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/Problem18_label32_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:56:11,799 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:56:11,802 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:56:11,814 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:56:11,815 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:56:11,816 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:56:11,817 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:56:11,819 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:56:11,821 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:56:11,822 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:56:11,823 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:56:11,823 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:56:11,824 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:56:11,825 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:56:11,826 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:56:11,827 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:56:11,828 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:56:11,830 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:56:11,832 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:56:11,833 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:56:11,834 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:56:11,836 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:56:11,840 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:56:11,841 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:56:11,841 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:56:11,842 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:56:11,846 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:56:11,847 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:56:11,850 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:56:11,853 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:56:11,853 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:56:11,854 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:56:11,854 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:56:11,854 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:56:11,855 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:56:11,856 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:56:11,856 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 16:56:11,877 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:56:11,877 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:56:11,878 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:56:11,878 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:56:11,879 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:56:11,879 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:56:11,879 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:56:11,879 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:56:11,880 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:56:11,880 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:56:11,880 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:56:11,880 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:56:11,880 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:56:11,881 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:56:11,882 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:56:11,882 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:56:11,882 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:56:11,882 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:56:11,882 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:56:11,883 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:56:11,883 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:56:11,883 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:56:11,883 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:56:11,883 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:56:11,884 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:56:11,884 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:56:11,884 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:56:11,884 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:56:11,884 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:56:11,885 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:56:11,885 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:56:11,885 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:56:11,885 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:56:11,886 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:56:11,886 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:56:11,940 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:56:11,958 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:56:11,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:56:11,965 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:56:11,965 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:56:11,966 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label32_false-unreach-call.c [2018-11-12 16:56:12,029 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3566d2ce/d7741ac73d30410bad5519c46f1ef696/FLAG3b302d2aa [2018-11-12 16:56:12,746 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:56:12,747 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label32_false-unreach-call.c [2018-11-12 16:56:12,774 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3566d2ce/d7741ac73d30410bad5519c46f1ef696/FLAG3b302d2aa [2018-11-12 16:56:12,795 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3566d2ce/d7741ac73d30410bad5519c46f1ef696 [2018-11-12 16:56:12,809 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:56:12,811 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:56:12,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:56:12,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:56:12,821 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:56:12,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:56:12" (1/1) ... [2018-11-12 16:56:12,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@629af1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:12, skipping insertion in model container [2018-11-12 16:56:12,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:56:12" (1/1) ... [2018-11-12 16:56:12,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:56:13,001 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:56:14,245 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:56:14,250 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:56:14,745 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:56:14,780 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:56:14,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:14 WrapperNode [2018-11-12 16:56:14,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:56:14,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:56:14,782 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:56:14,782 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:56:14,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:14" (1/1) ... [2018-11-12 16:56:15,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:14" (1/1) ... [2018-11-12 16:56:15,083 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:56:15,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:56:15,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:56:15,084 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:56:15,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:14" (1/1) ... [2018-11-12 16:56:15,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:14" (1/1) ... [2018-11-12 16:56:15,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:14" (1/1) ... [2018-11-12 16:56:15,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:14" (1/1) ... [2018-11-12 16:56:15,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:14" (1/1) ... [2018-11-12 16:56:15,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:14" (1/1) ... [2018-11-12 16:56:15,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:14" (1/1) ... [2018-11-12 16:56:15,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:56:15,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:56:15,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:56:15,290 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:56:15,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:14" (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 16:56:15,366 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:56:15,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:56:15,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:56:15,367 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 16:56:15,367 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 16:56:15,367 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:56:15,367 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:56:15,368 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:56:15,368 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:56:15,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:56:15,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:56:15,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:56:15,369 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:56:23,427 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:56:23,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:56:23 BoogieIcfgContainer [2018-11-12 16:56:23,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:56:23,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:56:23,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:56:23,433 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:56:23,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:56:12" (1/3) ... [2018-11-12 16:56:23,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429f4923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:56:23, skipping insertion in model container [2018-11-12 16:56:23,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:14" (2/3) ... [2018-11-12 16:56:23,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429f4923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:56:23, skipping insertion in model container [2018-11-12 16:56:23,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:56:23" (3/3) ... [2018-11-12 16:56:23,437 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label32_false-unreach-call.c [2018-11-12 16:56:23,447 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:56:23,457 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:56:23,472 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:56:23,523 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:56:23,523 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:56:23,523 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:56:23,523 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:56:23,524 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:56:23,524 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:56:23,524 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:56:23,524 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:56:23,564 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-12 16:56:23,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-12 16:56:23,573 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:56:23,574 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:56:23,577 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:56:23,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:56:23,583 INFO L82 PathProgramCache]: Analyzing trace with hash 101838135, now seen corresponding path program 1 times [2018-11-12 16:56:23,586 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:56:23,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:23,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:56:23,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:23,647 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:56:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:56:24,108 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-12 16:56:24,125 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 16:56:24,127 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:56:24,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:56:24,128 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:56:24,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:56:24,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:56:24,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:56:24,156 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-11-12 16:56:35,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:56:35,968 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-11-12 16:56:35,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:56:35,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-11-12 16:56:35,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:56:36,006 INFO L225 Difference]: With dead ends: 2974 [2018-11-12 16:56:36,006 INFO L226 Difference]: Without dead ends: 2193 [2018-11-12 16:56:36,018 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:56:36,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-11-12 16:56:36,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2018-11-12 16:56:36,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2193 states. [2018-11-12 16:56:36,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3506 transitions. [2018-11-12 16:56:36,213 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3506 transitions. Word has length 35 [2018-11-12 16:56:36,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:56:36,214 INFO L480 AbstractCegarLoop]: Abstraction has 2193 states and 3506 transitions. [2018-11-12 16:56:36,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:56:36,214 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3506 transitions. [2018-11-12 16:56:36,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-11-12 16:56:36,223 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:56:36,225 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:56:36,225 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:56:36,225 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:56:36,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1911070856, now seen corresponding path program 1 times [2018-11-12 16:56:36,226 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:56:36,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:36,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:56:36,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:36,228 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:56:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:56:36,556 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:56:36,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:56:36,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:56:36,557 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:56:36,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:56:36,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:56:36,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:56:36,560 INFO L87 Difference]: Start difference. First operand 2193 states and 3506 transitions. Second operand 5 states. [2018-11-12 16:56:45,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:56:45,143 INFO L93 Difference]: Finished difference Result 6600 states and 10738 transitions. [2018-11-12 16:56:45,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:56:45,144 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2018-11-12 16:56:45,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:56:45,182 INFO L225 Difference]: With dead ends: 6600 [2018-11-12 16:56:45,182 INFO L226 Difference]: Without dead ends: 4413 [2018-11-12 16:56:45,190 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 16:56:45,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2018-11-12 16:56:45,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4378. [2018-11-12 16:56:45,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4378 states. [2018-11-12 16:56:45,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6712 transitions. [2018-11-12 16:56:45,349 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6712 transitions. Word has length 105 [2018-11-12 16:56:45,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:56:45,350 INFO L480 AbstractCegarLoop]: Abstraction has 4378 states and 6712 transitions. [2018-11-12 16:56:45,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:56:45,350 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6712 transitions. [2018-11-12 16:56:45,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-12 16:56:45,362 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:56:45,363 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:56:45,363 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:56:45,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:56:45,363 INFO L82 PathProgramCache]: Analyzing trace with hash 769572929, now seen corresponding path program 1 times [2018-11-12 16:56:45,366 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:56:45,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:45,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:56:45,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:45,367 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:56:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:56:45,741 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:56:45,896 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:56:45,896 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:56:45,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:56:45,896 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:56:45,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:56:45,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:56:45,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:56:45,898 INFO L87 Difference]: Start difference. First operand 4378 states and 6712 transitions. Second operand 6 states. [2018-11-12 16:56:51,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:56:51,173 INFO L93 Difference]: Finished difference Result 11002 states and 16943 transitions. [2018-11-12 16:56:51,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:56:51,174 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-11-12 16:56:51,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:56:51,213 INFO L225 Difference]: With dead ends: 11002 [2018-11-12 16:56:51,214 INFO L226 Difference]: Without dead ends: 6630 [2018-11-12 16:56:51,229 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 16:56:51,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6630 states. [2018-11-12 16:56:51,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 6590. [2018-11-12 16:56:51,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-11-12 16:56:51,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 8773 transitions. [2018-11-12 16:56:51,399 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 8773 transitions. Word has length 132 [2018-11-12 16:56:51,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:56:51,400 INFO L480 AbstractCegarLoop]: Abstraction has 6590 states and 8773 transitions. [2018-11-12 16:56:51,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:56:51,400 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 8773 transitions. [2018-11-12 16:56:51,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-11-12 16:56:51,402 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:56:51,402 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:56:51,403 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:56:51,403 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:56:51,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1248929717, now seen corresponding path program 1 times [2018-11-12 16:56:51,403 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:56:51,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:51,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:56:51,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:51,405 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:56:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:56:51,661 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:56:51,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:56:51,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:56:51,662 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:56:51,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:56:51,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:56:51,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:56:51,664 INFO L87 Difference]: Start difference. First operand 6590 states and 8773 transitions. Second operand 4 states. [2018-11-12 16:56:58,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:56:58,471 INFO L93 Difference]: Finished difference Result 25999 states and 35669 transitions. [2018-11-12 16:56:58,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:56:58,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2018-11-12 16:56:58,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:56:58,560 INFO L225 Difference]: With dead ends: 25999 [2018-11-12 16:56:58,561 INFO L226 Difference]: Without dead ends: 19415 [2018-11-12 16:56:58,603 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 16:56:58,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19415 states. [2018-11-12 16:56:58,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19415 to 19415. [2018-11-12 16:56:58,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19415 states. [2018-11-12 16:56:59,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19415 states to 19415 states and 24673 transitions. [2018-11-12 16:56:59,036 INFO L78 Accepts]: Start accepts. Automaton has 19415 states and 24673 transitions. Word has length 142 [2018-11-12 16:56:59,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:56:59,037 INFO L480 AbstractCegarLoop]: Abstraction has 19415 states and 24673 transitions. [2018-11-12 16:56:59,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:56:59,037 INFO L276 IsEmpty]: Start isEmpty. Operand 19415 states and 24673 transitions. [2018-11-12 16:56:59,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-11-12 16:56:59,048 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:56:59,048 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:56:59,049 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:56:59,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:56:59,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1598854693, now seen corresponding path program 1 times [2018-11-12 16:56:59,049 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:56:59,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:59,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:56:59,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:59,051 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:56:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:56:59,595 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-12 16:56:59,851 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-12 16:57:00,945 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:57:00,946 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:57:00,946 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:57:00,947 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 358 with the following transitions: [2018-11-12 16:57:00,950 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1803], [1805], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2228], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2732], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-12 16:57:01,020 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:57:01,020 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:57:02,059 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:57:02,062 INFO L272 AbstractInterpreter]: Visited 229 different actions 229 times. Never merged. Never widened. Performed 2323 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2323 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 16:57:02,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:57:02,109 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:57:03,033 INFO L227 lantSequenceWeakener]: Weakened 348 states. On average, predicates are now at 77.49% of their original sizes. [2018-11-12 16:57:03,033 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:57:03,515 INFO L415 sIntCurrentIteration]: We unified 356 AI predicates to 356 [2018-11-12 16:57:03,515 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:57:03,516 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:57:03,517 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2018-11-12 16:57:03,517 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:57:03,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-12 16:57:03,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-12 16:57:03,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:57:03,518 INFO L87 Difference]: Start difference. First operand 19415 states and 24673 transitions. Second operand 8 states. [2018-11-12 16:57:13,024 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:57:39,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:57:39,000 INFO L93 Difference]: Finished difference Result 39529 states and 50077 transitions. [2018-11-12 16:57:39,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 16:57:39,001 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 357 [2018-11-12 16:57:39,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:57:39,072 INFO L225 Difference]: With dead ends: 39529 [2018-11-12 16:57:39,073 INFO L226 Difference]: Without dead ends: 20120 [2018-11-12 16:57:39,125 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 358 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 16:57:39,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20120 states. [2018-11-12 16:57:39,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20120 to 20118. [2018-11-12 16:57:39,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20118 states. [2018-11-12 16:57:39,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20118 states to 20118 states and 25388 transitions. [2018-11-12 16:57:39,511 INFO L78 Accepts]: Start accepts. Automaton has 20118 states and 25388 transitions. Word has length 357 [2018-11-12 16:57:39,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:57:39,511 INFO L480 AbstractCegarLoop]: Abstraction has 20118 states and 25388 transitions. [2018-11-12 16:57:39,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-12 16:57:39,513 INFO L276 IsEmpty]: Start isEmpty. Operand 20118 states and 25388 transitions. [2018-11-12 16:57:39,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2018-11-12 16:57:39,527 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:57:39,528 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:57:39,528 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:57:39,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:57:39,529 INFO L82 PathProgramCache]: Analyzing trace with hash -772566022, now seen corresponding path program 1 times [2018-11-12 16:57:39,529 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:57:39,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:57:39,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:57:39,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:57:39,532 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:57:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:57:40,118 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 16:57:40,320 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 16:57:40,537 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 16:57:40,948 WARN L179 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-12 16:57:41,492 WARN L179 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-11-12 16:57:42,615 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 110 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:57:42,616 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:57:42,616 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:57:42,616 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 447 with the following transitions: [2018-11-12 16:57:42,617 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1803], [1805], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2732], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-12 16:57:42,626 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:57:42,626 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:57:43,773 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:57:43,773 INFO L272 AbstractInterpreter]: Visited 232 different actions 460 times. Merged at 5 different actions 7 times. Never widened. Performed 9093 root evaluator evaluations with a maximum evaluation depth of 6. Performed 9093 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:57:43,814 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:57:43,815 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:57:45,231 INFO L227 lantSequenceWeakener]: Weakened 177 states. On average, predicates are now at 77.5% of their original sizes. [2018-11-12 16:57:45,232 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:57:46,442 INFO L415 sIntCurrentIteration]: We unified 445 AI predicates to 445 [2018-11-12 16:57:46,442 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:57:46,443 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:57:46,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [11] total 26 [2018-11-12 16:57:46,443 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:57:46,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 16:57:46,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 16:57:46,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2018-11-12 16:57:46,444 INFO L87 Difference]: Start difference. First operand 20118 states and 25388 transitions. Second operand 17 states. [2018-11-12 16:58:23,736 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:58:55,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:58:55,906 INFO L93 Difference]: Finished difference Result 42719 states and 53506 transitions. [2018-11-12 16:58:55,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-12 16:58:55,906 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 446 [2018-11-12 16:58:55,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:58:55,976 INFO L225 Difference]: With dead ends: 42719 [2018-11-12 16:58:55,976 INFO L226 Difference]: Without dead ends: 23310 [2018-11-12 16:58:56,034 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 457 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=173, Invalid=639, Unknown=0, NotChecked=0, Total=812 [2018-11-12 16:58:56,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23310 states. [2018-11-12 16:58:56,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23310 to 23304. [2018-11-12 16:58:56,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23304 states. [2018-11-12 16:58:56,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23304 states to 23304 states and 28632 transitions. [2018-11-12 16:58:56,641 INFO L78 Accepts]: Start accepts. Automaton has 23304 states and 28632 transitions. Word has length 446 [2018-11-12 16:58:56,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:58:56,642 INFO L480 AbstractCegarLoop]: Abstraction has 23304 states and 28632 transitions. [2018-11-12 16:58:56,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 16:58:56,642 INFO L276 IsEmpty]: Start isEmpty. Operand 23304 states and 28632 transitions. [2018-11-12 16:58:56,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2018-11-12 16:58:56,685 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:58:56,686 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:58:56,687 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:58:56,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:58:56,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1691543356, now seen corresponding path program 1 times [2018-11-12 16:58:56,688 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:58:56,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:58:56,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:58:56,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:58:56,690 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:58:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:58:57,695 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2018-11-12 16:58:57,696 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:58:57,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:58:57,696 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:58:57,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:58:57,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:58:57,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:58:57,698 INFO L87 Difference]: Start difference. First operand 23304 states and 28632 transitions. Second operand 4 states. [2018-11-12 16:59:14,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:59:14,135 INFO L93 Difference]: Finished difference Result 75350 states and 98335 transitions. [2018-11-12 16:59:14,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:59:14,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 885 [2018-11-12 16:59:14,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:59:14,343 INFO L225 Difference]: With dead ends: 75350 [2018-11-12 16:59:14,343 INFO L226 Difference]: Without dead ends: 55941 [2018-11-12 16:59:14,414 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 16:59:14,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55941 states. [2018-11-12 16:59:15,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55941 to 54533. [2018-11-12 16:59:15,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54533 states. [2018-11-12 16:59:15,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54533 states to 54533 states and 68135 transitions. [2018-11-12 16:59:15,350 INFO L78 Accepts]: Start accepts. Automaton has 54533 states and 68135 transitions. Word has length 885 [2018-11-12 16:59:15,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:59:15,352 INFO L480 AbstractCegarLoop]: Abstraction has 54533 states and 68135 transitions. [2018-11-12 16:59:15,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:59:15,352 INFO L276 IsEmpty]: Start isEmpty. Operand 54533 states and 68135 transitions. [2018-11-12 16:59:15,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1093 [2018-11-12 16:59:15,499 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:59:15,500 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:59:15,501 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:59:15,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:59:15,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1736648965, now seen corresponding path program 1 times [2018-11-12 16:59:15,501 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:59:15,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:59:15,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:59:15,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:59:15,504 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:59:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:59:16,282 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:59:18,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 376 proven. 629 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2018-11-12 16:59:18,743 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:59:18,744 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:59:18,744 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1093 with the following transitions: [2018-11-12 16:59:18,745 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1803], [1805], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2272], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2388], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2472], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-12 16:59:18,761 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:59:18,761 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:59:20,259 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:59:20,259 INFO L272 AbstractInterpreter]: Visited 539 different actions 1072 times. Merged at 5 different actions 5 times. Never widened. Performed 14965 root evaluator evaluations with a maximum evaluation depth of 6. Performed 14965 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:59:20,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:59:20,297 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:59:22,106 INFO L227 lantSequenceWeakener]: Weakened 783 states. On average, predicates are now at 77.48% of their original sizes. [2018-11-12 16:59:22,106 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:59:25,095 INFO L415 sIntCurrentIteration]: We unified 1091 AI predicates to 1091 [2018-11-12 16:59:25,096 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:59:25,096 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:59:25,096 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [30] imperfect sequences [11] total 39 [2018-11-12 16:59:25,096 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:59:25,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-11-12 16:59:25,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-11-12 16:59:25,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2018-11-12 16:59:25,099 INFO L87 Difference]: Start difference. First operand 54533 states and 68135 transitions. Second operand 30 states. Received shutdown request... [2018-11-12 16:59:35,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 16:59:35,032 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:59:35,038 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:59:35,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:59:35 BoogieIcfgContainer [2018-11-12 16:59:35,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:59:35,040 INFO L168 Benchmark]: Toolchain (without parser) took 202230.05 ms. Allocated memory was 1.5 GB in the beginning and 5.6 GB in the end (delta: 4.1 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.0 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-11-12 16:59:35,041 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:59:35,042 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1966.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-12 16:59:35,043 INFO L168 Benchmark]: Boogie Procedure Inliner took 301.74 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 773.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -971.5 MB). Peak memory consumption was 42.1 MB. Max. memory is 7.1 GB. [2018-11-12 16:59:35,043 INFO L168 Benchmark]: Boogie Preprocessor took 205.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-11-12 16:59:35,044 INFO L168 Benchmark]: RCFGBuilder took 8139.42 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 488.0 MB). Peak memory consumption was 488.0 MB. Max. memory is 7.1 GB. [2018-11-12 16:59:35,045 INFO L168 Benchmark]: TraceAbstraction took 191609.63 ms. Allocated memory was 2.3 GB in the beginning and 5.6 GB in the end (delta: 3.3 GB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -724.4 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-11-12 16:59:35,050 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1966.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 301.74 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 773.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -971.5 MB). Peak memory consumption was 42.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 205.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8139.42 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 488.0 MB). Peak memory consumption was 488.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 191609.63 ms. Allocated memory was 2.3 GB in the beginning and 5.6 GB in the end (delta: 3.3 GB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -724.4 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 93). Cancelled while BasicCegarLoop was constructing difference of abstraction (54533states) and FLOYD_HOARE automaton (currently 10 states, 30 states before enhancement),while ReachableStatesComputation was computing reachable states (247 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 191.5s OverallTime, 8 OverallIterations, 6 TraceHistogramMax, 164.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2813 SDtfs, 17964 SDslu, 1265 SDs, 0 SdLazy, 37100 SolverSat, 7105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 78.3s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1947 GetRequests, 1777 SyntacticMatches, 82 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54533occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.9s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9983104239113532 AbsIntWeakeningRatio, 0.05496828752642706 AbsIntAvgWeakeningVarsNumRemoved, 14.133720930232558 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 1491 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 3194 NumberOfCodeBlocks, 3194 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 3186 ConstructedInterpolants, 0 QuantifiedInterpolants, 8396195 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 1601/2365 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown