java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:25:43,647 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:25:43,649 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:25:43,661 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:25:43,661 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:25:43,662 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:25:43,664 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:25:43,665 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:25:43,667 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:25:43,668 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:25:43,669 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:25:43,669 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:25:43,670 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:25:43,671 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:25:43,672 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:25:43,673 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:25:43,674 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:25:43,675 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:25:43,677 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:25:43,679 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:25:43,680 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:25:43,681 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:25:43,684 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:25:43,684 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:25:43,684 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:25:43,685 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:25:43,686 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:25:43,687 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:25:43,688 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:25:43,689 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:25:43,689 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:25:43,690 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:25:43,690 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:25:43,690 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:25:43,695 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:25:43,696 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:25:43,697 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 19:25:43,718 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:25:43,718 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:25:43,719 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:25:43,720 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:25:43,720 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:25:43,720 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:25:43,720 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:25:43,720 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:25:43,721 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:25:43,721 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:25:43,721 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:25:43,721 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:25:43,721 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:25:43,722 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:25:43,722 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:25:43,722 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:25:43,723 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:25:43,723 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:25:43,723 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:25:43,723 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:25:43,723 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:25:43,724 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:25:43,724 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:25:43,724 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:25:43,724 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:25:43,724 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:25:43,725 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:25:43,725 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:25:43,725 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:25:43,725 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:25:43,725 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:25:43,725 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:25:43,726 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:25:43,726 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:25:43,726 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:25:43,776 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:25:43,789 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:25:43,793 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:25:43,794 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:25:43,795 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:25:43,796 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label56_true-unreach-call.c [2018-11-12 19:25:43,857 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3af04e159/dd2bcd3cbe334db69c4760be258e9c86/FLAG331271e81 [2018-11-12 19:25:44,501 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:25:44,502 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label56_true-unreach-call.c [2018-11-12 19:25:44,521 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3af04e159/dd2bcd3cbe334db69c4760be258e9c86/FLAG331271e81 [2018-11-12 19:25:44,538 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3af04e159/dd2bcd3cbe334db69c4760be258e9c86 [2018-11-12 19:25:44,550 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:25:44,552 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:25:44,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:25:44,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:25:44,558 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:25:44,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:25:44" (1/1) ... [2018-11-12 19:25:44,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b858feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:25:44, skipping insertion in model container [2018-11-12 19:25:44,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:25:44" (1/1) ... [2018-11-12 19:25:44,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:25:44,673 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:25:45,651 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:25:45,656 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:25:45,956 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:25:45,973 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:25:45,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:25:45 WrapperNode [2018-11-12 19:25:45,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:25:45,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:25:45,975 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:25:45,975 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:25:45,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:25:45" (1/1) ... [2018-11-12 19:25:46,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:25:45" (1/1) ... [2018-11-12 19:25:46,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:25:46,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:25:46,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:25:46,177 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:25:46,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:25:45" (1/1) ... [2018-11-12 19:25:46,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:25:45" (1/1) ... [2018-11-12 19:25:46,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:25:45" (1/1) ... [2018-11-12 19:25:46,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:25:45" (1/1) ... [2018-11-12 19:25:46,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:25:45" (1/1) ... [2018-11-12 19:25:46,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:25:45" (1/1) ... [2018-11-12 19:25:46,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:25:45" (1/1) ... [2018-11-12 19:25:46,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:25:46,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:25:46,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:25:46,336 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:25:46,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:25:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:25:46,410 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:25:46,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:25:46,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:25:46,411 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:25:46,411 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:25:46,411 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:25:46,411 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:25:46,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:25:46,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:25:46,412 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:25:46,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:25:53,251 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:25:53,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:25:53 BoogieIcfgContainer [2018-11-12 19:25:53,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:25:53,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:25:53,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:25:53,258 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:25:53,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:25:44" (1/3) ... [2018-11-12 19:25:53,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f662a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:25:53, skipping insertion in model container [2018-11-12 19:25:53,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:25:45" (2/3) ... [2018-11-12 19:25:53,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f662a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:25:53, skipping insertion in model container [2018-11-12 19:25:53,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:25:53" (3/3) ... [2018-11-12 19:25:53,262 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label56_true-unreach-call.c [2018-11-12 19:25:53,273 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:25:53,283 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:25:53,301 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:25:53,345 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:25:53,346 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:25:53,346 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:25:53,346 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:25:53,346 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:25:53,346 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:25:53,346 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:25:53,347 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:25:53,382 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-12 19:25:53,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-12 19:25:53,391 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:25:53,393 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:25:53,396 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:25:53,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:25:53,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1440344268, now seen corresponding path program 1 times [2018-11-12 19:25:53,406 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:25:53,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:25:53,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:25:53,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:25:53,467 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:25:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:25:53,808 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:25:53,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:25:53,923 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:25:53,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 19:25:53,924 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:25:53,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:25:53,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:25:53,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:25:53,949 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-12 19:25:57,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:25:57,377 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-12 19:25:57,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:25:57,381 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2018-11-12 19:25:57,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:25:57,410 INFO L225 Difference]: With dead ends: 1156 [2018-11-12 19:25:57,411 INFO L226 Difference]: Without dead ends: 744 [2018-11-12 19:25:57,421 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:25:57,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-12 19:25:57,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-12 19:25:57,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-12 19:25:57,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1353 transitions. [2018-11-12 19:25:57,558 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1353 transitions. Word has length 40 [2018-11-12 19:25:57,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:25:57,558 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1353 transitions. [2018-11-12 19:25:57,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:25:57,559 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1353 transitions. [2018-11-12 19:25:57,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-11-12 19:25:57,569 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:25:57,570 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:25:57,570 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:25:57,571 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:25:57,571 INFO L82 PathProgramCache]: Analyzing trace with hash 884268999, now seen corresponding path program 1 times [2018-11-12 19:25:57,571 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:25:57,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:25:57,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:25:57,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:25:57,573 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:25:57,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:25:57,955 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:25:57,956 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:25:57,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:25:57,956 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:25:57,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:25:57,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:25:57,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:25:57,960 INFO L87 Difference]: Start difference. First operand 744 states and 1353 transitions. Second operand 6 states. [2018-11-12 19:26:05,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:26:05,066 INFO L93 Difference]: Finished difference Result 2184 states and 3997 transitions. [2018-11-12 19:26:05,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:26:05,068 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2018-11-12 19:26:05,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:26:05,082 INFO L225 Difference]: With dead ends: 2184 [2018-11-12 19:26:05,083 INFO L226 Difference]: Without dead ends: 1446 [2018-11-12 19:26:05,089 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:26:05,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2018-11-12 19:26:05,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1425. [2018-11-12 19:26:05,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2018-11-12 19:26:05,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2267 transitions. [2018-11-12 19:26:05,161 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2267 transitions. Word has length 133 [2018-11-12 19:26:05,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:26:05,162 INFO L480 AbstractCegarLoop]: Abstraction has 1425 states and 2267 transitions. [2018-11-12 19:26:05,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:26:05,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2267 transitions. [2018-11-12 19:26:05,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-11-12 19:26:05,178 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:26:05,178 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:26:05,179 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:26:05,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:26:05,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1634663824, now seen corresponding path program 1 times [2018-11-12 19:26:05,179 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:26:05,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:26:05,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:26:05,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:26:05,181 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:26:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:26:05,552 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:26:05,629 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 66 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:26:05,629 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:26:05,629 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:26:05,630 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 245 with the following transitions: [2018-11-12 19:26:05,632 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [399], [401], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:26:05,711 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:26:05,711 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:26:06,648 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:26:06,650 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Performed 1920 root evaluator evaluations with a maximum evaluation depth of 6. Performed 1920 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 19:26:06,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:26:06,682 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:26:07,682 INFO L227 lantSequenceWeakener]: Weakened 222 states. On average, predicates are now at 77.83% of their original sizes. [2018-11-12 19:26:07,682 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:26:09,070 INFO L415 sIntCurrentIteration]: We unified 243 AI predicates to 243 [2018-11-12 19:26:09,070 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:26:09,071 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:26:09,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-12 19:26:09,072 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:26:09,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 19:26:09,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 19:26:09,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-12 19:26:09,073 INFO L87 Difference]: Start difference. First operand 1425 states and 2267 transitions. Second operand 10 states. [2018-11-12 19:26:13,610 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:26:38,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:26:38,222 INFO L93 Difference]: Finished difference Result 3187 states and 5096 transitions. [2018-11-12 19:26:38,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 19:26:38,222 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 244 [2018-11-12 19:26:38,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:26:38,232 INFO L225 Difference]: With dead ends: 3187 [2018-11-12 19:26:38,232 INFO L226 Difference]: Without dead ends: 1768 [2018-11-12 19:26:38,237 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 247 GetRequests, 215 SyntacticMatches, 20 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-12 19:26:38,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2018-11-12 19:26:38,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1763. [2018-11-12 19:26:38,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2018-11-12 19:26:38,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2612 transitions. [2018-11-12 19:26:38,283 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2612 transitions. Word has length 244 [2018-11-12 19:26:38,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:26:38,284 INFO L480 AbstractCegarLoop]: Abstraction has 1763 states and 2612 transitions. [2018-11-12 19:26:38,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 19:26:38,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2612 transitions. [2018-11-12 19:26:38,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-11-12 19:26:38,291 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:26:38,291 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:26:38,292 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:26:38,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:26:38,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1999835890, now seen corresponding path program 1 times [2018-11-12 19:26:38,293 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:26:38,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:26:38,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:26:38,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:26:38,294 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:26:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:26:38,682 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:26:39,236 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 105 proven. 197 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-12 19:26:39,236 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:26:39,237 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:26:39,237 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 337 with the following transitions: [2018-11-12 19:26:39,238 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [399], [401], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:26:39,252 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:26:39,252 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:26:39,328 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:26:40,697 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:26:40,697 INFO L272 AbstractInterpreter]: Visited 120 different actions 347 times. Merged at 5 different actions 9 times. Never widened. Performed 4851 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4851 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:26:40,727 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:26:40,727 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:26:41,653 INFO L227 lantSequenceWeakener]: Weakened 92 states. On average, predicates are now at 77.87% of their original sizes. [2018-11-12 19:26:41,653 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:26:43,861 INFO L415 sIntCurrentIteration]: We unified 335 AI predicates to 335 [2018-11-12 19:26:43,861 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:26:43,861 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:26:43,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-12 19:26:43,861 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:26:43,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 19:26:43,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 19:26:43,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2018-11-12 19:26:43,863 INFO L87 Difference]: Start difference. First operand 1763 states and 2612 transitions. Second operand 18 states. [2018-11-12 19:27:14,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:27:14,674 INFO L93 Difference]: Finished difference Result 4356 states and 6646 transitions. [2018-11-12 19:27:14,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-12 19:27:14,675 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 336 [2018-11-12 19:27:14,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:27:14,689 INFO L225 Difference]: With dead ends: 4356 [2018-11-12 19:27:14,689 INFO L226 Difference]: Without dead ends: 2937 [2018-11-12 19:27:14,695 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 345 GetRequests, 304 SyntacticMatches, 15 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2018-11-12 19:27:14,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2018-11-12 19:27:14,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2707. [2018-11-12 19:27:14,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2707 states. [2018-11-12 19:27:14,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2707 states to 2707 states and 3594 transitions. [2018-11-12 19:27:14,766 INFO L78 Accepts]: Start accepts. Automaton has 2707 states and 3594 transitions. Word has length 336 [2018-11-12 19:27:14,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:27:14,767 INFO L480 AbstractCegarLoop]: Abstraction has 2707 states and 3594 transitions. [2018-11-12 19:27:14,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 19:27:14,768 INFO L276 IsEmpty]: Start isEmpty. Operand 2707 states and 3594 transitions. [2018-11-12 19:27:14,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-11-12 19:27:14,776 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:27:14,776 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:27:14,776 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:27:14,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:27:14,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1855087594, now seen corresponding path program 1 times [2018-11-12 19:27:14,777 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:27:14,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:27:14,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:27:14,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:27:14,778 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:27:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:27:15,074 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:27:15,550 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 105 proven. 217 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-12 19:27:15,550 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:27:15,550 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:27:15,551 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 373 with the following transitions: [2018-11-12 19:27:15,551 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [399], [401], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:27:15,556 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:27:15,556 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:27:15,699 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:27:16,109 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:27:16,110 INFO L272 AbstractInterpreter]: Visited 137 different actions 398 times. Merged at 5 different actions 9 times. Never widened. Performed 7061 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7061 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:27:16,135 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:27:16,136 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:27:16,782 INFO L227 lantSequenceWeakener]: Weakened 92 states. On average, predicates are now at 77.87% of their original sizes. [2018-11-12 19:27:16,783 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:27:17,693 INFO L415 sIntCurrentIteration]: We unified 371 AI predicates to 371 [2018-11-12 19:27:17,694 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:27:17,694 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:27:17,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-11-12 19:27:17,694 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:27:17,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 19:27:17,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 19:27:17,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-11-12 19:27:17,696 INFO L87 Difference]: Start difference. First operand 2707 states and 3594 transitions. Second operand 17 states. [2018-11-12 19:28:09,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:28:09,514 INFO L93 Difference]: Finished difference Result 5358 states and 7703 transitions. [2018-11-12 19:28:09,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-12 19:28:09,514 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 372 [2018-11-12 19:28:09,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:28:09,530 INFO L225 Difference]: With dead ends: 5358 [2018-11-12 19:28:09,531 INFO L226 Difference]: Without dead ends: 3595 [2018-11-12 19:28:09,537 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 380 GetRequests, 341 SyntacticMatches, 15 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2018-11-12 19:28:09,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3595 states. [2018-11-12 19:28:09,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3595 to 3363. [2018-11-12 19:28:09,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3363 states. [2018-11-12 19:28:09,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 4280 transitions. [2018-11-12 19:28:09,620 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 4280 transitions. Word has length 372 [2018-11-12 19:28:09,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:28:09,620 INFO L480 AbstractCegarLoop]: Abstraction has 3363 states and 4280 transitions. [2018-11-12 19:28:09,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 19:28:09,621 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 4280 transitions. [2018-11-12 19:28:09,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2018-11-12 19:28:09,634 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:28:09,634 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:28:09,635 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:28:09,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:28:09,635 INFO L82 PathProgramCache]: Analyzing trace with hash -695554550, now seen corresponding path program 1 times [2018-11-12 19:28:09,635 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:28:09,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:28:09,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:28:09,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:28:09,636 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:28:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:28:10,031 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:28:10,655 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 105 proven. 217 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-12 19:28:10,655 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:28:10,655 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:28:10,656 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 485 with the following transitions: [2018-11-12 19:28:10,656 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [399], [401], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:28:10,670 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:28:10,670 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:28:11,078 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:28:11,078 INFO L272 AbstractInterpreter]: Visited 249 different actions 492 times. Merged at 5 different actions 5 times. Never widened. Performed 6292 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6292 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:28:11,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:28:11,085 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:28:11,742 INFO L227 lantSequenceWeakener]: Weakened 254 states. On average, predicates are now at 77.9% of their original sizes. [2018-11-12 19:28:11,742 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:28:13,612 INFO L415 sIntCurrentIteration]: We unified 483 AI predicates to 483 [2018-11-12 19:28:13,612 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:28:13,613 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:28:13,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-12 19:28:13,613 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:28:13,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 19:28:13,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 19:28:13,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-11-12 19:28:13,614 INFO L87 Difference]: Start difference. First operand 3363 states and 4280 transitions. Second operand 18 states. [2018-11-12 19:28:15,266 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:28:30,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:28:30,758 INFO L93 Difference]: Finished difference Result 6104 states and 8325 transitions. [2018-11-12 19:28:30,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-12 19:28:30,758 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 484 [2018-11-12 19:28:30,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:28:30,774 INFO L225 Difference]: With dead ends: 6104 [2018-11-12 19:28:30,775 INFO L226 Difference]: Without dead ends: 3999 [2018-11-12 19:28:30,782 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 499 GetRequests, 399 SyntacticMatches, 68 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2018-11-12 19:28:30,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3999 states. [2018-11-12 19:28:30,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3999 to 3994. [2018-11-12 19:28:30,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3994 states. [2018-11-12 19:28:30,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3994 states to 3994 states and 4945 transitions. [2018-11-12 19:28:30,881 INFO L78 Accepts]: Start accepts. Automaton has 3994 states and 4945 transitions. Word has length 484 [2018-11-12 19:28:30,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:28:30,882 INFO L480 AbstractCegarLoop]: Abstraction has 3994 states and 4945 transitions. [2018-11-12 19:28:30,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 19:28:30,883 INFO L276 IsEmpty]: Start isEmpty. Operand 3994 states and 4945 transitions. [2018-11-12 19:28:30,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2018-11-12 19:28:30,900 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:28:30,901 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:28:30,901 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:28:30,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:28:30,901 INFO L82 PathProgramCache]: Analyzing trace with hash -231752582, now seen corresponding path program 1 times [2018-11-12 19:28:30,901 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:28:30,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:28:30,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:28:30,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:28:30,903 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:28:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:28:31,318 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:28:31,963 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 105 proven. 217 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-12 19:28:31,964 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:28:31,964 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:28:31,964 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 493 with the following transitions: [2018-11-12 19:28:31,965 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [399], [401], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:28:31,970 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:28:31,970 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:28:34,564 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:28:34,565 INFO L272 AbstractInterpreter]: Visited 257 different actions 2265 times. Merged at 5 different actions 40 times. Widened at 1 different actions 4 times. Performed 40011 root evaluator evaluations with a maximum evaluation depth of 6. Performed 40011 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:28:34,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:28:34,576 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:28:35,675 INFO L227 lantSequenceWeakener]: Weakened 139 states. On average, predicates are now at 78.32% of their original sizes. [2018-11-12 19:28:35,675 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:28:36,055 INFO L415 sIntCurrentIteration]: We unified 491 AI predicates to 491 [2018-11-12 19:28:36,056 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:28:36,056 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:28:36,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-12 19:28:36,056 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:28:36,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-12 19:28:36,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-12 19:28:36,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2018-11-12 19:28:36,057 INFO L87 Difference]: Start difference. First operand 3994 states and 4945 transitions. Second operand 23 states. [2018-11-12 19:28:38,348 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:29:08,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:29:08,469 INFO L93 Difference]: Finished difference Result 6740 states and 9001 transitions. [2018-11-12 19:29:08,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-12 19:29:08,469 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 492 [2018-11-12 19:29:08,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:29:08,486 INFO L225 Difference]: With dead ends: 6740 [2018-11-12 19:29:08,486 INFO L226 Difference]: Without dead ends: 4635 [2018-11-12 19:29:08,493 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 504 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=259, Invalid=1001, Unknown=0, NotChecked=0, Total=1260 [2018-11-12 19:29:08,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4635 states. [2018-11-12 19:29:08,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4635 to 4627. [2018-11-12 19:29:08,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4627 states. [2018-11-12 19:29:08,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 5616 transitions. [2018-11-12 19:29:08,597 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 5616 transitions. Word has length 492 [2018-11-12 19:29:08,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:29:08,598 INFO L480 AbstractCegarLoop]: Abstraction has 4627 states and 5616 transitions. [2018-11-12 19:29:08,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-12 19:29:08,598 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 5616 transitions. [2018-11-12 19:29:08,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2018-11-12 19:29:08,610 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:29:08,610 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2018-11-12 19:29:08,611 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:29:08,611 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:29:08,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1736295052, now seen corresponding path program 1 times [2018-11-12 19:29:08,611 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:29:08,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:29:08,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:29:08,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:29:08,613 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:29:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:29:09,418 WARN L179 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-12 19:29:09,618 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-12 19:29:09,805 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2018-11-12 19:29:10,751 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 232 proven. 200 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-11-12 19:29:10,751 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:29:10,752 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:29:10,752 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 577 with the following transitions: [2018-11-12 19:29:10,752 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [399], [401], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:29:10,757 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:29:10,757 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:29:10,836 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:29:11,637 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:29:11,638 INFO L272 AbstractInterpreter]: Visited 250 different actions 995 times. Merged at 7 different actions 28 times. Never widened. Performed 15596 root evaluator evaluations with a maximum evaluation depth of 6. Performed 15596 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 19:29:11,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:29:11,643 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:29:12,135 INFO L227 lantSequenceWeakener]: Weakened 573 states. On average, predicates are now at 77.5% of their original sizes. [2018-11-12 19:29:12,135 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:29:12,775 INFO L415 sIntCurrentIteration]: We unified 575 AI predicates to 575 [2018-11-12 19:29:12,776 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:29:12,776 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:29:12,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 22 [2018-11-12 19:29:12,777 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:29:12,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 19:29:12,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 19:29:12,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 19:29:12,778 INFO L87 Difference]: Start difference. First operand 4627 states and 5616 transitions. Second operand 11 states. Received shutdown request... [2018-11-12 19:29:19,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-12 19:29:19,597 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:29:19,602 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:29:19,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:29:19 BoogieIcfgContainer [2018-11-12 19:29:19,602 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:29:19,603 INFO L168 Benchmark]: Toolchain (without parser) took 215052.43 ms. Allocated memory was 1.5 GB in the beginning and 5.3 GB in the end (delta: 3.7 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.2 MB). Peak memory consumption was 3.9 GB. Max. memory is 7.1 GB. [2018-11-12 19:29:19,604 INFO L168 Benchmark]: CDTParser took 0.25 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 19:29:19,605 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1420.96 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-12 19:29:19,605 INFO L168 Benchmark]: Boogie Procedure Inliner took 201.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -864.7 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2018-11-12 19:29:19,606 INFO L168 Benchmark]: Boogie Preprocessor took 157.83 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-11-12 19:29:19,607 INFO L168 Benchmark]: RCFGBuilder took 6917.72 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 258.7 MB). Peak memory consumption was 258.7 MB. Max. memory is 7.1 GB. [2018-11-12 19:29:19,608 INFO L168 Benchmark]: TraceAbstraction took 206348.49 ms. Allocated memory was 2.3 GB in the beginning and 5.3 GB in the end (delta: 3.0 GB). Free memory was 1.9 GB in the beginning and 1.3 GB in the end (delta: 623.7 MB). Peak memory consumption was 3.6 GB. Max. memory is 7.1 GB. [2018-11-12 19:29:19,612 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 1420.96 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 201.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -864.7 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 157.83 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6917.72 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 258.7 MB). Peak memory consumption was 258.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206348.49 ms. Allocated memory was 2.3 GB in the beginning and 5.3 GB in the end (delta: 3.0 GB). Free memory was 1.9 GB in the beginning and 1.3 GB in the end (delta: 623.7 MB). Peak memory consumption was 3.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 106]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 106). Cancelled while BasicCegarLoop was constructing difference of abstraction (4627states) and FLOYD_HOARE automaton (currently 16 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (2287 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 206.2s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 178.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2312 SDtfs, 23484 SDslu, 1513 SDs, 0 SdLazy, 25929 SolverSat, 3906 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 69.9s Time, PredicateUnifierStatistics: 12 DeclaredPredicates, 2575 GetRequests, 2299 SyntacticMatches, 121 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1415 ImplicationChecksByTransitivity, 8.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4627occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.0s AbstIntTime, 6 AbstIntIterations, 6 AbstIntStrong, 0.997658401518882 AbsIntWeakeningRatio, 0.07686148919135308 AbsIntAvgWeakeningVarsNumRemoved, 13.264211369095277 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 501 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 2677 NumberOfCodeBlocks, 2677 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2669 ConstructedInterpolants, 0 QuantifiedInterpolants, 6270309 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1325/2461 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown