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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label16_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:09:42,535 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:09:42,537 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:09:42,550 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:09:42,550 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:09:42,551 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:09:42,552 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:09:42,555 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:09:42,556 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:09:42,557 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:09:42,558 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:09:42,559 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:09:42,560 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:09:42,561 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:09:42,562 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:09:42,563 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:09:42,564 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:09:42,565 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:09:42,568 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:09:42,569 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:09:42,570 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:09:42,575 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:09:42,581 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:09:42,595 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 00:09:42,596 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 00:09:42,597 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 00:09:42,597 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 00:09:42,598 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:09:42,630 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:09:42,631 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:09:42,632 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:09:42,633 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:09:42,633 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:09:42,633 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:09:42,633 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:09:42,633 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:09:42,634 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:09:42,634 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:09:42,634 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:09:42,634 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:09:42,635 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:09:42,636 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:09:42,636 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:09:42,636 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:09:42,636 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:09:42,636 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:09:42,636 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:09:42,637 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:09:42,637 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:09:42,637 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:09:42,637 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:09:42,637 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:09:42,638 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:09:42,640 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:09:42,640 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:09:42,640 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:09:42,640 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:09:42,640 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:09:42,641 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:09:42,641 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:09:42,641 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:09:42,641 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:09:42,709 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:09:42,729 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:09:42,734 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:09:42,736 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:09:42,736 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:09:42,737 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label16_false-unreach-call.c [2018-11-07 00:09:42,802 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4962fb43/243259e8edbe48ba8dce379561d991c2/FLAGe011a34b7 [2018-11-07 00:09:43,601 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:09:43,602 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label16_false-unreach-call.c [2018-11-07 00:09:43,641 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4962fb43/243259e8edbe48ba8dce379561d991c2/FLAGe011a34b7 [2018-11-07 00:09:43,662 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4962fb43/243259e8edbe48ba8dce379561d991c2 [2018-11-07 00:09:43,676 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:09:43,678 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:09:43,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:09:43,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:09:43,684 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:09:43,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:09:43" (1/1) ... [2018-11-07 00:09:43,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f02fcd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:09:43, skipping insertion in model container [2018-11-07 00:09:43,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:09:43" (1/1) ... [2018-11-07 00:09:43,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:09:43,908 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:09:45,400 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:09:45,406 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:09:46,211 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:09:46,253 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:09:46,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:09:46 WrapperNode [2018-11-07 00:09:46,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:09:46,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:09:46,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:09:46,255 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:09:46,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:09:46" (1/1) ... [2018-11-07 00:09:46,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:09:46" (1/1) ... [2018-11-07 00:09:46,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:09:46,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:09:46,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:09:46,654 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:09:46,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:09:46" (1/1) ... [2018-11-07 00:09:46,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:09:46" (1/1) ... [2018-11-07 00:09:46,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:09:46" (1/1) ... [2018-11-07 00:09:46,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:09:46" (1/1) ... [2018-11-07 00:09:46,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:09:46" (1/1) ... [2018-11-07 00:09:46,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:09:46" (1/1) ... [2018-11-07 00:09:46,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:09:46" (1/1) ... [2018-11-07 00:09:46,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:09:46,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:09:46,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:09:46,957 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:09:46,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:09:46" (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 [2018-11-07 00:09:47,030 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:09:47,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:09:47,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:09:47,031 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 00:09:47,032 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 00:09:47,032 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 00:09:47,032 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 00:09:47,032 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:09:47,032 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:09:47,033 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:09:47,033 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:09:47,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:09:47,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:09:47,037 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:09:47,037 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:09:59,079 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:09:59,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:09:59 BoogieIcfgContainer [2018-11-07 00:09:59,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:09:59,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:09:59,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:09:59,085 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:09:59,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:09:43" (1/3) ... [2018-11-07 00:09:59,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e034b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:09:59, skipping insertion in model container [2018-11-07 00:09:59,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:09:46" (2/3) ... [2018-11-07 00:09:59,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e034b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:09:59, skipping insertion in model container [2018-11-07 00:09:59,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:09:59" (3/3) ... [2018-11-07 00:09:59,088 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label16_false-unreach-call.c [2018-11-07 00:09:59,099 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:09:59,110 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:09:59,127 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:09:59,175 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:09:59,175 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:09:59,176 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:09:59,176 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:09:59,176 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:09:59,176 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:09:59,176 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:09:59,176 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:09:59,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 00:09:59,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-07 00:09:59,232 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:09:59,233 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] [2018-11-07 00:09:59,235 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:09:59,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:09:59,241 INFO L82 PathProgramCache]: Analyzing trace with hash -263772117, now seen corresponding path program 1 times [2018-11-07 00:09:59,243 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:09:59,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:09:59,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:09:59,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:09:59,301 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:09:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:09:59,726 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-07 00:09:59,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:09:59,736 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:09:59,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:09:59,737 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:09:59,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:09:59,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:09:59,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:09:59,763 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-11-07 00:10:13,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:10:13,295 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-11-07 00:10:13,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:10:13,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-11-07 00:10:13,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:10:13,357 INFO L225 Difference]: With dead ends: 3968 [2018-11-07 00:10:13,360 INFO L226 Difference]: Without dead ends: 2842 [2018-11-07 00:10:13,379 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:10:13,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-11-07 00:10:13,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-11-07 00:10:13,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-11-07 00:10:13,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-11-07 00:10:13,616 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 29 [2018-11-07 00:10:13,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:10:13,616 INFO L480 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-11-07 00:10:13,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:10:13,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-11-07 00:10:13,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-11-07 00:10:13,624 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:10:13,624 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:10:13,626 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:10:13,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:10:13,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1557102702, now seen corresponding path program 1 times [2018-11-07 00:10:13,627 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:10:13,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:10:13,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:10:13,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:10:13,630 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:10:13,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:10:14,040 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:10:14,041 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:10:14,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:10:14,041 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:10:14,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:10:14,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:10:14,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:10:14,044 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-11-07 00:10:26,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:10:26,216 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-11-07 00:10:26,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:10:26,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2018-11-07 00:10:26,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:10:26,246 INFO L225 Difference]: With dead ends: 5673 [2018-11-07 00:10:26,247 INFO L226 Difference]: Without dead ends: 3698 [2018-11-07 00:10:26,255 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:10:26,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-11-07 00:10:26,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-11-07 00:10:26,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-11-07 00:10:26,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5870 transitions. [2018-11-07 00:10:26,375 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5870 transitions. Word has length 99 [2018-11-07 00:10:26,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:10:26,376 INFO L480 AbstractCegarLoop]: Abstraction has 3687 states and 5870 transitions. [2018-11-07 00:10:26,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:10:26,376 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5870 transitions. [2018-11-07 00:10:26,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-11-07 00:10:26,380 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:10:26,380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:10:26,381 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:10:26,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:10:26,381 INFO L82 PathProgramCache]: Analyzing trace with hash 565598866, now seen corresponding path program 1 times [2018-11-07 00:10:26,381 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:10:26,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:10:26,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:10:26,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:10:26,383 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:10:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:10:26,539 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:10:26,540 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:10:26,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:10:26,540 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:10:26,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:10:26,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:10:26,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:10:26,542 INFO L87 Difference]: Start difference. First operand 3687 states and 5870 transitions. Second operand 5 states. [2018-11-07 00:10:35,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:10:35,945 INFO L93 Difference]: Finished difference Result 10955 states and 17866 transitions. [2018-11-07 00:10:35,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 00:10:35,946 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2018-11-07 00:10:35,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:10:35,989 INFO L225 Difference]: With dead ends: 10955 [2018-11-07 00:10:35,989 INFO L226 Difference]: Without dead ends: 7274 [2018-11-07 00:10:36,005 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:10:36,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7274 states. [2018-11-07 00:10:36,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7274 to 7167. [2018-11-07 00:10:36,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7167 states. [2018-11-07 00:10:36,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7167 states to 7167 states and 10519 transitions. [2018-11-07 00:10:36,198 INFO L78 Accepts]: Start accepts. Automaton has 7167 states and 10519 transitions. Word has length 101 [2018-11-07 00:10:36,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:10:36,198 INFO L480 AbstractCegarLoop]: Abstraction has 7167 states and 10519 transitions. [2018-11-07 00:10:36,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:10:36,199 INFO L276 IsEmpty]: Start isEmpty. Operand 7167 states and 10519 transitions. [2018-11-07 00:10:36,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-11-07 00:10:36,201 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:10:36,202 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:10:36,202 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:10:36,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:10:36,203 INFO L82 PathProgramCache]: Analyzing trace with hash 538164106, now seen corresponding path program 1 times [2018-11-07 00:10:36,203 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:10:36,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:10:36,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:10:36,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:10:36,204 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:10:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:10:36,468 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:10:36,468 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:10:36,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:10:36,469 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:10:36,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:10:36,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:10:36,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:10:36,470 INFO L87 Difference]: Start difference. First operand 7167 states and 10519 transitions. Second operand 4 states. [2018-11-07 00:10:45,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:10:45,181 INFO L93 Difference]: Finished difference Result 27611 states and 43118 transitions. [2018-11-07 00:10:45,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:10:45,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2018-11-07 00:10:45,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:10:45,302 INFO L225 Difference]: With dead ends: 27611 [2018-11-07 00:10:45,302 INFO L226 Difference]: Without dead ends: 20450 [2018-11-07 00:10:45,355 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 [2018-11-07 00:10:45,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20450 states. [2018-11-07 00:10:45,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20450 to 20412. [2018-11-07 00:10:45,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20412 states. [2018-11-07 00:10:45,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20412 states to 20412 states and 28897 transitions. [2018-11-07 00:10:45,885 INFO L78 Accepts]: Start accepts. Automaton has 20412 states and 28897 transitions. Word has length 145 [2018-11-07 00:10:45,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:10:45,886 INFO L480 AbstractCegarLoop]: Abstraction has 20412 states and 28897 transitions. [2018-11-07 00:10:45,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:10:45,886 INFO L276 IsEmpty]: Start isEmpty. Operand 20412 states and 28897 transitions. [2018-11-07 00:10:45,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-11-07 00:10:45,895 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:10:45,895 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:10:45,898 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:10:45,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:10:45,899 INFO L82 PathProgramCache]: Analyzing trace with hash -289846164, now seen corresponding path program 1 times [2018-11-07 00:10:45,899 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:10:45,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:10:45,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:10:45,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:10:45,901 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:10:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:10:46,227 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:10:46,228 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:10:46,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:10:46,228 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:10:46,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:10:46,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:10:46,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:10:46,230 INFO L87 Difference]: Start difference. First operand 20412 states and 28897 transitions. Second operand 4 states. [2018-11-07 00:10:54,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:10:54,388 INFO L93 Difference]: Finished difference Result 44857 states and 63038 transitions. [2018-11-07 00:10:54,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:10:54,389 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 224 [2018-11-07 00:10:54,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:10:54,473 INFO L225 Difference]: With dead ends: 44857 [2018-11-07 00:10:54,474 INFO L226 Difference]: Without dead ends: 24451 [2018-11-07 00:10:54,567 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 [2018-11-07 00:10:54,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24451 states. [2018-11-07 00:10:55,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24451 to 24450. [2018-11-07 00:10:55,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24450 states. [2018-11-07 00:10:55,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24450 states to 24450 states and 30606 transitions. [2018-11-07 00:10:55,053 INFO L78 Accepts]: Start accepts. Automaton has 24450 states and 30606 transitions. Word has length 224 [2018-11-07 00:10:55,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:10:55,054 INFO L480 AbstractCegarLoop]: Abstraction has 24450 states and 30606 transitions. [2018-11-07 00:10:55,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:10:55,055 INFO L276 IsEmpty]: Start isEmpty. Operand 24450 states and 30606 transitions. [2018-11-07 00:10:55,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-11-07 00:10:55,068 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:10:55,069 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:10:55,069 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:10:55,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:10:55,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1286281722, now seen corresponding path program 1 times [2018-11-07 00:10:55,070 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:10:55,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:10:55,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:10:55,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:10:55,071 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:10:55,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:10:55,409 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:10:55,867 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 139 proven. 69 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-11-07 00:10:55,868 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:10:55,868 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:10:55,870 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 332 with the following transitions: [2018-11-07 00:10:55,878 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2759], [2761], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3120], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3297], [3302], [3304], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3363], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 00:10:55,979 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:10:55,980 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:10:58,822 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:11:03,604 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:11:03,605 INFO L272 AbstractInterpreter]: Visited 125 different actions 125 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 00:11:03,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:11:03,621 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:11:10,122 INFO L227 lantSequenceWeakener]: Weakened 300 states. On average, predicates are now at 71.15% of their original sizes. [2018-11-07 00:11:10,123 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:11:11,789 INFO L415 sIntCurrentIteration]: We unified 330 AI predicates to 330 [2018-11-07 00:11:11,789 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:11:11,791 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:11:11,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 00:11:11,791 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:11:11,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 00:11:11,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 00:11:11,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 00:11:11,793 INFO L87 Difference]: Start difference. First operand 24450 states and 30606 transitions. Second operand 11 states. Received shutdown request... [2018-11-07 00:13:29,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 00:13:29,546 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:13:29,551 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:13:29,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:13:29 BoogieIcfgContainer [2018-11-07 00:13:29,552 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:13:29,553 INFO L168 Benchmark]: Toolchain (without parser) took 225876.40 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -851.7 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 00:13:29,554 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-11-07 00:13:29,555 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2574.97 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-11-07 00:13:29,555 INFO L168 Benchmark]: Boogie Procedure Inliner took 398.56 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 821.6 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. [2018-11-07 00:13:29,556 INFO L168 Benchmark]: Boogie Preprocessor took 302.90 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. [2018-11-07 00:13:29,557 INFO L168 Benchmark]: RCFGBuilder took 12123.34 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 151.5 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 47.9 MB). Peak memory consumption was 657.1 MB. Max. memory is 7.1 GB. [2018-11-07 00:13:29,558 INFO L168 Benchmark]: TraceAbstraction took 210470.77 ms. Allocated memory was 2.5 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -55.3 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-07 00:13:29,564 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 2574.97 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 398.56 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 821.6 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 302.90 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12123.34 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 151.5 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 47.9 MB). Peak memory consumption was 657.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210470.77 ms. Allocated memory was 2.5 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -55.3 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 78). Cancelled while BasicCegarLoop was constructing difference of abstraction (24450states) and FLOYD_HOARE automaton (currently 10 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (2956 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 210.3s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 190.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3794 SDtfs, 13895 SDslu, 2499 SDs, 0 SdLazy, 24795 SolverSat, 6221 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 138.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 368 GetRequests, 336 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24450occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.7s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9968298368298366 AbsIntWeakeningRatio, 0.11515151515151516 AbsIntAvgWeakeningVarsNumRemoved, 37.74848484848485 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 1018 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 929 NumberOfCodeBlocks, 929 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 923 ConstructedInterpolants, 0 QuantifiedInterpolants, 406417 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 334/403 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown