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_label26_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:21:33,780 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:21:33,782 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:21:33,799 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:21:33,799 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:21:33,801 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:21:33,802 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:21:33,804 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:21:33,805 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:21:33,806 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:21:33,807 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:21:33,807 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:21:33,808 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:21:33,809 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:21:33,811 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:21:33,811 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:21:33,812 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:21:33,814 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:21:33,816 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:21:33,818 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:21:33,819 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:21:33,820 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:21:33,823 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:21:33,823 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:21:33,823 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:21:33,824 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:21:33,826 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:21:33,832 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:21:33,832 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:21:33,833 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:21:33,834 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:21:33,834 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:21:33,834 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:21:33,835 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:21:33,838 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:21:33,839 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:21:33,839 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 19:21:33,868 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:21:33,868 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:21:33,869 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:21:33,870 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:21:33,871 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:21:33,871 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:21:33,871 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:21:33,871 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:21:33,871 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:21:33,872 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:21:33,872 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:21:33,872 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:21:33,872 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:21:33,873 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:21:33,874 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:21:33,874 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:21:33,874 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:21:33,874 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:21:33,874 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:21:33,874 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:21:33,875 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:21:33,875 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:21:33,875 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:21:33,875 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:21:33,875 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:21:33,877 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:21:33,877 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:21:33,878 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:21:33,878 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:21:33,878 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:21:33,878 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:21:33,878 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:21:33,879 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:21:33,879 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:21:33,879 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:21:33,950 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:21:33,967 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:21:33,971 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:21:33,973 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:21:33,973 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:21:33,974 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label26_true-unreach-call.c [2018-11-12 19:21:34,039 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1731b9bbd/765a531a27ce443c8e9103851fb93354/FLAG24f5101e7 [2018-11-12 19:21:34,779 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:21:34,780 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label26_true-unreach-call.c [2018-11-12 19:21:34,798 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1731b9bbd/765a531a27ce443c8e9103851fb93354/FLAG24f5101e7 [2018-11-12 19:21:34,816 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1731b9bbd/765a531a27ce443c8e9103851fb93354 [2018-11-12 19:21:34,828 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:21:34,830 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:21:34,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:21:34,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:21:34,836 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:21:34,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:21:34" (1/1) ... [2018-11-12 19:21:34,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2be2f573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:34, skipping insertion in model container [2018-11-12 19:21:34,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:21:34" (1/1) ... [2018-11-12 19:21:34,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:21:34,964 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:21:35,759 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:21:35,764 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:21:36,015 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:21:36,038 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:21:36,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:36 WrapperNode [2018-11-12 19:21:36,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:21:36,040 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:21:36,040 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:21:36,040 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:21:36,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:36" (1/1) ... [2018-11-12 19:21:36,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:36" (1/1) ... [2018-11-12 19:21:36,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:21:36,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:21:36,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:21:36,221 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:21:36,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:36" (1/1) ... [2018-11-12 19:21:36,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:36" (1/1) ... [2018-11-12 19:21:36,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:36" (1/1) ... [2018-11-12 19:21:36,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:36" (1/1) ... [2018-11-12 19:21:36,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:36" (1/1) ... [2018-11-12 19:21:36,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:36" (1/1) ... [2018-11-12 19:21:36,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:36" (1/1) ... [2018-11-12 19:21:36,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:21:36,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:21:36,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:21:36,399 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:21:36,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:21:36,468 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:21:36,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:21:36,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:21:36,469 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:21:36,469 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:21:36,469 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:21:36,469 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:21:36,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:21:36,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:21:36,470 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:21:36,470 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:21:42,694 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:21:42,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:21:42 BoogieIcfgContainer [2018-11-12 19:21:42,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:21:42,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:21:42,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:21:42,700 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:21:42,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:21:34" (1/3) ... [2018-11-12 19:21:42,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27061d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:21:42, skipping insertion in model container [2018-11-12 19:21:42,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:36" (2/3) ... [2018-11-12 19:21:42,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27061d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:21:42, skipping insertion in model container [2018-11-12 19:21:42,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:21:42" (3/3) ... [2018-11-12 19:21:42,703 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label26_true-unreach-call.c [2018-11-12 19:21:42,714 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:21:42,729 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:21:42,750 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:21:42,801 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:21:42,802 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:21:42,802 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:21:42,802 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:21:42,802 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:21:42,802 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:21:42,803 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:21:42,803 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:21:42,855 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-12 19:21:42,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-12 19:21:42,867 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:21:42,868 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:21:42,871 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:21:42,876 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:21:42,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1191514292, now seen corresponding path program 1 times [2018-11-12 19:21:42,878 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:21:42,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:21:42,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:21:42,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:21:42,935 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:21:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:21:43,361 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:21:43,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:21:43,482 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:21:43,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 19:21:43,482 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:21:43,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:21:43,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:21:43,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:21:43,515 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-12 19:21:47,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:21:47,467 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-12 19:21:47,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:21:47,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2018-11-12 19:21:47,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:21:47,505 INFO L225 Difference]: With dead ends: 1156 [2018-11-12 19:21:47,505 INFO L226 Difference]: Without dead ends: 744 [2018-11-12 19:21:47,514 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:21:47,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-12 19:21:47,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-12 19:21:47,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-12 19:21:47,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1343 transitions. [2018-11-12 19:21:47,619 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1343 transitions. Word has length 42 [2018-11-12 19:21:47,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:21:47,620 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1343 transitions. [2018-11-12 19:21:47,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:21:47,621 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1343 transitions. [2018-11-12 19:21:47,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-11-12 19:21:47,630 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:21:47,631 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:21:47,631 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:21:47,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:21:47,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1985483383, now seen corresponding path program 1 times [2018-11-12 19:21:47,632 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:21:47,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:21:47,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:21:47,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:21:47,635 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:21:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:21:47,941 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:21:47,941 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:21:47,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:21:47,942 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:21:47,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:21:47,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:21:47,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:21:47,945 INFO L87 Difference]: Start difference. First operand 744 states and 1343 transitions. Second operand 6 states. [2018-11-12 19:21:55,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:21:55,197 INFO L93 Difference]: Finished difference Result 2846 states and 5292 transitions. [2018-11-12 19:21:55,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:21:55,197 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2018-11-12 19:21:55,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:21:55,216 INFO L225 Difference]: With dead ends: 2846 [2018-11-12 19:21:55,216 INFO L226 Difference]: Without dead ends: 2108 [2018-11-12 19:21:55,224 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:21:55,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2018-11-12 19:21:55,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 2090. [2018-11-12 19:21:55,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2090 states. [2018-11-12 19:21:55,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3323 transitions. [2018-11-12 19:21:55,328 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3323 transitions. Word has length 115 [2018-11-12 19:21:55,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:21:55,329 INFO L480 AbstractCegarLoop]: Abstraction has 2090 states and 3323 transitions. [2018-11-12 19:21:55,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:21:55,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3323 transitions. [2018-11-12 19:21:55,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-11-12 19:21:55,342 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:21:55,344 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:21:55,344 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:21:55,344 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:21:55,344 INFO L82 PathProgramCache]: Analyzing trace with hash 808284322, now seen corresponding path program 1 times [2018-11-12 19:21:55,345 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:21:55,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:21:55,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:21:55,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:21:55,347 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:21:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:21:55,615 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:21:55,615 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:21:55,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:21:55,616 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:21:55,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:21:55,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:21:55,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:21:55,617 INFO L87 Difference]: Start difference. First operand 2090 states and 3323 transitions. Second operand 6 states. [2018-11-12 19:22:00,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:22:00,963 INFO L93 Difference]: Finished difference Result 5549 states and 9209 transitions. [2018-11-12 19:22:00,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:22:00,966 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2018-11-12 19:22:00,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:22:00,993 INFO L225 Difference]: With dead ends: 5549 [2018-11-12 19:22:00,994 INFO L226 Difference]: Without dead ends: 3465 [2018-11-12 19:22:01,008 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 19:22:01,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3465 states. [2018-11-12 19:22:01,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3465 to 3433. [2018-11-12 19:22:01,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3433 states. [2018-11-12 19:22:01,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3433 states to 3433 states and 5124 transitions. [2018-11-12 19:22:01,116 INFO L78 Accepts]: Start accepts. Automaton has 3433 states and 5124 transitions. Word has length 144 [2018-11-12 19:22:01,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:22:01,117 INFO L480 AbstractCegarLoop]: Abstraction has 3433 states and 5124 transitions. [2018-11-12 19:22:01,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:22:01,117 INFO L276 IsEmpty]: Start isEmpty. Operand 3433 states and 5124 transitions. [2018-11-12 19:22:01,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-11-12 19:22:01,126 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:22:01,126 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:22:01,127 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:22:01,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:22:01,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1228883702, now seen corresponding path program 1 times [2018-11-12 19:22:01,127 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:22:01,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:22:01,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:22:01,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:22:01,129 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:22:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:22:01,631 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:22:01,985 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:22:01,985 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:22:01,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:22:01,985 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:22:01,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:22:01,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:22:01,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:22:01,987 INFO L87 Difference]: Start difference. First operand 3433 states and 5124 transitions. Second operand 6 states. [2018-11-12 19:22:04,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:22:04,879 INFO L93 Difference]: Finished difference Result 8945 states and 13969 transitions. [2018-11-12 19:22:04,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:22:04,880 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 316 [2018-11-12 19:22:04,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:22:04,915 INFO L225 Difference]: With dead ends: 8945 [2018-11-12 19:22:04,916 INFO L226 Difference]: Without dead ends: 5518 [2018-11-12 19:22:04,931 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:22:04,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5518 states. [2018-11-12 19:22:05,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5518 to 5504. [2018-11-12 19:22:05,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5504 states. [2018-11-12 19:22:05,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5504 states to 5504 states and 7967 transitions. [2018-11-12 19:22:05,089 INFO L78 Accepts]: Start accepts. Automaton has 5504 states and 7967 transitions. Word has length 316 [2018-11-12 19:22:05,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:22:05,090 INFO L480 AbstractCegarLoop]: Abstraction has 5504 states and 7967 transitions. [2018-11-12 19:22:05,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:22:05,090 INFO L276 IsEmpty]: Start isEmpty. Operand 5504 states and 7967 transitions. [2018-11-12 19:22:05,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-11-12 19:22:05,109 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:22:05,109 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:22:05,110 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:22:05,110 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:22:05,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1236053316, now seen corresponding path program 1 times [2018-11-12 19:22:05,110 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:22:05,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:22:05,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:22:05,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:22:05,112 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:22:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:22:05,494 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:22:05,607 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 70 proven. 111 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:22:05,608 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:22:05,608 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:22:05,609 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 433 with the following transitions: [2018-11-12 19:22:05,612 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], [379], [387], [395], [403], [411], [415], [417], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [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], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1445], [1449], [1453], [1457], [1461], [1465], [1469], [1473], [1477], [1481], [1485], [1488], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:22:05,677 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:22:05,678 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:22:07,275 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:22:07,277 INFO L272 AbstractInterpreter]: Visited 279 different actions 279 times. Never merged. Never widened. Performed 5644 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5644 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 19:22:07,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:22:07,330 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:22:08,910 INFO L227 lantSequenceWeakener]: Weakened 410 states. On average, predicates are now at 77.6% of their original sizes. [2018-11-12 19:22:08,910 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:22:12,771 INFO L415 sIntCurrentIteration]: We unified 431 AI predicates to 431 [2018-11-12 19:22:12,772 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:22:12,773 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:22:12,773 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-11-12 19:22:12,773 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:22:12,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-12 19:22:12,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-12 19:22:12,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-11-12 19:22:12,775 INFO L87 Difference]: Start difference. First operand 5504 states and 7967 transitions. Second operand 13 states. [2018-11-12 19:22:18,858 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:22:48,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:22:48,379 INFO L93 Difference]: Finished difference Result 11345 states and 16410 transitions. [2018-11-12 19:22:48,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-12 19:22:48,379 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 432 [2018-11-12 19:22:48,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:22:48,405 INFO L225 Difference]: With dead ends: 11345 [2018-11-12 19:22:48,405 INFO L226 Difference]: Without dead ends: 5847 [2018-11-12 19:22:48,425 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 438 GetRequests, 273 SyntacticMatches, 147 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2018-11-12 19:22:48,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5847 states. [2018-11-12 19:22:48,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5847 to 5842. [2018-11-12 19:22:48,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5842 states. [2018-11-12 19:22:48,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5842 states to 5842 states and 8313 transitions. [2018-11-12 19:22:48,565 INFO L78 Accepts]: Start accepts. Automaton has 5842 states and 8313 transitions. Word has length 432 [2018-11-12 19:22:48,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:22:48,566 INFO L480 AbstractCegarLoop]: Abstraction has 5842 states and 8313 transitions. [2018-11-12 19:22:48,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-12 19:22:48,566 INFO L276 IsEmpty]: Start isEmpty. Operand 5842 states and 8313 transitions. [2018-11-12 19:22:48,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2018-11-12 19:22:48,589 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:22:48,590 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:22:48,591 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:22:48,591 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:22:48,591 INFO L82 PathProgramCache]: Analyzing trace with hash -761572322, now seen corresponding path program 1 times [2018-11-12 19:22:48,591 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:22:48,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:22:48,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:22:48,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:22:48,594 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:22:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:22:49,363 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 200 proven. 115 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-11-12 19:22:49,363 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:22:49,363 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:22:49,364 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 525 with the following transitions: [2018-11-12 19:22:49,365 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], [379], [387], [395], [403], [411], [415], [417], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [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], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1445], [1449], [1453], [1457], [1461], [1465], [1469], [1473], [1477], [1481], [1485], [1488], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:22:49,375 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:22:49,375 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:22:49,488 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:22:51,357 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:22:51,357 INFO L272 AbstractInterpreter]: Visited 283 different actions 836 times. Merged at 5 different actions 9 times. Never widened. Performed 14285 root evaluator evaluations with a maximum evaluation depth of 6. Performed 14285 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:22:51,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:22:51,400 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:22:53,023 INFO L227 lantSequenceWeakener]: Weakened 300 states. On average, predicates are now at 77.48% of their original sizes. [2018-11-12 19:22:53,023 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:23:00,076 INFO L415 sIntCurrentIteration]: We unified 523 AI predicates to 523 [2018-11-12 19:23:00,077 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:23:00,077 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:23:00,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-12 19:23:00,078 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:23:00,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 19:23:00,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 19:23:00,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2018-11-12 19:23:00,080 INFO L87 Difference]: Start difference. First operand 5842 states and 8313 transitions. Second operand 18 states. [2018-11-12 19:23:41,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:23:41,605 INFO L93 Difference]: Finished difference Result 12516 states and 17851 transitions. [2018-11-12 19:23:41,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-12 19:23:41,606 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 524 [2018-11-12 19:23:41,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:23:41,647 INFO L225 Difference]: With dead ends: 12516 [2018-11-12 19:23:41,648 INFO L226 Difference]: Without dead ends: 7018 [2018-11-12 19:23:41,668 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 533 GetRequests, 294 SyntacticMatches, 213 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2532 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2018-11-12 19:23:41,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7018 states. [2018-11-12 19:23:41,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7018 to 6788. [2018-11-12 19:23:41,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6788 states. [2018-11-12 19:23:41,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6788 states to 6788 states and 9333 transitions. [2018-11-12 19:23:41,835 INFO L78 Accepts]: Start accepts. Automaton has 6788 states and 9333 transitions. Word has length 524 [2018-11-12 19:23:41,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:23:41,836 INFO L480 AbstractCegarLoop]: Abstraction has 6788 states and 9333 transitions. [2018-11-12 19:23:41,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 19:23:41,836 INFO L276 IsEmpty]: Start isEmpty. Operand 6788 states and 9333 transitions. [2018-11-12 19:23:41,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2018-11-12 19:23:41,862 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:23:41,863 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:23:41,863 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:23:41,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:23:41,864 INFO L82 PathProgramCache]: Analyzing trace with hash 164376854, now seen corresponding path program 1 times [2018-11-12 19:23:41,864 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:23:41,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:23:41,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:23:41,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:23:41,865 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:23:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:23:43,536 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-12 19:23:44,452 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 224 proven. 115 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-11-12 19:23:44,452 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:23:44,452 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:23:44,452 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 561 with the following transitions: [2018-11-12 19:23:44,453 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], [379], [387], [395], [403], [411], [415], [417], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [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], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1445], [1449], [1453], [1457], [1461], [1465], [1469], [1473], [1477], [1481], [1485], [1488], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:23:44,458 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:23:44,458 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:23:44,578 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:23:45,274 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:23:45,274 INFO L272 AbstractInterpreter]: Visited 283 different actions 836 times. Merged at 5 different actions 9 times. Never widened. Performed 16472 root evaluator evaluations with a maximum evaluation depth of 6. Performed 16472 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:23:45,282 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:23:45,282 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:23:46,313 INFO L227 lantSequenceWeakener]: Weakened 280 states. On average, predicates are now at 77.5% of their original sizes. [2018-11-12 19:23:46,313 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:23:53,666 INFO L415 sIntCurrentIteration]: We unified 559 AI predicates to 559 [2018-11-12 19:23:53,666 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:23:53,667 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:23:53,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [13] total 31 [2018-11-12 19:23:53,667 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:23:53,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-12 19:23:53,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-12 19:23:53,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2018-11-12 19:23:53,669 INFO L87 Difference]: Start difference. First operand 6788 states and 9333 transitions. Second operand 20 states. [2018-11-12 19:24:33,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:24:33,986 INFO L93 Difference]: Finished difference Result 13759 states and 19326 transitions. [2018-11-12 19:24:33,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-12 19:24:33,986 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 560 [2018-11-12 19:24:33,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:24:34,008 INFO L225 Difference]: With dead ends: 13759 [2018-11-12 19:24:34,008 INFO L226 Difference]: Without dead ends: 7915 [2018-11-12 19:24:34,029 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 571 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=213, Invalid=779, Unknown=0, NotChecked=0, Total=992 [2018-11-12 19:24:34,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7915 states. [2018-11-12 19:24:34,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7915 to 7438. [2018-11-12 19:24:34,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7438 states. [2018-11-12 19:24:34,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7438 states to 7438 states and 10056 transitions. [2018-11-12 19:24:34,181 INFO L78 Accepts]: Start accepts. Automaton has 7438 states and 10056 transitions. Word has length 560 [2018-11-12 19:24:34,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:24:34,182 INFO L480 AbstractCegarLoop]: Abstraction has 7438 states and 10056 transitions. [2018-11-12 19:24:34,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-12 19:24:34,182 INFO L276 IsEmpty]: Start isEmpty. Operand 7438 states and 10056 transitions. [2018-11-12 19:24:34,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2018-11-12 19:24:34,202 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:24:34,203 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:24:34,203 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:24:34,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:24:34,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1942402250, now seen corresponding path program 1 times [2018-11-12 19:24:34,204 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:24:34,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:24:34,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:24:34,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:24:34,205 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:24:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:24:35,542 WARN L179 SmtUtils]: Spent 939.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-11-12 19:24:36,436 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 215 proven. 257 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-11-12 19:24:36,437 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:24:36,437 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:24:36,438 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 673 with the following transitions: [2018-11-12 19:24:36,438 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], [379], [387], [395], [403], [411], [415], [417], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [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], [1352], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1445], [1449], [1453], [1457], [1461], [1465], [1469], [1473], [1477], [1481], [1485], [1488], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:24:36,442 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:24:36,443 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:24:36,807 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:24:36,808 INFO L272 AbstractInterpreter]: Visited 283 different actions 560 times. Merged at 5 different actions 5 times. Never widened. Performed 7158 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7158 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:24:36,814 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:24:36,814 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:24:37,536 INFO L227 lantSequenceWeakener]: Weakened 258 states. On average, predicates are now at 77.89% of their original sizes. [2018-11-12 19:24:37,536 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:24:38,587 INFO L415 sIntCurrentIteration]: We unified 671 AI predicates to 671 [2018-11-12 19:24:38,587 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:24:38,587 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:24:38,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [8] total 28 [2018-11-12 19:24:38,588 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:24:38,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-12 19:24:38,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-12 19:24:38,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2018-11-12 19:24:38,589 INFO L87 Difference]: Start difference. First operand 7438 states and 10056 transitions. Second operand 22 states. [2018-11-12 19:24:41,572 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:25:06,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:25:06,433 INFO L93 Difference]: Finished difference Result 14267 states and 19753 transitions. [2018-11-12 19:25:06,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-12 19:25:06,433 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 672 [2018-11-12 19:25:06,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:25:06,457 INFO L225 Difference]: With dead ends: 14267 [2018-11-12 19:25:06,457 INFO L226 Difference]: Without dead ends: 8074 [2018-11-12 19:25:06,470 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 688 GetRequests, 621 SyntacticMatches, 30 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=269, Invalid=1213, Unknown=0, NotChecked=0, Total=1482 [2018-11-12 19:25:06,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8074 states. [2018-11-12 19:25:06,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8074 to 8069. [2018-11-12 19:25:06,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8069 states. [2018-11-12 19:25:06,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8069 states to 8069 states and 10719 transitions. [2018-11-12 19:25:06,623 INFO L78 Accepts]: Start accepts. Automaton has 8069 states and 10719 transitions. Word has length 672 [2018-11-12 19:25:06,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:25:06,624 INFO L480 AbstractCegarLoop]: Abstraction has 8069 states and 10719 transitions. [2018-11-12 19:25:06,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-12 19:25:06,624 INFO L276 IsEmpty]: Start isEmpty. Operand 8069 states and 10719 transitions. [2018-11-12 19:25:06,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2018-11-12 19:25:06,645 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:25:06,646 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:25:06,646 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:25:06,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:25:06,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1487490650, now seen corresponding path program 1 times [2018-11-12 19:25:06,647 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:25:06,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:25:06,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:25:06,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:25:06,648 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:25:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-11-12 19:25:07,356 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 111 proven. 402 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-12 19:25:07,356 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:25:07,356 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:25:07,356 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 681 with the following transitions: [2018-11-12 19:25:07,357 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], [379], [387], [395], [403], [411], [415], [417], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [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], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1445], [1449], [1453], [1457], [1461], [1465], [1469], [1473], [1477], [1481], [1485], [1488], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:25:07,361 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:25:07,361 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:25:07,362 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-12 19:25:07,362 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-12 19:25:07,364 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 19:25:07,364 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:25:07,364 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 19:25:07,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:25:07,381 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:25:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:25:07,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:25:07,656 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-12 19:25:07,857 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:25:07,858 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:25:07,863 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:25:07,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:25:07 BoogieIcfgContainer [2018-11-12 19:25:07,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:25:07,864 INFO L168 Benchmark]: Toolchain (without parser) took 213035.02 ms. Allocated memory was 1.5 GB in the beginning and 5.2 GB in the end (delta: 3.7 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -93.9 MB). Peak memory consumption was 3.6 GB. Max. memory is 7.1 GB. [2018-11-12 19:25:07,865 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:25:07,866 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1207.90 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 19:25:07,866 INFO L168 Benchmark]: Boogie Procedure Inliner took 180.08 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 685.2 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -811.6 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-11-12 19:25:07,867 INFO L168 Benchmark]: Boogie Preprocessor took 177.63 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:25:07,868 INFO L168 Benchmark]: RCFGBuilder took 6296.41 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 246.8 MB). Peak memory consumption was 246.8 MB. Max. memory is 7.1 GB. [2018-11-12 19:25:07,869 INFO L168 Benchmark]: TraceAbstraction took 205167.72 ms. Allocated memory was 2.2 GB in the beginning and 5.2 GB in the end (delta: 3.0 GB). Free memory was 1.9 GB in the beginning and 1.5 GB in the end (delta: 386.4 MB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. [2018-11-12 19:25:07,874 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1207.90 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 180.08 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 685.2 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -811.6 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 177.63 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 6296.41 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 246.8 MB). Peak memory consumption was 246.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205167.72 ms. Allocated memory was 2.2 GB in the beginning and 5.2 GB in the end (delta: 3.0 GB). Free memory was 1.9 GB in the beginning and 1.5 GB in the end (delta: 386.4 MB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 112). Cancelled while BasicCegarLoop was analyzing trace of length 681 with TraceHistMax 4,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, 205.0s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 165.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2032 SDtfs, 24942 SDslu, 1504 SDs, 0 SdLazy, 28076 SolverSat, 4337 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 66.6s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 2265 GetRequests, 1737 SyntacticMatches, 395 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4044 ImplicationChecksByTransitivity, 21.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8069occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.9s AbstIntTime, 5 AbstIntIterations, 4 AbstIntStrong, 0.9983667471245117 AbsIntWeakeningRatio, 0.055860805860805864 AbsIntAvgWeakeningVarsNumRemoved, 7.763278388278389 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 781 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 2805 NumberOfCodeBlocks, 2805 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2797 ConstructedInterpolants, 0 QuantifiedInterpolants, 7846625 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 1140/1738 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown