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/Problem15_label53_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:16:24,500 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:16:24,502 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:16:24,528 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:16:24,528 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:16:24,529 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:16:24,531 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:16:24,533 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:16:24,535 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:16:24,536 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:16:24,537 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:16:24,537 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:16:24,538 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:16:24,539 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:16:24,541 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:16:24,541 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:16:24,542 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:16:24,544 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:16:24,547 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:16:24,548 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:16:24,550 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:16:24,551 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:16:24,554 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:16:24,554 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:16:24,555 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:16:24,556 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:16:24,557 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:16:24,558 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:16:24,559 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:16:24,560 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:16:24,560 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:16:24,561 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:16:24,561 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:16:24,562 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:16:24,563 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:16:24,564 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:16:24,564 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 19:16:24,581 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:16:24,581 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:16:24,582 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:16:24,583 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:16:24,583 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:16:24,583 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:16:24,583 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:16:24,583 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:16:24,584 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:16:24,584 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:16:24,584 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:16:24,584 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:16:24,584 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:16:24,585 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:16:24,585 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:16:24,586 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:16:24,586 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:16:24,586 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:16:24,586 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:16:24,587 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:16:24,587 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:16:24,587 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:16:24,587 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:16:24,587 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:16:24,588 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:16:24,588 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:16:24,588 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:16:24,588 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:16:24,588 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:16:24,589 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:16:24,589 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:16:24,589 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:16:24,589 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:16:24,589 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:16:24,590 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:16:24,633 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:16:24,654 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:16:24,658 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:16:24,660 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:16:24,660 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:16:24,661 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label53_true-unreach-call.c [2018-11-12 19:16:24,731 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3746baad4/4749b6f3d23f4003a67e0234792d8a38/FLAG3139b3e93 [2018-11-12 19:16:25,398 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:16:25,399 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label53_true-unreach-call.c [2018-11-12 19:16:25,421 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3746baad4/4749b6f3d23f4003a67e0234792d8a38/FLAG3139b3e93 [2018-11-12 19:16:25,441 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3746baad4/4749b6f3d23f4003a67e0234792d8a38 [2018-11-12 19:16:25,452 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:16:25,453 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:16:25,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:16:25,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:16:25,458 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:16:25,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:16:25" (1/1) ... [2018-11-12 19:16:25,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1160d26f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:16:25, skipping insertion in model container [2018-11-12 19:16:25,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:16:25" (1/1) ... [2018-11-12 19:16:25,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:16:25,568 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:16:26,403 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:16:26,408 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:16:26,693 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:16:26,719 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:16:26,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:16:26 WrapperNode [2018-11-12 19:16:26,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:16:26,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:16:26,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:16:26,721 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:16:26,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:16:26" (1/1) ... [2018-11-12 19:16:26,956 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:16:26" (1/1) ... [2018-11-12 19:16:26,972 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:16:26,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:16:26,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:16:26,973 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:16:26,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:16:26" (1/1) ... [2018-11-12 19:16:26,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:16:26" (1/1) ... [2018-11-12 19:16:26,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:16:26" (1/1) ... [2018-11-12 19:16:26,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:16:26" (1/1) ... [2018-11-12 19:16:27,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:16:26" (1/1) ... [2018-11-12 19:16:27,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:16:26" (1/1) ... [2018-11-12 19:16:27,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:16:26" (1/1) ... [2018-11-12 19:16:27,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:16:27,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:16:27,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:16:27,139 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:16:27,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:16:26" (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 19:16:27,210 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:16:27,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:16:27,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:16:27,211 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:16:27,211 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:16:27,211 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:16:27,212 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:16:27,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:16:27,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:16:27,212 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:16:27,212 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:16:33,640 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:16:33,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:16:33 BoogieIcfgContainer [2018-11-12 19:16:33,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:16:33,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:16:33,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:16:33,647 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:16:33,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:16:25" (1/3) ... [2018-11-12 19:16:33,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6420fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:16:33, skipping insertion in model container [2018-11-12 19:16:33,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:16:26" (2/3) ... [2018-11-12 19:16:33,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6420fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:16:33, skipping insertion in model container [2018-11-12 19:16:33,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:16:33" (3/3) ... [2018-11-12 19:16:33,651 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label53_true-unreach-call.c [2018-11-12 19:16:33,661 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:16:33,670 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:16:33,687 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:16:33,729 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:16:33,730 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:16:33,730 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:16:33,730 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:16:33,730 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:16:33,730 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:16:33,731 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:16:33,731 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:16:33,763 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-12 19:16:33,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-12 19:16:33,773 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:16:33,774 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:16:33,776 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:16:33,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:16:33,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1192963812, now seen corresponding path program 1 times [2018-11-12 19:16:33,786 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:16:33,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:16:33,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:16:33,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:16:33,835 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:16:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:16:34,322 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-12 19:16:34,341 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 19:16:34,344 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:16:34,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:16:34,344 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:16:34,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:16:34,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:16:34,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:16:34,370 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-12 19:16:40,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:16:40,874 INFO L93 Difference]: Finished difference Result 1550 states and 2835 transitions. [2018-11-12 19:16:40,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:16:40,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-11-12 19:16:40,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:16:40,915 INFO L225 Difference]: With dead ends: 1550 [2018-11-12 19:16:40,915 INFO L226 Difference]: Without dead ends: 1106 [2018-11-12 19:16:40,932 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:16:40,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2018-11-12 19:16:41,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 762. [2018-11-12 19:16:41,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2018-11-12 19:16:41,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1263 transitions. [2018-11-12 19:16:41,046 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1263 transitions. Word has length 54 [2018-11-12 19:16:41,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:16:41,047 INFO L480 AbstractCegarLoop]: Abstraction has 762 states and 1263 transitions. [2018-11-12 19:16:41,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:16:41,047 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1263 transitions. [2018-11-12 19:16:41,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-11-12 19:16:41,061 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:16:41,061 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:16:41,061 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:16:41,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:16:41,062 INFO L82 PathProgramCache]: Analyzing trace with hash -4975238, now seen corresponding path program 1 times [2018-11-12 19:16:41,062 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:16:41,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:16:41,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:16:41,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:16:41,064 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:16:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:16:41,348 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:16:41,349 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:16:41,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 19:16:41,349 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:16:41,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 19:16:41,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 19:16:41,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 19:16:41,352 INFO L87 Difference]: Start difference. First operand 762 states and 1263 transitions. Second operand 5 states. [2018-11-12 19:16:46,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:16:46,269 INFO L93 Difference]: Finished difference Result 2248 states and 3762 transitions. [2018-11-12 19:16:46,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 19:16:46,270 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2018-11-12 19:16:46,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:16:46,287 INFO L225 Difference]: With dead ends: 2248 [2018-11-12 19:16:46,287 INFO L226 Difference]: Without dead ends: 1492 [2018-11-12 19:16:46,293 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:16:46,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2018-11-12 19:16:46,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1457. [2018-11-12 19:16:46,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2018-11-12 19:16:46,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2152 transitions. [2018-11-12 19:16:46,377 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2152 transitions. Word has length 127 [2018-11-12 19:16:46,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:16:46,377 INFO L480 AbstractCegarLoop]: Abstraction has 1457 states and 2152 transitions. [2018-11-12 19:16:46,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 19:16:46,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2152 transitions. [2018-11-12 19:16:46,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-11-12 19:16:46,384 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:16:46,385 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:16:46,385 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:16:46,385 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:16:46,385 INFO L82 PathProgramCache]: Analyzing trace with hash -2136699286, now seen corresponding path program 1 times [2018-11-12 19:16:46,385 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:16:46,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:16:46,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:16:46,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:16:46,387 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:16:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:16:47,219 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:16:47,219 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:16:47,219 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:16:47,221 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 136 with the following transitions: [2018-11-12 19:16:47,223 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [405], [407], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:16:47,281 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:16:47,282 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:16:47,722 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:16:47,724 INFO L272 AbstractInterpreter]: Visited 85 different actions 85 times. Never merged. Never widened. Performed 755 root evaluator evaluations with a maximum evaluation depth of 4. Performed 755 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 19:16:47,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:16:47,782 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:16:48,266 INFO L227 lantSequenceWeakener]: Weakened 129 states. On average, predicates are now at 78.47% of their original sizes. [2018-11-12 19:16:48,266 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:16:48,506 INFO L415 sIntCurrentIteration]: We unified 134 AI predicates to 134 [2018-11-12 19:16:48,506 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:16:48,508 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:16:48,508 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-11-12 19:16:48,508 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:16:48,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 19:16:48,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 19:16:48,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 19:16:48,512 INFO L87 Difference]: Start difference. First operand 1457 states and 2152 transitions. Second operand 7 states. [2018-11-12 19:16:50,849 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:17:19,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:17:19,470 INFO L93 Difference]: Finished difference Result 3218 states and 4681 transitions. [2018-11-12 19:17:19,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:17:19,470 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2018-11-12 19:17:19,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:17:19,479 INFO L225 Difference]: With dead ends: 3218 [2018-11-12 19:17:19,480 INFO L226 Difference]: Without dead ends: 1767 [2018-11-12 19:17:19,484 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 135 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:17:19,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2018-11-12 19:17:19,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1765. [2018-11-12 19:17:19,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1765 states. [2018-11-12 19:17:19,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1765 states to 1765 states and 2468 transitions. [2018-11-12 19:17:19,527 INFO L78 Accepts]: Start accepts. Automaton has 1765 states and 2468 transitions. Word has length 135 [2018-11-12 19:17:19,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:17:19,528 INFO L480 AbstractCegarLoop]: Abstraction has 1765 states and 2468 transitions. [2018-11-12 19:17:19,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 19:17:19,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1765 states and 2468 transitions. [2018-11-12 19:17:19,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-11-12 19:17:19,532 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:17:19,533 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 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 19:17:19,533 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:17:19,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:17:19,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1554168383, now seen corresponding path program 1 times [2018-11-12 19:17:19,534 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:17:19,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:17:19,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:17:19,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:17:19,535 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:17:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:17:20,397 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 48 proven. 120 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-12 19:17:20,397 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:17:20,397 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:17:20,398 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 232 with the following transitions: [2018-11-12 19:17:20,398 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [405], [407], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:17:20,404 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:17:20,404 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:17:20,485 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:17:22,171 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:17:22,171 INFO L272 AbstractInterpreter]: Visited 104 different actions 692 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Performed 11677 root evaluator evaluations with a maximum evaluation depth of 6. Performed 11677 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 19:17:22,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:17:22,199 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:17:22,834 INFO L227 lantSequenceWeakener]: Weakened 37 states. On average, predicates are now at 77.64% of their original sizes. [2018-11-12 19:17:22,834 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:17:26,288 INFO L415 sIntCurrentIteration]: We unified 230 AI predicates to 230 [2018-11-12 19:17:26,289 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:17:26,289 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:17:26,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [13] total 26 [2018-11-12 19:17:26,290 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:17:26,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-12 19:17:26,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-12 19:17:26,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2018-11-12 19:17:26,292 INFO L87 Difference]: Start difference. First operand 1765 states and 2468 transitions. Second operand 15 states. [2018-11-12 19:17:59,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:17:59,204 INFO L93 Difference]: Finished difference Result 4684 states and 6372 transitions. [2018-11-12 19:17:59,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-12 19:17:59,204 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 231 [2018-11-12 19:17:59,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:17:59,218 INFO L225 Difference]: With dead ends: 4684 [2018-11-12 19:17:59,219 INFO L226 Difference]: Without dead ends: 3233 [2018-11-12 19:17:59,224 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 236 GetRequests, 133 SyntacticMatches, 84 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2018-11-12 19:17:59,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3233 states. [2018-11-12 19:17:59,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3233 to 2703. [2018-11-12 19:17:59,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2703 states. [2018-11-12 19:17:59,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2703 states to 2703 states and 3451 transitions. [2018-11-12 19:17:59,294 INFO L78 Accepts]: Start accepts. Automaton has 2703 states and 3451 transitions. Word has length 231 [2018-11-12 19:17:59,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:17:59,295 INFO L480 AbstractCegarLoop]: Abstraction has 2703 states and 3451 transitions. [2018-11-12 19:17:59,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-12 19:17:59,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2703 states and 3451 transitions. [2018-11-12 19:17:59,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-11-12 19:17:59,302 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:17:59,303 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:17:59,303 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:17:59,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:17:59,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1716138778, now seen corresponding path program 1 times [2018-11-12 19:17:59,304 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:17:59,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:17:59,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:17:59,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:17:59,305 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:17:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:17:59,674 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:17:59,675 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:17:59,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:17:59,675 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:17:59,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:17:59,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:17:59,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:17:59,676 INFO L87 Difference]: Start difference. First operand 2703 states and 3451 transitions. Second operand 4 states. [2018-11-12 19:18:03,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:18:03,946 INFO L93 Difference]: Finished difference Result 6651 states and 9609 transitions. [2018-11-12 19:18:03,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:18:03,947 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 341 [2018-11-12 19:18:03,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:18:03,977 INFO L225 Difference]: With dead ends: 6651 [2018-11-12 19:18:03,977 INFO L226 Difference]: Without dead ends: 5200 [2018-11-12 19:18:03,992 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 19:18:03,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5200 states. [2018-11-12 19:18:04,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5200 to 5197. [2018-11-12 19:18:04,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5197 states. [2018-11-12 19:18:04,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 6795 transitions. [2018-11-12 19:18:04,134 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 6795 transitions. Word has length 341 [2018-11-12 19:18:04,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:18:04,135 INFO L480 AbstractCegarLoop]: Abstraction has 5197 states and 6795 transitions. [2018-11-12 19:18:04,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:18:04,135 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 6795 transitions. [2018-11-12 19:18:04,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2018-11-12 19:18:04,151 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:18:04,151 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-12 19:18:04,151 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:18:04,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:18:04,152 INFO L82 PathProgramCache]: Analyzing trace with hash -720465391, now seen corresponding path program 1 times [2018-11-12 19:18:04,152 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:18:04,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:18:04,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:18:04,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:18:04,153 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:18:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:18:05,231 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:18:06,861 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 164 proven. 191 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-12 19:18:06,862 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:18:06,862 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:18:06,862 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 481 with the following transitions: [2018-11-12 19:18:06,863 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [405], [407], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [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], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [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], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:18:06,873 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:18:06,873 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:18:07,259 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:18:07,979 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:18:07,979 INFO L272 AbstractInterpreter]: Visited 284 different actions 851 times. Merged at 7 different actions 21 times. Never widened. Performed 15715 root evaluator evaluations with a maximum evaluation depth of 6. Performed 15715 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 19:18:07,983 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:18:07,983 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:18:08,632 INFO L227 lantSequenceWeakener]: Weakened 477 states. On average, predicates are now at 80.28% of their original sizes. [2018-11-12 19:18:08,634 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:18:08,959 INFO L415 sIntCurrentIteration]: We unified 479 AI predicates to 479 [2018-11-12 19:18:08,959 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:18:08,960 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:18:08,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 22 [2018-11-12 19:18:08,960 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:18:08,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 19:18:08,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 19:18:08,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 19:18:08,962 INFO L87 Difference]: Start difference. First operand 5197 states and 6795 transitions. Second operand 11 states. [2018-11-12 19:18:26,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:18:26,866 INFO L93 Difference]: Finished difference Result 11039 states and 14471 transitions. [2018-11-12 19:18:26,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-12 19:18:26,867 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 480 [2018-11-12 19:18:26,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:18:26,898 INFO L225 Difference]: With dead ends: 11039 [2018-11-12 19:18:26,899 INFO L226 Difference]: Without dead ends: 7094 [2018-11-12 19:18:26,917 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 489 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2018-11-12 19:18:26,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7094 states. [2018-11-12 19:18:27,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7094 to 7087. [2018-11-12 19:18:27,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7087 states. [2018-11-12 19:18:27,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7087 states to 7087 states and 8845 transitions. [2018-11-12 19:18:27,092 INFO L78 Accepts]: Start accepts. Automaton has 7087 states and 8845 transitions. Word has length 480 [2018-11-12 19:18:27,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:18:27,093 INFO L480 AbstractCegarLoop]: Abstraction has 7087 states and 8845 transitions. [2018-11-12 19:18:27,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 19:18:27,094 INFO L276 IsEmpty]: Start isEmpty. Operand 7087 states and 8845 transitions. [2018-11-12 19:18:27,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2018-11-12 19:18:27,117 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:18:27,117 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:18:27,118 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:18:27,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:18:27,118 INFO L82 PathProgramCache]: Analyzing trace with hash -160659686, now seen corresponding path program 1 times [2018-11-12 19:18:27,118 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:18:27,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:18:27,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:18:27,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:18:27,120 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:18:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:18:32,468 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 152 proven. 181 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-12 19:18:32,468 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:18:32,468 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:18:32,468 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 523 with the following transitions: [2018-11-12 19:18:32,469 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [405], [407], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [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], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [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], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:18:32,478 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:18:32,478 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:18:32,674 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:18:33,561 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:18:33,561 INFO L272 AbstractInterpreter]: Visited 284 different actions 1124 times. Merged at 7 different actions 21 times. Never widened. Performed 17951 root evaluator evaluations with a maximum evaluation depth of 6. Performed 17951 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 19:18:33,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:18:33,566 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:18:34,052 INFO L227 lantSequenceWeakener]: Weakened 519 states. On average, predicates are now at 80.32% of their original sizes. [2018-11-12 19:18:34,053 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:18:34,162 INFO L415 sIntCurrentIteration]: We unified 521 AI predicates to 521 [2018-11-12 19:18:34,162 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:18:34,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:18:34,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 17 [2018-11-12 19:18:34,163 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:18:34,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 19:18:34,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 19:18:34,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 19:18:34,164 INFO L87 Difference]: Start difference. First operand 7087 states and 8845 transitions. Second operand 11 states. [2018-11-12 19:19:14,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:19:14,065 INFO L93 Difference]: Finished difference Result 17055 states and 22222 transitions. [2018-11-12 19:19:14,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-12 19:19:14,065 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 522 [2018-11-12 19:19:14,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:19:14,126 INFO L225 Difference]: With dead ends: 17055 [2018-11-12 19:19:14,126 INFO L226 Difference]: Without dead ends: 11539 [2018-11-12 19:19:14,157 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 533 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2018-11-12 19:19:14,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11539 states. [2018-11-12 19:19:14,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11539 to 11185. [2018-11-12 19:19:14,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11185 states. [2018-11-12 19:19:14,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11185 states to 11185 states and 13837 transitions. [2018-11-12 19:19:14,425 INFO L78 Accepts]: Start accepts. Automaton has 11185 states and 13837 transitions. Word has length 522 [2018-11-12 19:19:14,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:19:14,426 INFO L480 AbstractCegarLoop]: Abstraction has 11185 states and 13837 transitions. [2018-11-12 19:19:14,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 19:19:14,426 INFO L276 IsEmpty]: Start isEmpty. Operand 11185 states and 13837 transitions. [2018-11-12 19:19:14,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2018-11-12 19:19:14,450 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:19:14,451 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:19:14,451 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:19:14,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:19:14,452 INFO L82 PathProgramCache]: Analyzing trace with hash -781888300, now seen corresponding path program 1 times [2018-11-12 19:19:14,453 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:19:14,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:19:14,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:19:14,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:19:14,454 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:19:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:19:15,304 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2018-11-12 19:19:15,305 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:19:15,305 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:19:15,305 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 524 with the following transitions: [2018-11-12 19:19:15,306 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [405], [407], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1167], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [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], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:19:15,310 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:19:15,310 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:19:15,522 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:19:16,644 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:19:16,644 INFO L272 AbstractInterpreter]: Visited 283 different actions 842 times. Merged at 7 different actions 15 times. Never widened. Performed 11905 root evaluator evaluations with a maximum evaluation depth of 6. Performed 11905 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 19:19:16,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:19:16,654 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:19:17,222 INFO L227 lantSequenceWeakener]: Weakened 187 states. On average, predicates are now at 80.84% of their original sizes. [2018-11-12 19:19:17,222 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:19:17,625 INFO L415 sIntCurrentIteration]: We unified 522 AI predicates to 522 [2018-11-12 19:19:17,625 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:19:17,625 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:19:17,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [5] total 24 [2018-11-12 19:19:17,626 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:19:17,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-12 19:19:17,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-12 19:19:17,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-12 19:19:17,627 INFO L87 Difference]: Start difference. First operand 11185 states and 13837 transitions. Second operand 21 states. Received shutdown request... [2018-11-12 19:20:01,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-12 19:20:01,474 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:20:01,481 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:20:01,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:20:01 BoogieIcfgContainer [2018-11-12 19:20:01,482 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:20:01,483 INFO L168 Benchmark]: Toolchain (without parser) took 216030.52 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 4.7 GB in the end (delta: -3.2 GB). Peak memory consumption was 871.4 MB. Max. memory is 7.1 GB. [2018-11-12 19:20:01,484 INFO L168 Benchmark]: CDTParser took 0.24 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 19:20:01,485 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1265.92 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-11-12 19:20:01,486 INFO L168 Benchmark]: Boogie Procedure Inliner took 251.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.1 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -923.0 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. [2018-11-12 19:20:01,487 INFO L168 Benchmark]: Boogie Preprocessor took 166.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 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 19:20:01,487 INFO L168 Benchmark]: RCFGBuilder took 6501.62 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 289.9 MB). Peak memory consumption was 289.9 MB. Max. memory is 7.1 GB. [2018-11-12 19:20:01,488 INFO L168 Benchmark]: TraceAbstraction took 207840.24 ms. Allocated memory was 2.3 GB in the beginning and 5.6 GB in the end (delta: 3.3 GB). Free memory was 2.0 GB in the beginning and 4.7 GB in the end (delta: -2.7 GB). Peak memory consumption was 604.7 MB. Max. memory is 7.1 GB. [2018-11-12 19:20:01,493 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 1265.92 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 251.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.1 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -923.0 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 166.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 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 6501.62 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 289.9 MB). Peak memory consumption was 289.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207840.24 ms. Allocated memory was 2.3 GB in the beginning and 5.6 GB in the end (delta: 3.3 GB). Free memory was 2.0 GB in the beginning and 4.7 GB in the end (delta: -2.7 GB). Peak memory consumption was 604.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 148]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 148). Cancelled while BasicCegarLoop was constructing difference of abstraction (11185states) and FLOYD_HOARE automaton (currently 32 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (11544 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 207.7s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 181.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2656 SDtfs, 16816 SDslu, 3601 SDs, 0 SdLazy, 23012 SolverSat, 2783 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 78.7s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 1953 GetRequests, 1757 SyntacticMatches, 84 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1201 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11185occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.9s AbstIntTime, 5 AbstIntIterations, 5 AbstIntStrong, 0.9978821133851827 AbsIntWeakeningRatio, 0.07211028632025451 AbsIntAvgWeakeningVarsNumRemoved, 18.410922587486745 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 1275 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 2413 NumberOfCodeBlocks, 2413 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2405 ConstructedInterpolants, 0 QuantifiedInterpolants, 5899290 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 760/1381 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown