java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label07_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:05:08,500 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:05:08,502 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:05:08,515 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:05:08,515 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:05:08,516 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:05:08,517 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:05:08,519 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:05:08,521 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:05:08,522 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:05:08,523 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:05:08,523 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:05:08,524 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:05:08,525 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:05:08,526 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:05:08,527 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:05:08,528 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:05:08,533 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:05:08,539 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:05:08,544 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:05:08,549 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:05:08,551 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:05:08,553 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:05:08,553 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:05:08,553 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:05:08,554 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:05:08,557 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:05:08,558 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:05:08,559 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:05:08,560 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:05:08,560 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:05:08,561 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:05:08,561 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:05:08,561 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:05:08,565 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:05:08,566 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:05:08,567 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 18:05:08,587 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:05:08,587 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:05:08,588 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:05:08,588 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:05:08,588 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:05:08,589 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:05:08,589 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:05:08,589 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:05:08,589 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:05:08,589 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:05:08,590 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:05:08,590 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:05:08,590 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:05:08,591 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:05:08,591 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:05:08,591 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:05:08,591 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:05:08,592 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:05:08,592 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:05:08,592 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:05:08,592 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:05:08,592 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:05:08,593 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:05:08,593 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:05:08,593 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:05:08,593 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:05:08,593 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:05:08,594 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:05:08,594 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:05:08,594 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:05:08,594 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:05:08,594 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:05:08,594 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:05:08,595 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:05:08,596 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:05:08,662 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:05:08,679 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:05:08,683 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:05:08,685 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:05:08,685 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:05:08,686 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label07_false-unreach-call.c [2018-11-07 18:05:08,751 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1155e0ea/01206187232e40698f731aefa920afd3/FLAGe97926762 [2018-11-07 18:05:09,487 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:05:09,488 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label07_false-unreach-call.c [2018-11-07 18:05:09,521 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1155e0ea/01206187232e40698f731aefa920afd3/FLAGe97926762 [2018-11-07 18:05:09,541 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1155e0ea/01206187232e40698f731aefa920afd3 [2018-11-07 18:05:09,553 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:05:09,555 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:05:09,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:05:09,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:05:09,560 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:05:09,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:05:09" (1/1) ... [2018-11-07 18:05:09,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b56b8e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:05:09, skipping insertion in model container [2018-11-07 18:05:09,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:05:09" (1/1) ... [2018-11-07 18:05:09,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:05:09,662 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:05:10,554 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:05:10,559 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:05:10,846 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:05:10,867 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:05:10,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:05:10 WrapperNode [2018-11-07 18:05:10,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:05:10,868 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:05:10,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:05:10,869 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:05:10,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:05:10" (1/1) ... [2018-11-07 18:05:11,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:05:10" (1/1) ... [2018-11-07 18:05:11,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:05:11,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:05:11,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:05:11,096 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:05:11,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:05:10" (1/1) ... [2018-11-07 18:05:11,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:05:10" (1/1) ... [2018-11-07 18:05:11,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:05:10" (1/1) ... [2018-11-07 18:05:11,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:05:10" (1/1) ... [2018-11-07 18:05:11,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:05:10" (1/1) ... [2018-11-07 18:05:11,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:05:10" (1/1) ... [2018-11-07 18:05:11,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:05:10" (1/1) ... [2018-11-07 18:05:11,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:05:11,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:05:11,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:05:11,277 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:05:11,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:05:10" (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 18:05:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:05:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:05:11,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:05:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 18:05:11,346 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 18:05:11,346 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:05:11,346 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:05:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:05:11,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:05:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:05:11,347 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:05:16,726 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:05:16,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:05:16 BoogieIcfgContainer [2018-11-07 18:05:16,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:05:16,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:05:16,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:05:16,731 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:05:16,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:05:09" (1/3) ... [2018-11-07 18:05:16,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e716808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:05:16, skipping insertion in model container [2018-11-07 18:05:16,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:05:10" (2/3) ... [2018-11-07 18:05:16,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e716808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:05:16, skipping insertion in model container [2018-11-07 18:05:16,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:05:16" (3/3) ... [2018-11-07 18:05:16,735 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label07_false-unreach-call.c [2018-11-07 18:05:16,745 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:05:16,754 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:05:16,769 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:05:16,810 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:05:16,810 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:05:16,810 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:05:16,810 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:05:16,810 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:05:16,811 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:05:16,811 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:05:16,811 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:05:16,843 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 18:05:16,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-07 18:05:16,850 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:05:16,851 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:05:16,853 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:05:16,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:05:16,860 INFO L82 PathProgramCache]: Analyzing trace with hash 117084481, now seen corresponding path program 1 times [2018-11-07 18:05:16,863 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:05:16,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:05:16,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:05:16,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:05:16,912 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:05:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:05:17,277 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 18:05:17,282 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 18:05:17,285 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:05:17,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:05:17,285 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:05:17,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:05:17,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:05:17,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:05:17,310 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 18:05:23,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:05:23,575 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-11-07 18:05:23,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:05:23,578 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-11-07 18:05:23,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:05:23,608 INFO L225 Difference]: With dead ends: 1558 [2018-11-07 18:05:23,609 INFO L226 Difference]: Without dead ends: 1114 [2018-11-07 18:05:23,621 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 18:05:23,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-11-07 18:05:23,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 759. [2018-11-07 18:05:23,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2018-11-07 18:05:23,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1355 transitions. [2018-11-07 18:05:23,731 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1355 transitions. Word has length 17 [2018-11-07 18:05:23,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:05:23,731 INFO L480 AbstractCegarLoop]: Abstraction has 759 states and 1355 transitions. [2018-11-07 18:05:23,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:05:23,732 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1355 transitions. [2018-11-07 18:05:23,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-11-07 18:05:23,737 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:05:23,737 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:05:23,738 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:05:23,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:05:23,738 INFO L82 PathProgramCache]: Analyzing trace with hash 932863477, now seen corresponding path program 1 times [2018-11-07 18:05:23,738 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:05:23,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:05:23,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:05:23,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:05:23,740 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:05:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:05:24,001 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:05:24,001 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:05:24,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:05:24,002 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:05:24,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:05:24,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:05:24,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:05:24,004 INFO L87 Difference]: Start difference. First operand 759 states and 1355 transitions. Second operand 4 states. [2018-11-07 18:05:29,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:05:29,191 INFO L93 Difference]: Finished difference Result 2757 states and 5143 transitions. [2018-11-07 18:05:29,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:05:29,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2018-11-07 18:05:29,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:05:29,211 INFO L225 Difference]: With dead ends: 2757 [2018-11-07 18:05:29,212 INFO L226 Difference]: Without dead ends: 2004 [2018-11-07 18:05:29,220 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 18:05:29,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2018-11-07 18:05:29,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1999. [2018-11-07 18:05:29,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1999 states. [2018-11-07 18:05:29,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1999 states to 1999 states and 3239 transitions. [2018-11-07 18:05:29,330 INFO L78 Accepts]: Start accepts. Automaton has 1999 states and 3239 transitions. Word has length 87 [2018-11-07 18:05:29,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:05:29,331 INFO L480 AbstractCegarLoop]: Abstraction has 1999 states and 3239 transitions. [2018-11-07 18:05:29,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:05:29,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1999 states and 3239 transitions. [2018-11-07 18:05:29,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-11-07 18:05:29,350 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:05:29,350 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:05:29,353 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:05:29,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:05:29,354 INFO L82 PathProgramCache]: Analyzing trace with hash 593337787, now seen corresponding path program 1 times [2018-11-07 18:05:29,354 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:05:29,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:05:29,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:05:29,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:05:29,355 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:05:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:05:29,846 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:05:29,846 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:05:29,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 18:05:29,847 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:05:29,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 18:05:29,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 18:05:29,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 18:05:29,849 INFO L87 Difference]: Start difference. First operand 1999 states and 3239 transitions. Second operand 5 states. [2018-11-07 18:05:37,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:05:37,485 INFO L93 Difference]: Finished difference Result 7066 states and 11537 transitions. [2018-11-07 18:05:37,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 18:05:37,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2018-11-07 18:05:37,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:05:37,523 INFO L225 Difference]: With dead ends: 7066 [2018-11-07 18:05:37,523 INFO L226 Difference]: Without dead ends: 5073 [2018-11-07 18:05:37,550 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:05:37,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5073 states. [2018-11-07 18:05:37,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5073 to 4992. [2018-11-07 18:05:37,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4992 states. [2018-11-07 18:05:37,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4992 states to 4992 states and 6705 transitions. [2018-11-07 18:05:37,727 INFO L78 Accepts]: Start accepts. Automaton has 4992 states and 6705 transitions. Word has length 141 [2018-11-07 18:05:37,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:05:37,728 INFO L480 AbstractCegarLoop]: Abstraction has 4992 states and 6705 transitions. [2018-11-07 18:05:37,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 18:05:37,728 INFO L276 IsEmpty]: Start isEmpty. Operand 4992 states and 6705 transitions. [2018-11-07 18:05:37,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-11-07 18:05:37,740 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:05:37,740 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:37,741 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:05:37,741 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:05:37,741 INFO L82 PathProgramCache]: Analyzing trace with hash -662320847, now seen corresponding path program 1 times [2018-11-07 18:05:37,741 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:05:37,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:05:37,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:05:37,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:05:37,743 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:05:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:05:38,564 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 23 proven. 87 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 18:05:38,565 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:05:38,565 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:05:38,566 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 238 with the following transitions: [2018-11-07 18:05:38,568 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [109], [111], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [816], [821], [823], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 18:05:38,617 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:05:38,617 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:05:39,126 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:05:41,185 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:05:41,187 INFO L272 AbstractInterpreter]: Visited 130 different actions 874 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:05:41,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:05:41,233 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:05:42,151 INFO L227 lantSequenceWeakener]: Weakened 63 states. On average, predicates are now at 77.56% of their original sizes. [2018-11-07 18:05:42,152 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:05:44,181 INFO L415 sIntCurrentIteration]: We unified 236 AI predicates to 236 [2018-11-07 18:05:44,181 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:05:44,182 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:05:44,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-11-07 18:05:44,182 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:05:44,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 18:05:44,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 18:05:44,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2018-11-07 18:05:44,184 INFO L87 Difference]: Start difference. First operand 4992 states and 6705 transitions. Second operand 20 states. [2018-11-07 18:06:49,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:06:49,501 INFO L93 Difference]: Finished difference Result 12794 states and 16722 transitions. [2018-11-07 18:06:49,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-07 18:06:49,502 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 237 [2018-11-07 18:06:49,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:06:49,533 INFO L225 Difference]: With dead ends: 12794 [2018-11-07 18:06:49,533 INFO L226 Difference]: Without dead ends: 7808 [2018-11-07 18:06:49,551 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 254 GetRequests, 186 SyntacticMatches, 33 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=282, Invalid=1050, Unknown=0, NotChecked=0, Total=1332 [2018-11-07 18:06:49,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7808 states. [2018-11-07 18:06:49,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7808 to 7323. [2018-11-07 18:06:49,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7323 states. [2018-11-07 18:06:49,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7323 states to 7323 states and 9106 transitions. [2018-11-07 18:06:49,714 INFO L78 Accepts]: Start accepts. Automaton has 7323 states and 9106 transitions. Word has length 237 [2018-11-07 18:06:49,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:06:49,715 INFO L480 AbstractCegarLoop]: Abstraction has 7323 states and 9106 transitions. [2018-11-07 18:06:49,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 18:06:49,715 INFO L276 IsEmpty]: Start isEmpty. Operand 7323 states and 9106 transitions. [2018-11-07 18:06:49,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-11-07 18:06:49,728 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:06:49,728 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:49,729 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:06:49,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:06:49,729 INFO L82 PathProgramCache]: Analyzing trace with hash 515779473, now seen corresponding path program 1 times [2018-11-07 18:06:49,729 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:06:49,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:06:49,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:06:49,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:06:49,734 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:06:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:06:50,504 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 13 proven. 113 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 18:06:50,504 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:06:50,505 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:06:50,505 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 405 with the following transitions: [2018-11-07 18:06:50,506 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [109], [111], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 18:06:50,516 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:06:50,516 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:06:50,666 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:06:51,435 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:06:51,435 INFO L272 AbstractInterpreter]: Visited 283 different actions 1119 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:06:51,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:06:51,445 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:06:52,014 INFO L227 lantSequenceWeakener]: Weakened 401 states. On average, predicates are now at 79.9% of their original sizes. [2018-11-07 18:06:52,015 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:06:52,148 INFO L415 sIntCurrentIteration]: We unified 403 AI predicates to 403 [2018-11-07 18:06:52,148 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:06:52,148 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:06:52,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 17 [2018-11-07 18:06:52,149 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:06:52,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 18:06:52,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 18:06:52,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 18:06:52,151 INFO L87 Difference]: Start difference. First operand 7323 states and 9106 transitions. Second operand 11 states. [2018-11-07 18:07:28,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:07:28,209 INFO L93 Difference]: Finished difference Result 15496 states and 20896 transitions. [2018-11-07 18:07:28,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-07 18:07:28,209 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 404 [2018-11-07 18:07:28,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:07:28,251 INFO L225 Difference]: With dead ends: 15496 [2018-11-07 18:07:28,251 INFO L226 Difference]: Without dead ends: 10510 [2018-11-07 18:07:28,279 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 415 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2018-11-07 18:07:28,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10510 states. [2018-11-07 18:07:28,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10510 to 10467. [2018-11-07 18:07:28,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10467 states. [2018-11-07 18:07:28,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10467 states to 10467 states and 13009 transitions. [2018-11-07 18:07:28,534 INFO L78 Accepts]: Start accepts. Automaton has 10467 states and 13009 transitions. Word has length 404 [2018-11-07 18:07:28,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:07:28,535 INFO L480 AbstractCegarLoop]: Abstraction has 10467 states and 13009 transitions. [2018-11-07 18:07:28,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 18:07:28,537 INFO L276 IsEmpty]: Start isEmpty. Operand 10467 states and 13009 transitions. [2018-11-07 18:07:28,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2018-11-07 18:07:28,557 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:07:28,557 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:07:28,558 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:07:28,558 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:07:28,558 INFO L82 PathProgramCache]: Analyzing trace with hash 978094294, now seen corresponding path program 1 times [2018-11-07 18:07:28,558 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:07:28,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:07:28,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:07:28,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:07:28,559 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:07:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:07:29,119 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2018-11-07 18:07:29,119 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:07:29,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 18:07:29,119 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:07:29,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 18:07:29,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 18:07:29,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 18:07:29,121 INFO L87 Difference]: Start difference. First operand 10467 states and 13009 transitions. Second operand 5 states. [2018-11-07 18:07:32,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:07:32,553 INFO L93 Difference]: Finished difference Result 22386 states and 29522 transitions. [2018-11-07 18:07:32,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 18:07:32,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 477 [2018-11-07 18:07:32,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:07:32,604 INFO L225 Difference]: With dead ends: 22386 [2018-11-07 18:07:32,604 INFO L226 Difference]: Without dead ends: 15182 [2018-11-07 18:07:32,624 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:07:32,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15182 states. [2018-11-07 18:07:32,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15182 to 15078. [2018-11-07 18:07:32,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15078 states. [2018-11-07 18:07:32,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15078 states to 15078 states and 18537 transitions. [2018-11-07 18:07:32,910 INFO L78 Accepts]: Start accepts. Automaton has 15078 states and 18537 transitions. Word has length 477 [2018-11-07 18:07:32,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:07:32,911 INFO L480 AbstractCegarLoop]: Abstraction has 15078 states and 18537 transitions. [2018-11-07 18:07:32,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 18:07:32,911 INFO L276 IsEmpty]: Start isEmpty. Operand 15078 states and 18537 transitions. [2018-11-07 18:07:32,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2018-11-07 18:07:32,940 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:07:32,941 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:32,941 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:07:32,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:07:32,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1210367492, now seen corresponding path program 1 times [2018-11-07 18:07:32,942 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:07:32,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:07:32,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:07:32,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:07:32,943 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:07:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:07:33,663 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 18:07:33,664 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:07:33,664 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:07:33,664 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 533 with the following transitions: [2018-11-07 18:07:33,665 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [109], [111], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [868], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 18:07:33,673 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:07:33,673 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:07:34,411 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:07:36,036 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:07:36,036 INFO L272 AbstractInterpreter]: Visited 284 different actions 1409 times. Merged at 8 different actions 33 times. Never widened. Found 8 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:07:36,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:07:36,074 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:07:36,782 INFO L227 lantSequenceWeakener]: Weakened 529 states. On average, predicates are now at 79.92% of their original sizes. [2018-11-07 18:07:36,783 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:07:36,982 INFO L415 sIntCurrentIteration]: We unified 531 AI predicates to 531 [2018-11-07 18:07:36,982 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:07:36,983 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:07:36,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 18:07:36,983 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:07:36,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 18:07:36,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 18:07:36,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 18:07:36,984 INFO L87 Difference]: Start difference. First operand 15078 states and 18537 transitions. Second operand 11 states. [2018-11-07 18:07:53,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:07:53,865 INFO L93 Difference]: Finished difference Result 30814 states and 39803 transitions. [2018-11-07 18:07:53,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-07 18:07:53,866 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 532 [2018-11-07 18:07:53,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:07:53,923 INFO L225 Difference]: With dead ends: 30814 [2018-11-07 18:07:53,924 INFO L226 Difference]: Without dead ends: 18999 [2018-11-07 18:07:53,954 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 543 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2018-11-07 18:07:53,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18999 states. [2018-11-07 18:07:54,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18999 to 18911. [2018-11-07 18:07:54,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18911 states. [2018-11-07 18:07:54,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18911 states to 18911 states and 23265 transitions. [2018-11-07 18:07:54,309 INFO L78 Accepts]: Start accepts. Automaton has 18911 states and 23265 transitions. Word has length 532 [2018-11-07 18:07:54,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:07:54,311 INFO L480 AbstractCegarLoop]: Abstraction has 18911 states and 23265 transitions. [2018-11-07 18:07:54,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 18:07:54,311 INFO L276 IsEmpty]: Start isEmpty. Operand 18911 states and 23265 transitions. [2018-11-07 18:07:54,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2018-11-07 18:07:54,340 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:07:54,340 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:54,340 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:07:54,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:07:54,341 INFO L82 PathProgramCache]: Analyzing trace with hash -396325229, now seen corresponding path program 1 times [2018-11-07 18:07:54,341 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:07:54,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:07:54,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:07:54,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:07:54,342 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:07:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:07:55,191 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 274 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 18:07:55,191 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:07:55,191 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:07:55,192 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 536 with the following transitions: [2018-11-07 18:07:55,192 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [109], [111], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [880], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 18:07:55,198 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:07:55,198 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:07:55,386 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:07:57,800 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:07:57,800 INFO L272 AbstractInterpreter]: Visited 285 different actions 1980 times. Merged at 8 different actions 55 times. Widened at 1 different actions 2 times. Found 12 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 18:07:57,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:07:57,811 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:07:57,811 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:07:57,811 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:07:57,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:07:57,822 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:07:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:07:58,001 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:07:58,466 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 274 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 18:07:58,466 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:07:58,949 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 274 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Abandoning pump threads because process wont die! [2018-11-07 18:07:59,450 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:07:59,451 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 18:07:59,451 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:07:59,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 18:07:59,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 18:07:59,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 18:07:59,455 INFO L87 Difference]: Start difference. First operand 18911 states and 23265 transitions. Second operand 9 states. [2018-11-07 18:08:08,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:08:08,859 INFO L93 Difference]: Finished difference Result 45498 states and 58603 transitions. [2018-11-07 18:08:08,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 18:08:08,860 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 535 [2018-11-07 18:08:08,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:08:08,995 INFO L225 Difference]: With dead ends: 45498 [2018-11-07 18:08:08,996 INFO L226 Difference]: Without dead ends: 28924 [2018-11-07 18:08:09,134 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1099 GetRequests, 1077 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2018-11-07 18:08:09,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28924 states. [2018-11-07 18:08:09,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28924 to 27703. [2018-11-07 18:08:09,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27703 states. [2018-11-07 18:08:09,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27703 states to 27703 states and 32346 transitions. [2018-11-07 18:08:09,850 INFO L78 Accepts]: Start accepts. Automaton has 27703 states and 32346 transitions. Word has length 535 [2018-11-07 18:08:09,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:08:09,851 INFO L480 AbstractCegarLoop]: Abstraction has 27703 states and 32346 transitions. [2018-11-07 18:08:09,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 18:08:09,852 INFO L276 IsEmpty]: Start isEmpty. Operand 27703 states and 32346 transitions. [2018-11-07 18:08:09,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2018-11-07 18:08:09,898 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:08:09,898 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:08:09,898 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:08:09,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:08:09,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1681220267, now seen corresponding path program 1 times [2018-11-07 18:08:09,899 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:08:09,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:09,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:08:09,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:09,901 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:08:10,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:08:10,456 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2018-11-07 18:08:10,456 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:08:10,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:08:10,456 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:08:10,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:08:10,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:08:10,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:08:10,458 INFO L87 Difference]: Start difference. First operand 27703 states and 32346 transitions. Second operand 3 states. [2018-11-07 18:08:14,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:08:14,428 INFO L93 Difference]: Finished difference Result 53422 states and 64341 transitions. [2018-11-07 18:08:14,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:08:14,428 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 558 [2018-11-07 18:08:14,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:08:14,542 INFO L225 Difference]: With dead ends: 53422 [2018-11-07 18:08:14,542 INFO L226 Difference]: Without dead ends: 28986 [2018-11-07 18:08:14,586 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:08:14,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28986 states. [2018-11-07 18:08:14,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28986 to 28366. [2018-11-07 18:08:14,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28366 states. [2018-11-07 18:08:15,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28366 states to 28366 states and 33575 transitions. [2018-11-07 18:08:15,004 INFO L78 Accepts]: Start accepts. Automaton has 28366 states and 33575 transitions. Word has length 558 [2018-11-07 18:08:15,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:08:15,005 INFO L480 AbstractCegarLoop]: Abstraction has 28366 states and 33575 transitions. [2018-11-07 18:08:15,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:08:15,005 INFO L276 IsEmpty]: Start isEmpty. Operand 28366 states and 33575 transitions. [2018-11-07 18:08:15,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2018-11-07 18:08:15,037 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:08:15,038 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:08:15,038 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:08:15,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:08:15,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1050922133, now seen corresponding path program 1 times [2018-11-07 18:08:15,040 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:08:15,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:15,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:08:15,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:15,041 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:08:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:08:15,878 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 223 proven. 85 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2018-11-07 18:08:15,878 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:08:15,878 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:08:15,879 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 606 with the following transitions: [2018-11-07 18:08:15,879 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [109], [111], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [644], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [880], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 18:08:15,888 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:08:15,889 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:08:15,997 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:08:17,759 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:08:17,759 INFO L272 AbstractInterpreter]: Visited 285 different actions 1135 times. Merged at 7 different actions 28 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 18:08:17,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:08:17,799 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:08:18,906 INFO L227 lantSequenceWeakener]: Weakened 602 states. On average, predicates are now at 80.02% of their original sizes. [2018-11-07 18:08:18,906 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:08:19,500 INFO L415 sIntCurrentIteration]: We unified 604 AI predicates to 604 [2018-11-07 18:08:19,500 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:08:19,501 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:08:19,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 18:08:19,501 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:08:19,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 18:08:19,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 18:08:19,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-07 18:08:19,503 INFO L87 Difference]: Start difference. First operand 28366 states and 33575 transitions. Second operand 10 states. [2018-11-07 18:08:29,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:08:29,788 INFO L93 Difference]: Finished difference Result 58091 states and 68813 transitions. [2018-11-07 18:08:29,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 18:08:29,788 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 605 [2018-11-07 18:08:29,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:08:29,875 INFO L225 Difference]: With dead ends: 58091 [2018-11-07 18:08:29,875 INFO L226 Difference]: Without dead ends: 32686 [2018-11-07 18:08:29,915 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 611 GetRequests, 596 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-11-07 18:08:29,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32686 states. [2018-11-07 18:08:30,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32686 to 32668. [2018-11-07 18:08:30,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32668 states. [2018-11-07 18:08:30,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32668 states to 32668 states and 38162 transitions. [2018-11-07 18:08:30,386 INFO L78 Accepts]: Start accepts. Automaton has 32668 states and 38162 transitions. Word has length 605 [2018-11-07 18:08:30,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:08:30,387 INFO L480 AbstractCegarLoop]: Abstraction has 32668 states and 38162 transitions. [2018-11-07 18:08:30,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 18:08:30,387 INFO L276 IsEmpty]: Start isEmpty. Operand 32668 states and 38162 transitions. [2018-11-07 18:08:30,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2018-11-07 18:08:30,426 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:08:30,426 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 18:08:30,427 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:08:30,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:08:30,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1907686846, now seen corresponding path program 1 times [2018-11-07 18:08:30,427 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:08:30,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:30,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:08:30,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:08:30,433 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:08:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:08:31,145 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 414 proven. 2 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-11-07 18:08:31,145 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:08:31,145 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:08:31,145 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 665 with the following transitions: [2018-11-07 18:08:31,146 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [109], [111], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [857], [862], [864], [865], [869], [873], [877], [880], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 18:08:31,150 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:08:31,151 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:08:31,291 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:08:33,125 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:08:33,125 INFO L272 AbstractInterpreter]: Visited 288 different actions 1724 times. Merged at 9 different actions 59 times. Widened at 1 different actions 2 times. Found 14 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 18:08:33,135 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:08:33,135 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:08:33,135 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:08:33,135 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:08:33,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:08:33,145 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:08:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:08:33,346 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:08:33,663 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 414 proven. 2 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-11-07 18:08:33,663 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-11-07 18:08:37,014 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 414 proven. 2 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-11-07 18:08:37,035 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:08:37,035 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2018-11-07 18:08:37,035 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:08:37,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 18:08:37,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 18:08:37,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-07 18:08:37,038 INFO L87 Difference]: Start difference. First operand 32668 states and 38162 transitions. Second operand 8 states. [2018-11-07 18:08:37,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-07 18:08:37,040 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:08:37,045 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:08:37,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:08:37 BoogieIcfgContainer [2018-11-07 18:08:37,046 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:08:37,047 INFO L168 Benchmark]: Toolchain (without parser) took 207492.75 ms. Allocated memory was 1.5 GB in the beginning and 5.2 GB in the end (delta: 3.6 GB). Free memory was 1.4 GB in the beginning and 4.5 GB in the end (delta: -3.1 GB). Peak memory consumption was 559.0 MB. Max. memory is 7.1 GB. [2018-11-07 18:08:37,048 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 18:08:37,048 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1312.20 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: 108.5 MB). Peak memory consumption was 108.5 MB. Max. memory is 7.1 GB. [2018-11-07 18:08:37,049 INFO L168 Benchmark]: Boogie Procedure Inliner took 227.34 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -915.2 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-07 18:08:37,050 INFO L168 Benchmark]: Boogie Preprocessor took 180.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2018-11-07 18:08:37,051 INFO L168 Benchmark]: RCFGBuilder took 5450.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 290.6 MB). Peak memory consumption was 290.6 MB. Max. memory is 7.1 GB. [2018-11-07 18:08:37,052 INFO L168 Benchmark]: TraceAbstraction took 200318.20 ms. Allocated memory was 2.3 GB in the beginning and 5.2 GB in the end (delta: 2.9 GB). Free memory was 1.9 GB in the beginning and 4.5 GB in the end (delta: -2.6 GB). Peak memory consumption was 293.6 MB. Max. memory is 7.1 GB. [2018-11-07 18:08:37,057 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1312.20 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: 108.5 MB). Peak memory consumption was 108.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 227.34 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -915.2 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 180.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5450.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 290.6 MB). Peak memory consumption was 290.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 200318.20 ms. Allocated memory was 2.3 GB in the beginning and 5.2 GB in the end (delta: 2.9 GB). Free memory was 1.9 GB in the beginning and 4.5 GB in the end (delta: -2.6 GB). Peak memory consumption was 293.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 37]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 37). Cancelled while BasicCegarLoop was constructing difference of abstraction (32668states) and FLOYD_HOARE automaton (currently 2 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 200.2s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 165.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3111 SDtfs, 17597 SDslu, 3354 SDs, 0 SdLazy, 32127 SolverSat, 4510 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 77.5s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 4290 GetRequests, 4118 SyntacticMatches, 38 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 891 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32668occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.5s AbstIntTime, 6 AbstIntIterations, 4 AbstIntStrong, 0.9978191026469759 AbsIntWeakeningRatio, 0.0693348365276212 AbsIntAvgWeakeningVarsNumRemoved, 18.72153325817362 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 3020 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 9.2s InterpolantComputationTime, 5456 NumberOfCodeBlocks, 5456 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 6640 ConstructedInterpolants, 0 QuantifiedInterpolants, 8472224 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1683 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 5271/5570 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown