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/Problem13_label12_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:22:03,769 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:22:03,771 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:22:03,783 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:22:03,784 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:22:03,785 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:22:03,786 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:22:03,788 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:22:03,790 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:22:03,791 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:22:03,792 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:22:03,792 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:22:03,793 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:22:03,794 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:22:03,795 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:22:03,796 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:22:03,797 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:22:03,799 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:22:03,804 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:22:03,807 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:22:03,808 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:22:03,815 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:22:03,820 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:22:03,820 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:22:03,820 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:22:03,824 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:22:03,825 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:22:03,826 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:22:03,829 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:22:03,831 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:22:03,833 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:22:03,834 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:22:03,834 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:22:03,834 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:22:03,837 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:22:03,837 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:22:03,838 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 16:22:03,868 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:22:03,869 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:22:03,869 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:22:03,870 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:22:03,871 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:22:03,871 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:22:03,871 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:22:03,871 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:22:03,871 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:22:03,872 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:22:03,872 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:22:03,872 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:22:03,872 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:22:03,876 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:22:03,876 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:22:03,876 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:22:03,877 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:22:03,877 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:22:03,877 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:22:03,877 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:22:03,877 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:22:03,877 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:22:03,879 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:22:03,880 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:22:03,880 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:22:03,880 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:22:03,880 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:22:03,880 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:22:03,881 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:22:03,881 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:22:03,881 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:22:03,881 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:22:03,881 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:22:03,881 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:22:03,882 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:22:03,926 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:22:03,943 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:22:03,947 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:22:03,949 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:22:03,949 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:22:03,950 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label12_false-unreach-call.c [2018-11-12 16:22:04,015 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f5cd135d/fb65d31240a143caa9bd9397c4b8b5c4/FLAGeaa78bb6f [2018-11-12 16:22:04,779 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:22:04,780 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label12_false-unreach-call.c [2018-11-12 16:22:04,823 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f5cd135d/fb65d31240a143caa9bd9397c4b8b5c4/FLAGeaa78bb6f [2018-11-12 16:22:04,839 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f5cd135d/fb65d31240a143caa9bd9397c4b8b5c4 [2018-11-12 16:22:04,851 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:22:04,853 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:22:04,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:22:04,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:22:04,858 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:22:04,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:22:04" (1/1) ... [2018-11-12 16:22:04,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43d31dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:22:04, skipping insertion in model container [2018-11-12 16:22:04,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:22:04" (1/1) ... [2018-11-12 16:22:04,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:22:05,069 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:22:06,761 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:22:06,768 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:22:07,602 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:22:07,640 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:22:07,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:22:07 WrapperNode [2018-11-12 16:22:07,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:22:07,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:22:07,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:22:07,642 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:22:07,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:22:07" (1/1) ... [2018-11-12 16:22:08,038 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:22:07" (1/1) ... [2018-11-12 16:22:08,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:22:08,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:22:08,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:22:08,050 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:22:08,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:22:07" (1/1) ... [2018-11-12 16:22:08,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:22:07" (1/1) ... [2018-11-12 16:22:08,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:22:07" (1/1) ... [2018-11-12 16:22:08,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:22:07" (1/1) ... [2018-11-12 16:22:08,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:22:07" (1/1) ... [2018-11-12 16:22:08,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:22:07" (1/1) ... [2018-11-12 16:22:08,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:22:07" (1/1) ... [2018-11-12 16:22:08,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:22:08,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:22:08,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:22:08,337 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:22:08,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:22:07" (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 16:22:08,419 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:22:08,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:22:08,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:22:08,420 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-12 16:22:08,420 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-12 16:22:08,420 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 16:22:08,421 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 16:22:08,421 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:22:08,421 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:22:08,421 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:22:08,422 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:22:08,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:22:08,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:22:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:22:08,426 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:22:19,934 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:22:19,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:22:19 BoogieIcfgContainer [2018-11-12 16:22:19,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:22:19,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:22:19,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:22:19,939 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:22:19,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:22:04" (1/3) ... [2018-11-12 16:22:19,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64d4ec6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:22:19, skipping insertion in model container [2018-11-12 16:22:19,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:22:07" (2/3) ... [2018-11-12 16:22:19,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64d4ec6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:22:19, skipping insertion in model container [2018-11-12 16:22:19,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:22:19" (3/3) ... [2018-11-12 16:22:19,945 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label12_false-unreach-call.c [2018-11-12 16:22:19,954 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:22:19,963 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:22:19,980 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:22:20,040 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:22:20,040 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:22:20,040 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:22:20,041 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:22:20,041 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:22:20,041 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:22:20,041 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:22:20,041 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:22:20,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-12 16:22:20,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-12 16:22:20,102 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:22:20,103 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:22:20,106 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:22:20,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:22:20,112 INFO L82 PathProgramCache]: Analyzing trace with hash 190790252, now seen corresponding path program 1 times [2018-11-12 16:22:20,114 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:22:20,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:22:20,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:22:20,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:22:20,171 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:22:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:22:20,532 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 16:22:20,534 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:22:20,535 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:22:20,535 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:22:20,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:22:20,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:22:20,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:22:20,562 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-11-12 16:22:34,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:22:34,801 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-11-12 16:22:34,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:22:34,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-11-12 16:22:34,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:22:34,857 INFO L225 Difference]: With dead ends: 3968 [2018-11-12 16:22:34,857 INFO L226 Difference]: Without dead ends: 2842 [2018-11-12 16:22:34,869 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:22:34,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-11-12 16:22:35,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-11-12 16:22:35,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-11-12 16:22:35,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-11-12 16:22:35,052 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 16 [2018-11-12 16:22:35,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:22:35,052 INFO L480 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-11-12 16:22:35,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:22:35,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-11-12 16:22:35,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-11-12 16:22:35,058 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:22:35,058 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:22:35,058 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:22:35,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:22:35,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1385372312, now seen corresponding path program 1 times [2018-11-12 16:22:35,059 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:22:35,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:22:35,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:22:35,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:22:35,061 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:22:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:22:35,377 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:22:35,378 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:22:35,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:22:35,378 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:22:35,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:22:35,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:22:35,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:22:35,383 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-11-12 16:22:47,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:22:47,839 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-11-12 16:22:47,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:22:47,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2018-11-12 16:22:47,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:22:47,865 INFO L225 Difference]: With dead ends: 5673 [2018-11-12 16:22:47,865 INFO L226 Difference]: Without dead ends: 3698 [2018-11-12 16:22:47,872 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:22:47,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-11-12 16:22:47,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-11-12 16:22:47,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-11-12 16:22:47,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5870 transitions. [2018-11-12 16:22:47,991 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5870 transitions. Word has length 86 [2018-11-12 16:22:47,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:22:47,992 INFO L480 AbstractCegarLoop]: Abstraction has 3687 states and 5870 transitions. [2018-11-12 16:22:47,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:22:47,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5870 transitions. [2018-11-12 16:22:47,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-11-12 16:22:47,998 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:22:47,999 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:22:47,999 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:22:47,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:22:48,000 INFO L82 PathProgramCache]: Analyzing trace with hash 440259844, now seen corresponding path program 1 times [2018-11-12 16:22:48,000 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:22:48,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:22:48,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:22:48,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:22:48,003 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:22:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:22:48,201 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:22:48,202 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:22:48,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:22:48,202 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:22:48,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:22:48,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:22:48,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:22:48,204 INFO L87 Difference]: Start difference. First operand 3687 states and 5870 transitions. Second operand 5 states. [2018-11-12 16:22:56,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:22:56,928 INFO L93 Difference]: Finished difference Result 10958 states and 17870 transitions. [2018-11-12 16:22:56,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 16:22:56,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2018-11-12 16:22:56,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:22:56,977 INFO L225 Difference]: With dead ends: 10958 [2018-11-12 16:22:56,978 INFO L226 Difference]: Without dead ends: 7277 [2018-11-12 16:22:56,992 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:22:56,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7277 states. [2018-11-12 16:22:57,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7277 to 7170. [2018-11-12 16:22:57,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7170 states. [2018-11-12 16:22:57,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7170 states to 7170 states and 10523 transitions. [2018-11-12 16:22:57,188 INFO L78 Accepts]: Start accepts. Automaton has 7170 states and 10523 transitions. Word has length 88 [2018-11-12 16:22:57,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:22:57,189 INFO L480 AbstractCegarLoop]: Abstraction has 7170 states and 10523 transitions. [2018-11-12 16:22:57,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:22:57,189 INFO L276 IsEmpty]: Start isEmpty. Operand 7170 states and 10523 transitions. [2018-11-12 16:22:57,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-12 16:22:57,196 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:22:57,196 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:22:57,196 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:22:57,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:22:57,202 INFO L82 PathProgramCache]: Analyzing trace with hash -567644532, now seen corresponding path program 1 times [2018-11-12 16:22:57,202 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:22:57,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:22:57,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:22:57,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:22:57,203 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:22:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:22:57,436 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:22:57,437 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:22:57,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:22:57,437 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:22:57,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:22:57,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:22:57,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:22:57,439 INFO L87 Difference]: Start difference. First operand 7170 states and 10523 transitions. Second operand 4 states. [2018-11-12 16:23:06,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:23:06,560 INFO L93 Difference]: Finished difference Result 27637 states and 43195 transitions. [2018-11-12 16:23:06,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:23:06,563 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2018-11-12 16:23:06,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:23:06,652 INFO L225 Difference]: With dead ends: 27637 [2018-11-12 16:23:06,653 INFO L226 Difference]: Without dead ends: 20473 [2018-11-12 16:23:06,702 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:23:06,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20473 states. [2018-11-12 16:23:07,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20473 to 20436. [2018-11-12 16:23:07,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20436 states. [2018-11-12 16:23:07,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20436 states to 20436 states and 29065 transitions. [2018-11-12 16:23:07,249 INFO L78 Accepts]: Start accepts. Automaton has 20436 states and 29065 transitions. Word has length 132 [2018-11-12 16:23:07,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:23:07,250 INFO L480 AbstractCegarLoop]: Abstraction has 20436 states and 29065 transitions. [2018-11-12 16:23:07,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:23:07,250 INFO L276 IsEmpty]: Start isEmpty. Operand 20436 states and 29065 transitions. [2018-11-12 16:23:07,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-11-12 16:23:07,263 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:23:07,266 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:23:07,266 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:23:07,266 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:23:07,267 INFO L82 PathProgramCache]: Analyzing trace with hash -2019208682, now seen corresponding path program 1 times [2018-11-12 16:23:07,267 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:23:07,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:23:07,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:23:07,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:23:07,269 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:23:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:23:07,598 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:23:08,006 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:23:08,007 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:23:08,007 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:23:08,010 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 248 with the following transitions: [2018-11-12 16:23:08,022 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2655], [2657], [2660], [2668], [2676], [2684], [2692], [2700], [2708], [2716], [2724], [2732], [2740], [2748], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3308], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3361], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-12 16:23:08,097 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:23:08,098 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:23:08,989 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:23:08,997 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Performed 2834 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2834 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 26 variables. [2018-11-12 16:23:09,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:23:09,045 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:23:10,350 INFO L227 lantSequenceWeakener]: Weakened 223 states. On average, predicates are now at 70.89% of their original sizes. [2018-11-12 16:23:10,351 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:23:10,802 INFO L415 sIntCurrentIteration]: We unified 246 AI predicates to 246 [2018-11-12 16:23:10,802 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:23:10,803 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:23:10,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-12 16:23:10,804 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:23:10,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 16:23:10,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 16:23:10,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:23:10,805 INFO L87 Difference]: Start difference. First operand 20436 states and 29065 transitions. Second operand 11 states. [2018-11-12 16:23:25,794 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:24:49,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:24:49,195 INFO L93 Difference]: Finished difference Result 41675 states and 58989 transitions. [2018-11-12 16:24:49,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-12 16:24:49,195 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 247 [2018-11-12 16:24:49,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:24:49,278 INFO L225 Difference]: With dead ends: 41675 [2018-11-12 16:24:49,279 INFO L226 Difference]: Without dead ends: 21245 [2018-11-12 16:24:49,358 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 251 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-11-12 16:24:49,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21245 states. [2018-11-12 16:24:49,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21245 to 21240. [2018-11-12 16:24:49,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21240 states. [2018-11-12 16:24:49,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21240 states to 21240 states and 29880 transitions. [2018-11-12 16:24:49,839 INFO L78 Accepts]: Start accepts. Automaton has 21240 states and 29880 transitions. Word has length 247 [2018-11-12 16:24:49,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:24:49,840 INFO L480 AbstractCegarLoop]: Abstraction has 21240 states and 29880 transitions. [2018-11-12 16:24:49,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 16:24:49,840 INFO L276 IsEmpty]: Start isEmpty. Operand 21240 states and 29880 transitions. [2018-11-12 16:24:49,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-11-12 16:24:49,849 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:24:49,849 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-12 16:24:49,850 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:24:49,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:24:49,851 INFO L82 PathProgramCache]: Analyzing trace with hash -789102012, now seen corresponding path program 1 times [2018-11-12 16:24:49,852 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:24:49,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:24:49,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:24:49,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:24:49,853 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:24:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:24:50,451 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 108 proven. 77 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-11-12 16:24:50,452 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:24:50,452 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:24:50,452 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 295 with the following transitions: [2018-11-12 16:24:50,453 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2655], [2657], [2660], [2668], [2676], [2684], [2692], [2700], [2708], [2716], [2724], [2732], [2740], [2748], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3159], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3257], [3258], [3262], [3265], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-12 16:24:50,458 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:24:50,458 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:24:51,180 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:24:51,180 INFO L272 AbstractInterpreter]: Visited 110 different actions 320 times. Merged at 5 different actions 12 times. Never widened. Performed 6894 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6894 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 16:24:51,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:24:51,208 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:24:51,997 INFO L227 lantSequenceWeakener]: Weakened 91 states. On average, predicates are now at 71.13% of their original sizes. [2018-11-12 16:24:51,997 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:24:56,324 INFO L415 sIntCurrentIteration]: We unified 293 AI predicates to 293 [2018-11-12 16:24:56,324 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:24:56,325 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:24:56,325 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-12 16:24:56,325 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:24:56,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-12 16:24:56,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-12 16:24:56,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-11-12 16:24:56,326 INFO L87 Difference]: Start difference. First operand 21240 states and 29880 transitions. Second operand 19 states. [2018-11-12 16:25:08,036 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-12 16:25:22,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-12 16:25:22,961 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:25:22,967 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:25:22,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:25:22 BoogieIcfgContainer [2018-11-12 16:25:22,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:25:22,968 INFO L168 Benchmark]: Toolchain (without parser) took 198116.46 ms. Allocated memory was 1.5 GB in the beginning and 5.7 GB in the end (delta: 4.2 GB). Free memory was 1.4 GB in the beginning and 937.8 MB in the end (delta: 419.3 MB). Peak memory consumption was 4.6 GB. Max. memory is 7.1 GB. [2018-11-12 16:25:22,970 INFO L168 Benchmark]: CDTParser took 0.28 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 16:25:22,970 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2787.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-11-12 16:25:22,971 INFO L168 Benchmark]: Boogie Procedure Inliner took 407.52 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 759.7 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. [2018-11-12 16:25:22,972 INFO L168 Benchmark]: Boogie Preprocessor took 286.24 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 37.6 MB). Peak memory consumption was 37.6 MB. Max. memory is 7.1 GB. [2018-11-12 16:25:22,973 INFO L168 Benchmark]: RCFGBuilder took 11598.40 ms. Allocated memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: 183.0 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -8.5 MB). Peak memory consumption was 684.1 MB. Max. memory is 7.1 GB. [2018-11-12 16:25:22,974 INFO L168 Benchmark]: TraceAbstraction took 183031.88 ms. Allocated memory was 2.4 GB in the beginning and 5.7 GB in the end (delta: 3.2 GB). Free memory was 2.1 GB in the beginning and 937.8 MB in the end (delta: 1.2 GB). Peak memory consumption was 4.4 GB. Max. memory is 7.1 GB. [2018-11-12 16:25:22,980 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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 2787.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 407.52 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 759.7 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 286.24 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 37.6 MB). Peak memory consumption was 37.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11598.40 ms. Allocated memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: 183.0 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -8.5 MB). Peak memory consumption was 684.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 183031.88 ms. Allocated memory was 2.4 GB in the beginning and 5.7 GB in the end (delta: 3.2 GB). Free memory was 2.1 GB in the beginning and 937.8 MB in the end (delta: 1.2 GB). Peak memory consumption was 4.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 39]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 39). Cancelled while BasicCegarLoop was constructing difference of abstraction (21240states) and FLOYD_HOARE automaton (currently 16 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (6598 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 182.9s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 170.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3409 SDtfs, 15334 SDslu, 3336 SDs, 0 SdLazy, 29762 SolverSat, 5624 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 93.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 581 GetRequests, 473 SyntacticMatches, 53 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21240occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9974198669766143 AbsIntWeakeningRatio, 0.11688311688311688 AbsIntAvgWeakeningVarsNumRemoved, 6.482374768089054 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 1021 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 863 NumberOfCodeBlocks, 863 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 857 ConstructedInterpolants, 0 QuantifiedInterpolants, 538109 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 358/437 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown