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_label36_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:23:44,805 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:23:44,807 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:23:44,827 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:23:44,827 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:23:44,828 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:23:44,829 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:23:44,831 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:23:44,833 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:23:44,835 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:23:44,836 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:23:44,837 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:23:44,838 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:23:44,841 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:23:44,842 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:23:44,844 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:23:44,846 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:23:44,848 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:23:44,855 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:23:44,860 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:23:44,862 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:23:44,866 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:23:44,870 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:23:44,870 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:23:44,871 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:23:44,872 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:23:44,873 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:23:44,875 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:23:44,877 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:23:44,878 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:23:44,878 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:23:44,883 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:23:44,883 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:23:44,883 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:23:44,884 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:23:44,885 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:23:44,885 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 16:23:44,917 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:23:44,917 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:23:44,919 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:23:44,919 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:23:44,919 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:23:44,919 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:23:44,919 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:23:44,920 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:23:44,920 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:23:44,920 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:23:44,920 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:23:44,920 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:23:44,921 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:23:44,922 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:23:44,922 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:23:44,922 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:23:44,922 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:23:44,923 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:23:44,924 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:23:44,924 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:23:44,924 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:23:44,925 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:23:44,925 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:23:44,925 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:23:44,925 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:23:44,925 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:23:44,926 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:23:44,926 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:23:44,926 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:23:44,927 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:23:44,927 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:23:44,927 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:23:44,927 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:23:44,927 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:23:44,927 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:23:44,988 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:23:45,004 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:23:45,008 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:23:45,010 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:23:45,010 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:23:45,011 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label36_false-unreach-call.c [2018-11-12 16:23:45,080 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c71d3bf1f/6d8f9468599c43f281fe9cd843822efd/FLAGcfcb4a8c8 [2018-11-12 16:23:45,991 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:23:45,992 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label36_false-unreach-call.c [2018-11-12 16:23:46,026 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c71d3bf1f/6d8f9468599c43f281fe9cd843822efd/FLAGcfcb4a8c8 [2018-11-12 16:23:46,043 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c71d3bf1f/6d8f9468599c43f281fe9cd843822efd [2018-11-12 16:23:46,056 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:23:46,058 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:23:46,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:23:46,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:23:46,063 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:23:46,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:23:46" (1/1) ... [2018-11-12 16:23:46,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64e2cff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:46, skipping insertion in model container [2018-11-12 16:23:46,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:23:46" (1/1) ... [2018-11-12 16:23:46,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:23:46,262 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:23:47,778 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:23:47,784 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:23:48,573 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:23:48,613 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:23:48,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:48 WrapperNode [2018-11-12 16:23:48,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:23:48,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:23:48,615 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:23:48,616 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:23:48,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:48" (1/1) ... [2018-11-12 16:23:49,008 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:48" (1/1) ... [2018-11-12 16:23:49,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:23:49,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:23:49,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:23:49,025 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:23:49,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:48" (1/1) ... [2018-11-12 16:23:49,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:48" (1/1) ... [2018-11-12 16:23:49,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:48" (1/1) ... [2018-11-12 16:23:49,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:48" (1/1) ... [2018-11-12 16:23:49,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:48" (1/1) ... [2018-11-12 16:23:49,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:48" (1/1) ... [2018-11-12 16:23:49,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:48" (1/1) ... [2018-11-12 16:23:49,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:23:49,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:23:49,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:23:49,370 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:23:49,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:48" (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 16:23:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:23:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:23:49,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:23:49,439 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-12 16:23:49,439 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-12 16:23:49,439 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 16:23:49,439 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 16:23:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:23:49,440 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:23:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:23:49,440 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:23:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:23:49,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:23:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:23:49,442 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:24:01,349 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:24:01,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:24:01 BoogieIcfgContainer [2018-11-12 16:24:01,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:24:01,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:24:01,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:24:01,354 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:24:01,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:23:46" (1/3) ... [2018-11-12 16:24:01,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c07a26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:24:01, skipping insertion in model container [2018-11-12 16:24:01,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:48" (2/3) ... [2018-11-12 16:24:01,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c07a26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:24:01, skipping insertion in model container [2018-11-12 16:24:01,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:24:01" (3/3) ... [2018-11-12 16:24:01,358 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label36_false-unreach-call.c [2018-11-12 16:24:01,368 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:24:01,378 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:24:01,394 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:24:01,441 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:24:01,441 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:24:01,441 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:24:01,441 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:24:01,442 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:24:01,442 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:24:01,442 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:24:01,442 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:24:01,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-12 16:24:01,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-12 16:24:01,501 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:24:01,502 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:24:01,505 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:24:01,511 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:24:01,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1333947308, now seen corresponding path program 1 times [2018-11-12 16:24:01,514 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:24:01,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:24:01,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:24:01,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:24:01,571 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:24:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:24:01,870 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:24:01,974 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 16:24:01,977 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:24:01,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:24:01,977 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:24:01,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:24:02,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:24:02,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:24:02,005 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-12 16:24:11,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:24:11,376 INFO L93 Difference]: Finished difference Result 3087 states and 5699 transitions. [2018-11-12 16:24:11,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:24:11,378 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-11-12 16:24:11,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:24:11,415 INFO L225 Difference]: With dead ends: 3087 [2018-11-12 16:24:11,415 INFO L226 Difference]: Without dead ends: 1965 [2018-11-12 16:24:11,426 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:24:11,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2018-11-12 16:24:11,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1959. [2018-11-12 16:24:11,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-11-12 16:24:11,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3512 transitions. [2018-11-12 16:24:11,601 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3512 transitions. Word has length 18 [2018-11-12 16:24:11,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:24:11,602 INFO L480 AbstractCegarLoop]: Abstraction has 1959 states and 3512 transitions. [2018-11-12 16:24:11,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:24:11,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3512 transitions. [2018-11-12 16:24:11,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-11-12 16:24:11,607 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:24:11,608 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:24:11,608 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:24:11,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:24:11,609 INFO L82 PathProgramCache]: Analyzing trace with hash -981365754, now seen corresponding path program 1 times [2018-11-12 16:24:11,609 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:24:11,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:24:11,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:24:11,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:24:11,611 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:24:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:24:12,356 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:24:12,356 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:24:12,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:24:12,357 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:24:12,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:24:12,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:24:12,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:24:12,360 INFO L87 Difference]: Start difference. First operand 1959 states and 3512 transitions. Second operand 6 states. [2018-11-12 16:24:23,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:24:23,954 INFO L93 Difference]: Finished difference Result 5634 states and 10287 transitions. [2018-11-12 16:24:23,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:24:23,957 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2018-11-12 16:24:23,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:24:23,990 INFO L225 Difference]: With dead ends: 5634 [2018-11-12 16:24:23,991 INFO L226 Difference]: Without dead ends: 3681 [2018-11-12 16:24:23,998 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:24:24,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2018-11-12 16:24:24,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 3650. [2018-11-12 16:24:24,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3650 states. [2018-11-12 16:24:24,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 5957 transitions. [2018-11-12 16:24:24,132 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 5957 transitions. Word has length 95 [2018-11-12 16:24:24,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:24:24,134 INFO L480 AbstractCegarLoop]: Abstraction has 3650 states and 5957 transitions. [2018-11-12 16:24:24,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:24:24,134 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 5957 transitions. [2018-11-12 16:24:24,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-12 16:24:24,142 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:24:24,144 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:24:24,145 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:24:24,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:24:24,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1372383228, now seen corresponding path program 1 times [2018-11-12 16:24:24,147 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:24:24,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:24:24,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:24:24,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:24:24,149 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:24:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:24:24,468 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:24:24,468 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:24:24,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:24:24,469 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:24:24,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:24:24,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:24:24,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:24:24,470 INFO L87 Difference]: Start difference. First operand 3650 states and 5957 transitions. Second operand 6 states. [2018-11-12 16:24:34,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:24:34,417 INFO L93 Difference]: Finished difference Result 12385 states and 20601 transitions. [2018-11-12 16:24:34,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:24:34,421 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2018-11-12 16:24:34,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:24:34,470 INFO L225 Difference]: With dead ends: 12385 [2018-11-12 16:24:34,471 INFO L226 Difference]: Without dead ends: 8741 [2018-11-12 16:24:34,493 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:24:34,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8741 states. [2018-11-12 16:24:34,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8741 to 8684. [2018-11-12 16:24:34,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8684 states. [2018-11-12 16:24:34,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8684 states to 8684 states and 12864 transitions. [2018-11-12 16:24:34,759 INFO L78 Accepts]: Start accepts. Automaton has 8684 states and 12864 transitions. Word has length 114 [2018-11-12 16:24:34,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:24:34,760 INFO L480 AbstractCegarLoop]: Abstraction has 8684 states and 12864 transitions. [2018-11-12 16:24:34,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:24:34,760 INFO L276 IsEmpty]: Start isEmpty. Operand 8684 states and 12864 transitions. [2018-11-12 16:24:34,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-11-12 16:24:34,773 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:24:34,773 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:24:34,774 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:24:34,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:24:34,774 INFO L82 PathProgramCache]: Analyzing trace with hash 858026980, now seen corresponding path program 1 times [2018-11-12 16:24:34,774 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:24:34,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:24:34,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:24:34,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:24:34,775 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:24:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:24:35,075 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:24:35,181 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:24:35,181 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:24:35,181 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:24:35,182 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:24:35,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:24:35,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:24:35,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:24:35,183 INFO L87 Difference]: Start difference. First operand 8684 states and 12864 transitions. Second operand 6 states. [2018-11-12 16:24:45,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:24:45,449 INFO L93 Difference]: Finished difference Result 22909 states and 34919 transitions. [2018-11-12 16:24:45,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:24:45,454 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-11-12 16:24:45,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:24:45,537 INFO L225 Difference]: With dead ends: 22909 [2018-11-12 16:24:45,538 INFO L226 Difference]: Without dead ends: 14231 [2018-11-12 16:24:45,581 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:24:45,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14231 states. [2018-11-12 16:24:45,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14231 to 14057. [2018-11-12 16:24:45,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14057 states. [2018-11-12 16:24:45,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14057 states to 14057 states and 19960 transitions. [2018-11-12 16:24:45,932 INFO L78 Accepts]: Start accepts. Automaton has 14057 states and 19960 transitions. Word has length 126 [2018-11-12 16:24:45,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:24:45,933 INFO L480 AbstractCegarLoop]: Abstraction has 14057 states and 19960 transitions. [2018-11-12 16:24:45,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:24:45,933 INFO L276 IsEmpty]: Start isEmpty. Operand 14057 states and 19960 transitions. [2018-11-12 16:24:45,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-11-12 16:24:45,938 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:24:45,938 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 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 16:24:45,938 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:24:45,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:24:45,939 INFO L82 PathProgramCache]: Analyzing trace with hash -476586204, now seen corresponding path program 1 times [2018-11-12 16:24:45,939 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:24:45,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:24:45,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:24:45,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:24:45,940 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:24:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:24:46,237 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 16:24:46,237 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:24:46,237 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:24:46,238 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 182 with the following transitions: [2018-11-12 16:24:46,241 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2671], [2673], [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], [3128], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3225], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-12 16:24:46,304 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:24:46,304 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:24:47,406 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:24:47,408 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Performed 1984 root evaluator evaluations with a maximum evaluation depth of 6. Performed 1984 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 26 variables. [2018-11-12 16:24:47,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:24:47,452 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:24:48,256 INFO L227 lantSequenceWeakener]: Weakened 159 states. On average, predicates are now at 70.97% of their original sizes. [2018-11-12 16:24:48,256 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:24:48,636 INFO L415 sIntCurrentIteration]: We unified 180 AI predicates to 180 [2018-11-12 16:24:48,636 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:24:48,637 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:24:48,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2018-11-12 16:24:48,637 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:24:48,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 16:24:48,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 16:24:48,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-12 16:24:48,639 INFO L87 Difference]: Start difference. First operand 14057 states and 19960 transitions. Second operand 10 states. [2018-11-12 16:25:00,324 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:25:48,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:25:48,469 INFO L93 Difference]: Finished difference Result 28917 states and 40934 transitions. [2018-11-12 16:25:48,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 16:25:48,470 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 181 [2018-11-12 16:25:48,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:25:48,513 INFO L225 Difference]: With dead ends: 28917 [2018-11-12 16:25:48,513 INFO L226 Difference]: Without dead ends: 14866 [2018-11-12 16:25:48,543 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 184 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-12 16:25:48,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14866 states. [2018-11-12 16:25:48,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14866 to 14861. [2018-11-12 16:25:48,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14861 states. [2018-11-12 16:25:48,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14861 states to 14861 states and 20774 transitions. [2018-11-12 16:25:48,835 INFO L78 Accepts]: Start accepts. Automaton has 14861 states and 20774 transitions. Word has length 181 [2018-11-12 16:25:48,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:25:48,835 INFO L480 AbstractCegarLoop]: Abstraction has 14861 states and 20774 transitions. [2018-11-12 16:25:48,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 16:25:48,836 INFO L276 IsEmpty]: Start isEmpty. Operand 14861 states and 20774 transitions. [2018-11-12 16:25:48,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-11-12 16:25:48,840 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:25:48,841 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:25:48,841 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:25:48,841 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:25:48,842 INFO L82 PathProgramCache]: Analyzing trace with hash 289946297, now seen corresponding path program 1 times [2018-11-12 16:25:48,842 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:25:48,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:25:48,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:25:48,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:25:48,843 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:25:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:25:49,228 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:25:49,506 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 17 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:25:49,506 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:25:49,506 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:25:49,507 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 245 with the following transitions: [2018-11-12 16:25:49,507 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2671], [2673], [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], [3245], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3409], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-12 16:25:49,514 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:25:49,514 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:25:50,376 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:25:50,376 INFO L272 AbstractInterpreter]: Visited 138 different actions 401 times. Merged at 5 different actions 9 times. Never widened. Performed 7330 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7330 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 16:25:50,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:25:50,418 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:26:02,602 INFO L227 lantSequenceWeakener]: Weakened 98 states. On average, predicates are now at 71.06% of their original sizes. [2018-11-12 16:26:02,603 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:26:05,459 INFO L415 sIntCurrentIteration]: We unified 243 AI predicates to 243 [2018-11-12 16:26:05,460 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:26:05,460 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:26:05,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [8] total 22 [2018-11-12 16:26:05,461 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:26:05,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 16:26:05,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 16:26:05,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2018-11-12 16:26:05,463 INFO L87 Difference]: Start difference. First operand 14861 states and 20774 transitions. Second operand 16 states. [2018-11-12 16:26:12,575 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-12 16:27:11,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-12 16:27:11,807 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:27:11,813 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:27:11,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:27:11 BoogieIcfgContainer [2018-11-12 16:27:11,814 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:27:11,815 INFO L168 Benchmark]: Toolchain (without parser) took 205758.33 ms. Allocated memory was 1.5 GB in the beginning and 6.0 GB in the end (delta: 4.4 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -959.4 MB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-11-12 16:27:11,816 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:27:11,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2555.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-11-12 16:27:11,818 INFO L168 Benchmark]: Boogie Procedure Inliner took 409.58 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 825.8 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.5 MB. Max. memory is 7.1 GB. [2018-11-12 16:27:11,819 INFO L168 Benchmark]: Boogie Preprocessor took 343.97 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. [2018-11-12 16:27:11,820 INFO L168 Benchmark]: RCFGBuilder took 11981.01 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 149.9 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 43.9 MB). Peak memory consumption was 658.6 MB. Max. memory is 7.1 GB. [2018-11-12 16:27:11,821 INFO L168 Benchmark]: TraceAbstraction took 190462.99 ms. Allocated memory was 2.5 GB in the beginning and 6.0 GB in the end (delta: 3.4 GB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -168.2 MB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2018-11-12 16:27:11,826 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2555.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 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 409.58 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 825.8 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 343.97 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11981.01 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 149.9 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 43.9 MB). Peak memory consumption was 658.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 190462.99 ms. Allocated memory was 2.5 GB in the beginning and 6.0 GB in the end (delta: 3.4 GB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -168.2 MB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 45]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 45). Cancelled while BasicCegarLoop was constructing difference of abstraction (14861states) and FLOYD_HOARE automaton (currently 19 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (19656 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 190.3s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 167.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3972 SDtfs, 20324 SDslu, 2713 SDs, 0 SdLazy, 31369 SolverSat, 6834 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 87.9s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 469 GetRequests, 334 SyntacticMatches, 81 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14861occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9971883808794076 AbsIntWeakeningRatio, 0.1276595744680851 AbsIntAvgWeakeningVarsNumRemoved, 10.539007092198581 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 273 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 778 NumberOfCodeBlocks, 778 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 772 ConstructedInterpolants, 0 QuantifiedInterpolants, 562190 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 77/245 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown