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:44:47,828 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:44:47,828 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:44:47,829 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:44:47,829 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:44:47,829 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:44:47,829 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:44:47,829 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:44:47,830 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:44:47,830 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:44:47,831 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:44:47,831 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:44:47,831 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:44:47,831 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:44:47,831 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:44:47,832 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:44:47,832 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:44:47,832 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:44:47,832 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:44:47,832 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:44:47,834 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:44:47,835 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:44:47,835 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:44:47,835 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:44:47,835 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:44:47,835 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:44:47,836 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:44:47,836 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:44:47,836 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:44:47,836 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:44:47,903 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:44:47,922 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:44:47,926 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:44:47,928 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:44:47,929 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:44:47,929 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label44_false-unreach-call.c [2018-11-12 16:44:47,998 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6b7d5a7f/52ecc9d054d74aa191eb42fbf9966931/FLAGc0f92d8d7 [2018-11-12 16:44:48,625 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:44:48,631 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label44_false-unreach-call.c [2018-11-12 16:44:48,655 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6b7d5a7f/52ecc9d054d74aa191eb42fbf9966931/FLAGc0f92d8d7 [2018-11-12 16:44:48,671 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6b7d5a7f/52ecc9d054d74aa191eb42fbf9966931 [2018-11-12 16:44:48,682 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:44:48,684 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:44:48,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:44:48,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:44:48,689 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:44:48,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:44:48" (1/1) ... [2018-11-12 16:44:48,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52c4b27e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:48, skipping insertion in model container [2018-11-12 16:44:48,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:44:48" (1/1) ... [2018-11-12 16:44:48,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:44:48,786 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:44:49,500 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:44:49,505 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:44:49,802 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:44:49,824 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:44:49,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:49 WrapperNode [2018-11-12 16:44:49,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:44:49,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:44:49,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:44:49,826 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:44:49,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:49" (1/1) ... [2018-11-12 16:44:50,014 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:49" (1/1) ... [2018-11-12 16:44:50,023 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:44:50,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:44:50,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:44:50,023 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:44:50,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:49" (1/1) ... [2018-11-12 16:44:50,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:49" (1/1) ... [2018-11-12 16:44:50,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:49" (1/1) ... [2018-11-12 16:44:50,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:49" (1/1) ... [2018-11-12 16:44:50,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:49" (1/1) ... [2018-11-12 16:44:50,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:49" (1/1) ... [2018-11-12 16:44:50,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:49" (1/1) ... [2018-11-12 16:44:50,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:44:50,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:44:50,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:44:50,171 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:44:50,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:49" (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 16:44:50,241 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:44:50,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:44:50,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:44:50,242 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:44:50,242 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:44:50,243 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:44:50,243 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:44:50,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:44:50,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:44:50,243 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:44:50,243 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:44:56,790 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:44:56,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:44:56 BoogieIcfgContainer [2018-11-12 16:44:56,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:44:56,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:44:56,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:44:56,797 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:44:56,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:44:48" (1/3) ... [2018-11-12 16:44:56,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d3cf9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:44:56, skipping insertion in model container [2018-11-12 16:44:56,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:49" (2/3) ... [2018-11-12 16:44:56,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d3cf9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:44:56, skipping insertion in model container [2018-11-12 16:44:56,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:44:56" (3/3) ... [2018-11-12 16:44:56,804 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label44_false-unreach-call.c [2018-11-12 16:44:56,816 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:44:56,830 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:44:56,849 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:44:56,897 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:44:56,897 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:44:56,898 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:44:56,898 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:44:56,898 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:44:56,898 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:44:56,898 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:44:56,901 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:44:56,943 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-12 16:44:56,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-12 16:44:56,955 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:44:56,956 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] [2018-11-12 16:44:56,958 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:44:56,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:56,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1931108421, now seen corresponding path program 1 times [2018-11-12 16:44:56,968 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:44:57,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:57,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:44:57,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:57,027 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:44:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:44:57,419 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:44:57,450 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 16:44:57,453 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:44:57,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:44:57,453 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:44:57,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:44:57,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:44:57,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:44:57,477 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-12 16:45:01,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:45:01,090 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-12 16:45:01,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:45:01,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2018-11-12 16:45:01,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:45:01,125 INFO L225 Difference]: With dead ends: 1156 [2018-11-12 16:45:01,126 INFO L226 Difference]: Without dead ends: 744 [2018-11-12 16:45:01,134 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:45:01,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-12 16:45:01,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-12 16:45:01,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-12 16:45:01,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1343 transitions. [2018-11-12 16:45:01,240 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1343 transitions. Word has length 37 [2018-11-12 16:45:01,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:45:01,240 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1343 transitions. [2018-11-12 16:45:01,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:45:01,241 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1343 transitions. [2018-11-12 16:45:01,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-11-12 16:45:01,248 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:45:01,248 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:45:01,248 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:45:01,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:45:01,249 INFO L82 PathProgramCache]: Analyzing trace with hash 133481241, now seen corresponding path program 1 times [2018-11-12 16:45:01,249 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:45:01,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:45:01,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:45:01,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:45:01,251 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:45:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:45:01,604 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:45:01,605 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:45:01,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:45:01,605 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:45:01,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:45:01,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:45:01,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:45:01,608 INFO L87 Difference]: Start difference. First operand 744 states and 1343 transitions. Second operand 6 states. [2018-11-12 16:45:08,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:45:08,528 INFO L93 Difference]: Finished difference Result 2846 states and 5292 transitions. [2018-11-12 16:45:08,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:45:08,531 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2018-11-12 16:45:08,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:45:08,547 INFO L225 Difference]: With dead ends: 2846 [2018-11-12 16:45:08,547 INFO L226 Difference]: Without dead ends: 2108 [2018-11-12 16:45:08,555 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 16:45:08,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2018-11-12 16:45:08,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 2090. [2018-11-12 16:45:08,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2090 states. [2018-11-12 16:45:08,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3323 transitions. [2018-11-12 16:45:08,661 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3323 transitions. Word has length 110 [2018-11-12 16:45:08,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:45:08,662 INFO L480 AbstractCegarLoop]: Abstraction has 2090 states and 3323 transitions. [2018-11-12 16:45:08,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:45:08,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3323 transitions. [2018-11-12 16:45:08,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-11-12 16:45:08,672 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:45:08,675 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:45:08,675 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:45:08,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:45:08,676 INFO L82 PathProgramCache]: Analyzing trace with hash 851745708, now seen corresponding path program 1 times [2018-11-12 16:45:08,676 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:45:08,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:45:08,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:45:08,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:45:08,678 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:45:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:45:09,017 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:45:09,403 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:45:09,403 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:45:09,404 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:45:09,404 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:45:09,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:45:09,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:45:09,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:45:09,407 INFO L87 Difference]: Start difference. First operand 2090 states and 3323 transitions. Second operand 6 states. [2018-11-12 16:45:14,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:45:14,049 INFO L93 Difference]: Finished difference Result 5549 states and 9209 transitions. [2018-11-12 16:45:14,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:45:14,052 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-11-12 16:45:14,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:45:14,079 INFO L225 Difference]: With dead ends: 5549 [2018-11-12 16:45:14,080 INFO L226 Difference]: Without dead ends: 3465 [2018-11-12 16:45:14,094 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:45:14,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3465 states. [2018-11-12 16:45:14,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3465 to 3433. [2018-11-12 16:45:14,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3433 states. [2018-11-12 16:45:14,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3433 states to 3433 states and 5124 transitions. [2018-11-12 16:45:14,208 INFO L78 Accepts]: Start accepts. Automaton has 3433 states and 5124 transitions. Word has length 139 [2018-11-12 16:45:14,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:45:14,209 INFO L480 AbstractCegarLoop]: Abstraction has 3433 states and 5124 transitions. [2018-11-12 16:45:14,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:45:14,209 INFO L276 IsEmpty]: Start isEmpty. Operand 3433 states and 5124 transitions. [2018-11-12 16:45:14,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-11-12 16:45:14,217 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:45:14,217 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 16:45:14,218 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:45:14,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:45:14,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1311109898, now seen corresponding path program 1 times [2018-11-12 16:45:14,218 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:45:14,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:45:14,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:45:14,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:45:14,220 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:45:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:45:14,595 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 60 proven. 97 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 16:45:14,596 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:45:14,596 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:45:14,597 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 251 with the following transitions: [2018-11-12 16:45:14,599 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [375], [377], [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], [800], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:45:14,652 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:45:14,652 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:45:15,464 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:45:15,466 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Performed 1920 root evaluator evaluations with a maximum evaluation depth of 6. Performed 1920 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 16:45:15,517 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:45:15,517 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:45:16,513 INFO L227 lantSequenceWeakener]: Weakened 228 states. On average, predicates are now at 77.76% of their original sizes. [2018-11-12 16:45:16,514 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:45:17,459 INFO L415 sIntCurrentIteration]: We unified 249 AI predicates to 249 [2018-11-12 16:45:17,460 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:45:17,461 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:45:17,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-12 16:45:17,461 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:45:17,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 16:45:17,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 16:45:17,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-12 16:45:17,463 INFO L87 Difference]: Start difference. First operand 3433 states and 5124 transitions. Second operand 10 states. [2018-11-12 16:45:22,423 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:45:41,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:45:41,674 INFO L93 Difference]: Finished difference Result 7203 states and 10791 transitions. [2018-11-12 16:45:41,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 16:45:41,674 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 250 [2018-11-12 16:45:41,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:45:41,695 INFO L225 Difference]: With dead ends: 7203 [2018-11-12 16:45:41,695 INFO L226 Difference]: Without dead ends: 3776 [2018-11-12 16:45:41,706 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 253 GetRequests, 212 SyntacticMatches, 29 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-12 16:45:41,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2018-11-12 16:45:41,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3771. [2018-11-12 16:45:41,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3771 states. [2018-11-12 16:45:41,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3771 states to 3771 states and 5470 transitions. [2018-11-12 16:45:41,807 INFO L78 Accepts]: Start accepts. Automaton has 3771 states and 5470 transitions. Word has length 250 [2018-11-12 16:45:41,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:45:41,808 INFO L480 AbstractCegarLoop]: Abstraction has 3771 states and 5470 transitions. [2018-11-12 16:45:41,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 16:45:41,808 INFO L276 IsEmpty]: Start isEmpty. Operand 3771 states and 5470 transitions. [2018-11-12 16:45:41,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-11-12 16:45:41,816 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:45:41,816 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:45:41,819 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:45:41,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:45:41,820 INFO L82 PathProgramCache]: Analyzing trace with hash -816156199, now seen corresponding path program 1 times [2018-11-12 16:45:41,820 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:45:41,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:45:41,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:45:41,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:45:41,822 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:45:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:45:42,154 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 96 proven. 206 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-12 16:45:42,154 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:45:42,155 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:45:42,155 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 343 with the following transitions: [2018-11-12 16:45:42,155 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [375], [377], [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], [800], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:45:42,160 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:45:42,161 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:45:42,222 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:45:42,688 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:45:42,688 INFO L272 AbstractInterpreter]: Visited 120 different actions 347 times. Merged at 5 different actions 9 times. Never widened. Performed 4859 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4859 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 16:45:42,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:45:42,715 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:45:43,425 INFO L227 lantSequenceWeakener]: Weakened 98 states. On average, predicates are now at 77.69% of their original sizes. [2018-11-12 16:45:43,425 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:45:44,912 INFO L415 sIntCurrentIteration]: We unified 341 AI predicates to 341 [2018-11-12 16:45:44,912 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:45:44,913 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:45:44,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-12 16:45:44,913 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:45:44,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 16:45:44,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 16:45:44,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2018-11-12 16:45:44,915 INFO L87 Difference]: Start difference. First operand 3771 states and 5470 transitions. Second operand 18 states. [2018-11-12 16:46:19,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:46:19,920 INFO L93 Difference]: Finished difference Result 8372 states and 12309 transitions. [2018-11-12 16:46:19,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-12 16:46:19,920 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 342 [2018-11-12 16:46:19,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:46:19,942 INFO L225 Difference]: With dead ends: 8372 [2018-11-12 16:46:19,942 INFO L226 Difference]: Without dead ends: 4945 [2018-11-12 16:46:19,954 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 351 GetRequests, 310 SyntacticMatches, 15 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2018-11-12 16:46:19,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4945 states. [2018-11-12 16:46:20,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4945 to 4715. [2018-11-12 16:46:20,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4715 states. [2018-11-12 16:46:20,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4715 states to 4715 states and 6465 transitions. [2018-11-12 16:46:20,082 INFO L78 Accepts]: Start accepts. Automaton has 4715 states and 6465 transitions. Word has length 342 [2018-11-12 16:46:20,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:46:20,083 INFO L480 AbstractCegarLoop]: Abstraction has 4715 states and 6465 transitions. [2018-11-12 16:46:20,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 16:46:20,083 INFO L276 IsEmpty]: Start isEmpty. Operand 4715 states and 6465 transitions. [2018-11-12 16:46:20,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-11-12 16:46:20,093 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:46:20,093 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 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 16:46:20,093 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:46:20,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:46:20,094 INFO L82 PathProgramCache]: Analyzing trace with hash 418221137, now seen corresponding path program 1 times [2018-11-12 16:46:20,094 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:46:20,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:46:20,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:46:20,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:46:20,095 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:46:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:46:20,425 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:46:21,028 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 96 proven. 235 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-12 16:46:21,029 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:46:21,029 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:46:21,030 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 379 with the following transitions: [2018-11-12 16:46:21,030 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [375], [377], [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], [800], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:46:21,035 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:46:21,036 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:46:21,222 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:46:22,216 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:46:22,216 INFO L272 AbstractInterpreter]: Visited 137 different actions 398 times. Merged at 5 different actions 9 times. Never widened. Performed 7069 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7069 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 16:46:22,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:46:22,255 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:46:22,774 INFO L227 lantSequenceWeakener]: Weakened 98 states. On average, predicates are now at 77.69% of their original sizes. [2018-11-12 16:46:22,774 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:46:23,659 INFO L415 sIntCurrentIteration]: We unified 377 AI predicates to 377 [2018-11-12 16:46:23,659 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:46:23,659 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:46:23,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-11-12 16:46:23,660 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:46:23,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 16:46:23,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 16:46:23,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-11-12 16:46:23,662 INFO L87 Difference]: Start difference. First operand 4715 states and 6465 transitions. Second operand 17 states. [2018-11-12 16:47:01,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:47:01,110 INFO L93 Difference]: Finished difference Result 9374 states and 13386 transitions. [2018-11-12 16:47:01,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-12 16:47:01,110 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 378 [2018-11-12 16:47:01,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:47:01,131 INFO L225 Difference]: With dead ends: 9374 [2018-11-12 16:47:01,132 INFO L226 Difference]: Without dead ends: 5603 [2018-11-12 16:47:01,143 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 386 GetRequests, 347 SyntacticMatches, 15 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2018-11-12 16:47:01,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5603 states. [2018-11-12 16:47:01,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5603 to 5371. [2018-11-12 16:47:01,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5371 states. [2018-11-12 16:47:01,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5371 states to 5371 states and 7160 transitions. [2018-11-12 16:47:01,276 INFO L78 Accepts]: Start accepts. Automaton has 5371 states and 7160 transitions. Word has length 378 [2018-11-12 16:47:01,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:47:01,277 INFO L480 AbstractCegarLoop]: Abstraction has 5371 states and 7160 transitions. [2018-11-12 16:47:01,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 16:47:01,277 INFO L276 IsEmpty]: Start isEmpty. Operand 5371 states and 7160 transitions. [2018-11-12 16:47:01,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2018-11-12 16:47:01,294 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:47:01,294 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:47:01,295 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:47:01,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:47:01,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1577086863, now seen corresponding path program 1 times [2018-11-12 16:47:01,295 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:47:01,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:47:01,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:47:01,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:47:01,296 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:47:01,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:47:01,710 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:47:08,549 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 96 proven. 235 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-12 16:47:08,549 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:47:08,550 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:47:08,550 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 491 with the following transitions: [2018-11-12 16:47:08,551 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [375], [377], [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], [800], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [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 16:47:08,563 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:47:08,563 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:47:09,017 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:47:09,017 INFO L272 AbstractInterpreter]: Visited 249 different actions 492 times. Merged at 5 different actions 5 times. Never widened. Performed 6288 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6288 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 16:47:09,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:47:09,022 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:47:09,518 INFO L227 lantSequenceWeakener]: Weakened 260 states. On average, predicates are now at 77.84% of their original sizes. [2018-11-12 16:47:09,518 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:47:11,357 INFO L415 sIntCurrentIteration]: We unified 489 AI predicates to 489 [2018-11-12 16:47:11,357 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:47:11,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:47:11,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-12 16:47:11,358 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:47:11,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 16:47:11,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 16:47:11,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-11-12 16:47:11,360 INFO L87 Difference]: Start difference. First operand 5371 states and 7160 transitions. Second operand 18 states. [2018-11-12 16:47:14,323 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:47:41,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:47:41,846 INFO L93 Difference]: Finished difference Result 10120 states and 14087 transitions. [2018-11-12 16:47:41,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-12 16:47:41,846 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 490 [2018-11-12 16:47:41,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:47:41,867 INFO L225 Difference]: With dead ends: 10120 [2018-11-12 16:47:41,867 INFO L226 Difference]: Without dead ends: 6007 [2018-11-12 16:47:41,880 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 505 GetRequests, 408 SyntacticMatches, 65 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2018-11-12 16:47:41,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6007 states. [2018-11-12 16:47:41,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6007 to 6002. [2018-11-12 16:47:41,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6002 states. [2018-11-12 16:47:42,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6002 states to 6002 states and 7823 transitions. [2018-11-12 16:47:42,005 INFO L78 Accepts]: Start accepts. Automaton has 6002 states and 7823 transitions. Word has length 490 [2018-11-12 16:47:42,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:47:42,006 INFO L480 AbstractCegarLoop]: Abstraction has 6002 states and 7823 transitions. [2018-11-12 16:47:42,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 16:47:42,006 INFO L276 IsEmpty]: Start isEmpty. Operand 6002 states and 7823 transitions. [2018-11-12 16:47:42,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2018-11-12 16:47:42,022 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:47:42,023 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:47:42,023 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:47:42,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:47:42,024 INFO L82 PathProgramCache]: Analyzing trace with hash -39380511, now seen corresponding path program 1 times [2018-11-12 16:47:42,024 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:47:42,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:47:42,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:47:42,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:47:42,025 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:47:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:47:42,449 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:47:42,791 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 96 proven. 235 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-12 16:47:42,791 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:47:42,791 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:47:42,792 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 499 with the following transitions: [2018-11-12 16:47:42,792 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [375], [377], [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], [800], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [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], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:47:42,796 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:47:42,796 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:47:45,753 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:47:45,754 INFO L272 AbstractInterpreter]: Visited 257 different actions 2265 times. Merged at 5 different actions 40 times. Widened at 1 different actions 4 times. Performed 41984 root evaluator evaluations with a maximum evaluation depth of 6. Performed 41984 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 16:47:45,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:47:45,760 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:47:46,585 INFO L227 lantSequenceWeakener]: Weakened 44 states. On average, predicates are now at 80.07% of their original sizes. [2018-11-12 16:47:46,585 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:47:46,988 INFO L415 sIntCurrentIteration]: We unified 497 AI predicates to 497 [2018-11-12 16:47:46,988 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:47:46,989 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:47:46,989 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-11-12 16:47:46,989 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:47:46,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-12 16:47:46,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-12 16:47:46,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2018-11-12 16:47:46,990 INFO L87 Difference]: Start difference. First operand 6002 states and 7823 transitions. Second operand 22 states. [2018-11-12 16:47:49,335 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:48:03,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:48:03,850 INFO L93 Difference]: Finished difference Result 10756 states and 14711 transitions. [2018-11-12 16:48:03,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-12 16:48:03,850 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 498 [2018-11-12 16:48:03,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:48:03,870 INFO L225 Difference]: With dead ends: 10756 [2018-11-12 16:48:03,870 INFO L226 Difference]: Without dead ends: 6643 [2018-11-12 16:48:03,884 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 510 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=239, Invalid=951, Unknown=0, NotChecked=0, Total=1190 [2018-11-12 16:48:03,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6643 states. [2018-11-12 16:48:03,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6643 to 6635. [2018-11-12 16:48:03,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6635 states. [2018-11-12 16:48:04,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6635 states to 6635 states and 8495 transitions. [2018-11-12 16:48:04,004 INFO L78 Accepts]: Start accepts. Automaton has 6635 states and 8495 transitions. Word has length 498 [2018-11-12 16:48:04,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:48:04,005 INFO L480 AbstractCegarLoop]: Abstraction has 6635 states and 8495 transitions. [2018-11-12 16:48:04,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-12 16:48:04,005 INFO L276 IsEmpty]: Start isEmpty. Operand 6635 states and 8495 transitions. [2018-11-12 16:48:04,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2018-11-12 16:48:04,027 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:48:04,027 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 16:48:04,028 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:48:04,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:48:04,028 INFO L82 PathProgramCache]: Analyzing trace with hash 294763348, now seen corresponding path program 1 times [2018-11-12 16:48:04,028 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:48:04,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:48:04,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:48:04,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:48:04,029 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:48:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:48:04,927 WARN L179 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-12 16:48:06,396 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 220 proven. 209 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2018-11-12 16:48:06,397 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:48:06,397 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:48:06,397 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 583 with the following transitions: [2018-11-12 16:48:06,397 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [375], [377], [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], [800], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [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 16:48:06,401 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:48:06,401 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:48:06,488 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:48:07,203 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:48:07,203 INFO L272 AbstractInterpreter]: Visited 251 different actions 993 times. Merged at 7 different actions 25 times. Never widened. Performed 15582 root evaluator evaluations with a maximum evaluation depth of 6. Performed 15582 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 16:48:07,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:48:07,213 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:48:07,213 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:48:07,213 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 16:48:07,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:48:07,225 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:48:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:48:07,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:48:07,928 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 545 proven. 2 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2018-11-12 16:48:07,928 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:48:08,195 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-12 16:48:09,074 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 220 proven. 209 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2018-11-12 16:48:09,096 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:48:09,096 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2018-11-12 16:48:09,096 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:48:09,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 16:48:09,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 16:48:09,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2018-11-12 16:48:09,098 INFO L87 Difference]: Start difference. First operand 6635 states and 8495 transitions. Second operand 16 states. [2018-11-12 16:48:12,950 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 26 [2018-11-12 16:48:24,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:48:24,979 INFO L93 Difference]: Finished difference Result 15125 states and 21342 transitions. [2018-11-12 16:48:24,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-11-12 16:48:24,979 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 582 [2018-11-12 16:48:24,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:48:25,005 INFO L225 Difference]: With dead ends: 15125 [2018-11-12 16:48:25,005 INFO L226 Difference]: Without dead ends: 7234 [2018-11-12 16:48:25,048 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1267 GetRequests, 1201 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1387 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=955, Invalid=3601, Unknown=0, NotChecked=0, Total=4556 [2018-11-12 16:48:25,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7234 states. [2018-11-12 16:48:25,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7234 to 7053. [2018-11-12 16:48:25,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7053 states. [2018-11-12 16:48:25,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7053 states to 7053 states and 8121 transitions. [2018-11-12 16:48:25,191 INFO L78 Accepts]: Start accepts. Automaton has 7053 states and 8121 transitions. Word has length 582 [2018-11-12 16:48:25,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:48:25,191 INFO L480 AbstractCegarLoop]: Abstraction has 7053 states and 8121 transitions. [2018-11-12 16:48:25,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 16:48:25,192 INFO L276 IsEmpty]: Start isEmpty. Operand 7053 states and 8121 transitions. [2018-11-12 16:48:25,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 716 [2018-11-12 16:48:25,210 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:48:25,210 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2018-11-12 16:48:25,210 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:48:25,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:48:25,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1834546296, now seen corresponding path program 1 times [2018-11-12 16:48:25,211 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:48:25,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:48:25,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:48:25,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:48:25,212 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:48:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:48:25,651 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 Received shutdown request... [2018-11-12 16:48:26,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1198 backedges. 172 proven. 679 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2018-11-12 16:48:26,219 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:48:26,219 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:48:26,219 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 716 with the following transitions: [2018-11-12 16:48:26,219 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [375], [377], [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], [796], [797], [800], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [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], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:48:26,223 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:48:26,223 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:48:26,223 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-12 16:48:26,224 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-12 16:48:26,224 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 16:48:26,225 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:48:26,225 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 16:48:26,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:48:26,236 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:48:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:48:26,414 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:48:26,442 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-12 16:48:26,643 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:48:26,644 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:48:26,649 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:48:26,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:48:26 BoogieIcfgContainer [2018-11-12 16:48:26,649 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:48:26,650 INFO L168 Benchmark]: Toolchain (without parser) took 217967.08 ms. Allocated memory was 1.5 GB in the beginning and 5.3 GB in the end (delta: 3.7 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-12 16:48:26,651 INFO L168 Benchmark]: CDTParser took 0.27 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 16:48:26,652 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1139.63 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-12 16:48:26,652 INFO L168 Benchmark]: Boogie Procedure Inliner took 197.40 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -873.6 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-11-12 16:48:26,654 INFO L168 Benchmark]: Boogie Preprocessor took 147.27 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 16:48:26,654 INFO L168 Benchmark]: RCFGBuilder took 6620.17 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: 247.9 MB). Peak memory consumption was 247.9 MB. Max. memory is 7.1 GB. [2018-11-12 16:48:26,655 INFO L168 Benchmark]: TraceAbstraction took 209857.57 ms. Allocated memory was 2.3 GB in the beginning and 5.3 GB in the end (delta: 3.0 GB). Free memory was 2.0 GB in the beginning and 2.8 GB in the end (delta: -874.7 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-12 16:48:26,660 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 1139.63 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 197.40 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -873.6 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 147.27 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 6620.17 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: 247.9 MB). Peak memory consumption was 247.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209857.57 ms. Allocated memory was 2.3 GB in the beginning and 5.3 GB in the end (delta: 3.0 GB). Free memory was 2.0 GB in the beginning and 2.8 GB in the end (delta: -874.7 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 97). Cancelled while BasicCegarLoop was analyzing trace of length 716 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 209.7s OverallTime, 10 OverallIterations, 6 TraceHistogramMax, 175.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2493 SDtfs, 31674 SDslu, 1759 SDs, 0 SdLazy, 36482 SolverSat, 7931 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 74.0s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 3297 GetRequests, 2961 SyntacticMatches, 128 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2702 ImplicationChecksByTransitivity, 11.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7053occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.9s AbstIntTime, 7 AbstIntIterations, 5 AbstIntStrong, 0.9976564116516039 AbsIntWeakeningRatio, 0.07885304659498207 AbsIntAvgWeakeningVarsNumRemoved, 10.01536098310292 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 711 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 3408 NumberOfCodeBlocks, 3408 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 3979 ConstructedInterpolants, 0 QuantifiedInterpolants, 8218767 SizeOfPredicates, 1 NumberOfNonLiveVariables, 848 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 2518/3946 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown