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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label49_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 12:36:50,502 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 12:36:50,507 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 12:36:50,523 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 12:36:50,524 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 12:36:50,526 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 12:36:50,527 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 12:36:50,529 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 12:36:50,530 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 12:36:50,531 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 12:36:50,532 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 12:36:50,532 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 12:36:50,533 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 12:36:50,534 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 12:36:50,535 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 12:36:50,536 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 12:36:50,537 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 12:36:50,539 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 12:36:50,541 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 12:36:50,543 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 12:36:50,544 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 12:36:50,545 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 12:36:50,547 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 12:36:50,554 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 12:36:50,554 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 12:36:50,555 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 12:36:50,556 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 12:36:50,556 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.epf [2018-11-07 12:36:50,577 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 12:36:50,577 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 12:36:50,578 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 12:36:50,579 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 12:36:50,579 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 12:36:50,579 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 12:36:50,579 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 12:36:50,579 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 12:36:50,580 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 12:36:50,580 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 12:36:50,580 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 12:36:50,580 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 12:36:50,581 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 12:36:50,581 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 12:36:50,581 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 12:36:50,582 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 12:36:50,582 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 12:36:50,582 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 12:36:50,582 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 12:36:50,582 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 12:36:50,582 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 12:36:50,583 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 12:36:50,583 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 12:36:50,583 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 12:36:50,583 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 12:36:50,583 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 12:36:50,584 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 12:36:50,584 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 12:36:50,584 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 12:36:50,584 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 12:36:50,585 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 12:36:50,585 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 12:36:50,585 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 12:36:50,585 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 12:36:50,639 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 12:36:50,653 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 12:36:50,658 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 12:36:50,659 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 12:36:50,660 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 12:36:50,661 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label49_false-unreach-call.c [2018-11-07 12:36:50,728 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dbb2cc35/ce7f34f7620e43319a9fc94e7936e52a/FLAGa8b13f998 [2018-11-07 12:36:51,505 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 12:36:51,506 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label49_false-unreach-call.c [2018-11-07 12:36:51,534 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dbb2cc35/ce7f34f7620e43319a9fc94e7936e52a/FLAGa8b13f998 [2018-11-07 12:36:51,551 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dbb2cc35/ce7f34f7620e43319a9fc94e7936e52a [2018-11-07 12:36:51,562 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 12:36:51,564 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 12:36:51,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 12:36:51,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 12:36:51,569 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 12:36:51,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:36:51" (1/1) ... [2018-11-07 12:36:51,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56927dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:51, skipping insertion in model container [2018-11-07 12:36:51,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:36:51" (1/1) ... [2018-11-07 12:36:51,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 12:36:51,724 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 12:36:52,774 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:36:52,778 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 12:36:53,228 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:36:53,255 INFO L193 MainTranslator]: Completed translation [2018-11-07 12:36:53,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:53 WrapperNode [2018-11-07 12:36:53,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 12:36:53,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 12:36:53,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 12:36:53,257 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 12:36:53,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:53" (1/1) ... [2018-11-07 12:36:53,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:53" (1/1) ... [2018-11-07 12:36:53,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 12:36:53,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 12:36:53,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 12:36:53,565 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 12:36:53,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:53" (1/1) ... [2018-11-07 12:36:53,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:53" (1/1) ... [2018-11-07 12:36:53,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:53" (1/1) ... [2018-11-07 12:36:53,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:53" (1/1) ... [2018-11-07 12:36:53,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:53" (1/1) ... [2018-11-07 12:36:53,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:53" (1/1) ... [2018-11-07 12:36:53,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:53" (1/1) ... [2018-11-07 12:36:53,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 12:36:53,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 12:36:53,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 12:36:53,791 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 12:36:53,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:53" (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 12:36:53,861 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 12:36:53,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 12:36:53,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 12:36:53,862 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 12:36:53,862 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 12:36:53,863 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 12:36:53,863 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 12:36:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 12:36:53,864 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 12:36:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 12:36:53,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 12:36:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 12:36:53,865 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 12:37:02,126 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 12:37:02,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:37:02 BoogieIcfgContainer [2018-11-07 12:37:02,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 12:37:02,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 12:37:02,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 12:37:02,131 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 12:37:02,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:36:51" (1/3) ... [2018-11-07 12:37:02,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51cf9e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:37:02, skipping insertion in model container [2018-11-07 12:37:02,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:53" (2/3) ... [2018-11-07 12:37:02,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51cf9e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:37:02, skipping insertion in model container [2018-11-07 12:37:02,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:37:02" (3/3) ... [2018-11-07 12:37:02,135 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label49_false-unreach-call.c [2018-11-07 12:37:02,145 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 12:37:02,155 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 12:37:02,172 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 12:37:02,221 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 12:37:02,222 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 12:37:02,222 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 12:37:02,222 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 12:37:02,222 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 12:37:02,222 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 12:37:02,223 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 12:37:02,223 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 12:37:02,274 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 12:37:02,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-07 12:37:02,284 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:37:02,285 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 12:37:02,287 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:37:02,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:37:02,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1316717375, now seen corresponding path program 1 times [2018-11-07 12:37:02,294 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:37:02,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:37:02,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:37:02,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:37:02,342 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:37:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:37:02,738 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 12:37:02,858 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 12:37:02,860 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:37:02,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 12:37:02,861 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:37:02,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 12:37:02,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 12:37:02,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 12:37:02,888 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 12:37:08,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:37:08,980 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 12:37:08,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 12:37:08,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-11-07 12:37:08,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:37:09,028 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 12:37:09,029 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 12:37:09,045 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 12:37:09,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 12:37:09,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 12:37:09,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 12:37:09,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2800 transitions. [2018-11-07 12:37:09,193 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2800 transitions. Word has length 29 [2018-11-07 12:37:09,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:37:09,193 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2800 transitions. [2018-11-07 12:37:09,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 12:37:09,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2800 transitions. [2018-11-07 12:37:09,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-11-07 12:37:09,201 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:37:09,201 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 12:37:09,202 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:37:09,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:37:09,202 INFO L82 PathProgramCache]: Analyzing trace with hash -926738512, now seen corresponding path program 1 times [2018-11-07 12:37:09,202 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:37:09,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:37:09,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:37:09,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:37:09,206 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:37:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:37:09,444 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 12:37:09,444 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:37:09,444 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 12:37:09,445 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:37:09,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 12:37:09,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 12:37:09,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 12:37:09,447 INFO L87 Difference]: Start difference. First operand 1474 states and 2800 transitions. Second operand 5 states. [2018-11-07 12:37:17,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:37:17,248 INFO L93 Difference]: Finished difference Result 4419 states and 8483 transitions. [2018-11-07 12:37:17,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:37:17,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2018-11-07 12:37:17,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:37:17,279 INFO L225 Difference]: With dead ends: 4419 [2018-11-07 12:37:17,280 INFO L226 Difference]: Without dead ends: 2951 [2018-11-07 12:37:17,285 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 12:37:17,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-11-07 12:37:17,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-11-07 12:37:17,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-11-07 12:37:17,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 5205 transitions. [2018-11-07 12:37:17,405 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 5205 transitions. Word has length 99 [2018-11-07 12:37:17,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:37:17,406 INFO L480 AbstractCegarLoop]: Abstraction has 2925 states and 5205 transitions. [2018-11-07 12:37:17,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 12:37:17,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 5205 transitions. [2018-11-07 12:37:17,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-11-07 12:37:17,410 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:37:17,410 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] [2018-11-07 12:37:17,411 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:37:17,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:37:17,411 INFO L82 PathProgramCache]: Analyzing trace with hash -730565675, now seen corresponding path program 1 times [2018-11-07 12:37:17,411 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:37:17,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:37:17,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:37:17,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:37:17,416 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:37:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:37:17,665 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 12:37:17,665 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:37:17,666 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 12:37:17,666 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:37:17,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 12:37:17,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 12:37:17,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 12:37:17,667 INFO L87 Difference]: Start difference. First operand 2925 states and 5205 transitions. Second operand 5 states. [2018-11-07 12:37:24,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:37:24,058 INFO L93 Difference]: Finished difference Result 7345 states and 13001 transitions. [2018-11-07 12:37:24,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:37:24,067 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2018-11-07 12:37:24,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:37:24,101 INFO L225 Difference]: With dead ends: 7345 [2018-11-07 12:37:24,101 INFO L226 Difference]: Without dead ends: 4426 [2018-11-07 12:37:24,111 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 12:37:24,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2018-11-07 12:37:24,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 4391. [2018-11-07 12:37:24,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4391 states. [2018-11-07 12:37:24,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 6473 transitions. [2018-11-07 12:37:24,267 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 6473 transitions. Word has length 100 [2018-11-07 12:37:24,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:37:24,270 INFO L480 AbstractCegarLoop]: Abstraction has 4391 states and 6473 transitions. [2018-11-07 12:37:24,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 12:37:24,270 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 6473 transitions. [2018-11-07 12:37:24,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-07 12:37:24,279 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:37:24,279 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] [2018-11-07 12:37:24,279 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:37:24,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:37:24,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1316608327, now seen corresponding path program 1 times [2018-11-07 12:37:24,280 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:37:24,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:37:24,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:37:24,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:37:24,282 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:37:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:37:24,435 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 12:37:24,436 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:37:24,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 12:37:24,436 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:37:24,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 12:37:24,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 12:37:24,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 12:37:24,437 INFO L87 Difference]: Start difference. First operand 4391 states and 6473 transitions. Second operand 5 states. [2018-11-07 12:37:33,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:37:33,721 INFO L93 Difference]: Finished difference Result 14805 states and 21963 transitions. [2018-11-07 12:37:33,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 12:37:33,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2018-11-07 12:37:33,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:37:33,776 INFO L225 Difference]: With dead ends: 14805 [2018-11-07 12:37:33,776 INFO L226 Difference]: Without dead ends: 10420 [2018-11-07 12:37:33,799 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 [2018-11-07 12:37:33,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10420 states. [2018-11-07 12:37:34,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10420 to 10273. [2018-11-07 12:37:34,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10273 states. [2018-11-07 12:37:34,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10273 states to 10273 states and 13611 transitions. [2018-11-07 12:37:34,069 INFO L78 Accepts]: Start accepts. Automaton has 10273 states and 13611 transitions. Word has length 102 [2018-11-07 12:37:34,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:37:34,070 INFO L480 AbstractCegarLoop]: Abstraction has 10273 states and 13611 transitions. [2018-11-07 12:37:34,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 12:37:34,070 INFO L276 IsEmpty]: Start isEmpty. Operand 10273 states and 13611 transitions. [2018-11-07 12:37:34,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-11-07 12:37:34,072 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:37:34,072 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] [2018-11-07 12:37:34,072 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:37:34,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:37:34,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1891367592, now seen corresponding path program 1 times [2018-11-07 12:37:34,073 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:37:34,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:37:34,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:37:34,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:37:34,074 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:37:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:37:34,246 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 12:37:34,246 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:37:34,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 12:37:34,246 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:37:34,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 12:37:34,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 12:37:34,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 12:37:34,248 INFO L87 Difference]: Start difference. First operand 10273 states and 13611 transitions. Second operand 4 states. [2018-11-07 12:37:41,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:37:41,359 INFO L93 Difference]: Finished difference Result 38239 states and 52371 transitions. [2018-11-07 12:37:41,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 12:37:41,359 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2018-11-07 12:37:41,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:37:41,480 INFO L225 Difference]: With dead ends: 38239 [2018-11-07 12:37:41,480 INFO L226 Difference]: Without dead ends: 27972 [2018-11-07 12:37:41,542 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 12:37:41,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27972 states. [2018-11-07 12:37:42,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27972 to 27969. [2018-11-07 12:37:42,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27969 states. [2018-11-07 12:37:42,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27969 states to 27969 states and 35186 transitions. [2018-11-07 12:37:42,163 INFO L78 Accepts]: Start accepts. Automaton has 27969 states and 35186 transitions. Word has length 127 [2018-11-07 12:37:42,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:37:42,163 INFO L480 AbstractCegarLoop]: Abstraction has 27969 states and 35186 transitions. [2018-11-07 12:37:42,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 12:37:42,164 INFO L276 IsEmpty]: Start isEmpty. Operand 27969 states and 35186 transitions. [2018-11-07 12:37:42,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-11-07 12:37:42,199 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:37:42,199 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:37:42,199 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:37:42,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:37:42,200 INFO L82 PathProgramCache]: Analyzing trace with hash 444340843, now seen corresponding path program 1 times [2018-11-07 12:37:42,200 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:37:42,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:37:42,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:37:42,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:37:42,202 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:37:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:37:42,663 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 141 proven. 71 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-11-07 12:37:42,664 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:37:42,664 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:37:42,665 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 347 with the following transitions: [2018-11-07 12:37:42,668 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1755], [1757], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2388], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 12:37:42,733 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:37:42,733 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 12:37:43,484 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 12:37:43,486 INFO L272 AbstractInterpreter]: Visited 144 different actions 144 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 12:37:43,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:37:43,528 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 12:37:44,234 INFO L227 lantSequenceWeakener]: Weakened 334 states. On average, predicates are now at 77.43% of their original sizes. [2018-11-07 12:37:44,235 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 12:37:44,613 INFO L415 sIntCurrentIteration]: We unified 345 AI predicates to 345 [2018-11-07 12:37:44,614 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 12:37:44,615 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 12:37:44,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-11-07 12:37:44,615 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:37:44,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 12:37:44,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 12:37:44,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 12:37:44,617 INFO L87 Difference]: Start difference. First operand 27969 states and 35186 transitions. Second operand 7 states. [2018-11-07 12:37:55,018 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 12:40:56,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:40:56,843 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 12:40:56,848 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 12:40:56,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:40:56 BoogieIcfgContainer [2018-11-07 12:40:56,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 12:40:56,850 INFO L168 Benchmark]: Toolchain (without parser) took 245287.20 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -321.1 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-07 12:40:56,851 INFO L168 Benchmark]: CDTParser took 0.21 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 12:40:56,852 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1691.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-07 12:40:56,853 INFO L168 Benchmark]: Boogie Procedure Inliner took 307.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -956.9 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. [2018-11-07 12:40:56,854 INFO L168 Benchmark]: Boogie Preprocessor took 225.31 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2018-11-07 12:40:56,855 INFO L168 Benchmark]: RCFGBuilder took 8336.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 524.2 MB). Peak memory consumption was 524.2 MB. Max. memory is 7.1 GB. [2018-11-07 12:40:56,857 INFO L168 Benchmark]: TraceAbstraction took 234721.31 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 988.8 MB). Free memory was 1.7 GB in the beginning and 1.7 GB in the end (delta: -50.6 MB). Peak memory consumption was 938.2 MB. Max. memory is 7.1 GB. [2018-11-07 12:40:56,862 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1691.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 307.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -956.9 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 225.31 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8336.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 524.2 MB). Peak memory consumption was 524.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234721.31 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 988.8 MB). Free memory was 1.7 GB in the beginning and 1.7 GB in the end (delta: -50.6 MB). Peak memory consumption was 938.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 75). Cancelled while BasicCegarLoop was constructing difference of abstraction (27969states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (17576 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 234.6s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 229.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 957 SDtfs, 11580 SDslu, 849 SDs, 0 SdLazy, 20414 SolverSat, 5804 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 204.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 383 GetRequests, 352 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27969occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.8s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9978285965242489 AbsIntWeakeningRatio, 0.0927536231884058 AbsIntAvgWeakeningVarsNumRemoved, 18.292753623188407 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 211 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 803 NumberOfCodeBlocks, 803 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 797 ConstructedInterpolants, 0 QuantifiedInterpolants, 272487 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 334/405 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown