java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label32_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 11:56:46,486 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 11:56:46,488 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 11:56:46,500 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 11:56:46,500 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 11:56:46,502 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 11:56:46,503 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 11:56:46,505 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 11:56:46,506 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 11:56:46,507 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 11:56:46,508 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 11:56:46,509 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 11:56:46,510 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 11:56:46,511 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 11:56:46,512 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 11:56:46,513 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 11:56:46,513 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 11:56:46,515 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 11:56:46,517 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 11:56:46,519 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 11:56:46,520 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 11:56:46,521 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 11:56:46,524 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 11:56:46,524 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 11:56:46,524 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 11:56:46,525 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 11:56:46,526 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 11:56:46,527 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 11:56:46,528 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 11:56:46,529 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 11:56:46,529 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 11:56:46,530 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 11:56:46,530 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 11:56:46,531 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 11:56:46,532 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 11:56:46,532 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 11:56:46,533 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 11:56:46,548 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 11:56:46,549 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 11:56:46,550 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 11:56:46,550 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 11:56:46,550 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 11:56:46,550 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 11:56:46,550 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 11:56:46,551 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 11:56:46,551 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 11:56:46,551 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 11:56:46,551 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 11:56:46,551 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 11:56:46,552 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 11:56:46,552 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 11:56:46,553 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 11:56:46,553 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 11:56:46,553 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 11:56:46,553 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 11:56:46,553 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 11:56:46,554 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 11:56:46,554 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 11:56:46,554 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 11:56:46,554 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 11:56:46,555 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 11:56:46,555 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 11:56:46,555 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 11:56:46,555 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 11:56:46,555 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 11:56:46,555 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 11:56:46,556 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 11:56:46,556 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 11:56:46,556 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 11:56:46,556 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 11:56:46,556 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 11:56:46,601 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 11:56:46,614 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 11:56:46,618 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 11:56:46,619 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 11:56:46,620 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 11:56:46,621 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label32_false-unreach-call.c [2018-11-07 11:56:46,682 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f39b4d436/469b4c7ebed044fba167ed9b8dc98f35/FLAG8e3e3dc34 [2018-11-07 11:56:47,533 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 11:56:47,534 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label32_false-unreach-call.c [2018-11-07 11:56:47,583 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f39b4d436/469b4c7ebed044fba167ed9b8dc98f35/FLAG8e3e3dc34 [2018-11-07 11:56:47,602 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f39b4d436/469b4c7ebed044fba167ed9b8dc98f35 [2018-11-07 11:56:47,616 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 11:56:47,619 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 11:56:47,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 11:56:47,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 11:56:47,628 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 11:56:47,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:56:47" (1/1) ... [2018-11-07 11:56:47,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c54e251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:56:47, skipping insertion in model container [2018-11-07 11:56:47,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:56:47" (1/1) ... [2018-11-07 11:56:47,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 11:56:47,851 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 11:56:49,340 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 11:56:49,345 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 11:56:50,153 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 11:56:50,197 INFO L193 MainTranslator]: Completed translation [2018-11-07 11:56:50,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:56:50 WrapperNode [2018-11-07 11:56:50,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 11:56:50,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 11:56:50,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 11:56:50,199 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 11:56:50,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:56:50" (1/1) ... [2018-11-07 11:56:50,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:56:50" (1/1) ... [2018-11-07 11:56:50,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 11:56:50,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 11:56:50,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 11:56:50,581 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 11:56:50,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:56:50" (1/1) ... [2018-11-07 11:56:50,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:56:50" (1/1) ... [2018-11-07 11:56:50,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:56:50" (1/1) ... [2018-11-07 11:56:50,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:56:50" (1/1) ... [2018-11-07 11:56:50,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:56:50" (1/1) ... [2018-11-07 11:56:50,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:56:50" (1/1) ... [2018-11-07 11:56:50,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:56:50" (1/1) ... [2018-11-07 11:56:50,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 11:56:50,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 11:56:50,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 11:56:50,946 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 11:56:50,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:56:50" (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 11:56:51,025 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 11:56:51,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 11:56:51,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 11:56:51,026 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 11:56:51,026 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 11:56:51,027 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 11:56:51,027 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 11:56:51,027 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 11:56:51,027 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 11:56:51,027 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 11:56:51,028 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 11:56:51,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 11:56:51,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 11:56:51,029 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 11:56:51,030 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 11:57:01,621 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 11:57:01,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:57:01 BoogieIcfgContainer [2018-11-07 11:57:01,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 11:57:01,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 11:57:01,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 11:57:01,626 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 11:57:01,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:56:47" (1/3) ... [2018-11-07 11:57:01,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a05e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:57:01, skipping insertion in model container [2018-11-07 11:57:01,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:56:50" (2/3) ... [2018-11-07 11:57:01,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a05e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:57:01, skipping insertion in model container [2018-11-07 11:57:01,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:57:01" (3/3) ... [2018-11-07 11:57:01,630 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label32_false-unreach-call.c [2018-11-07 11:57:01,640 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 11:57:01,650 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 11:57:01,665 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 11:57:01,715 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 11:57:01,716 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 11:57:01,716 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 11:57:01,716 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 11:57:01,716 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 11:57:01,716 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 11:57:01,717 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 11:57:01,717 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 11:57:01,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 11:57:01,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-07 11:57:01,770 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:57:01,771 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 11:57:01,774 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:57:01,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:57:01,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1656413677, now seen corresponding path program 1 times [2018-11-07 11:57:01,783 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:57:01,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:57:01,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:57:01,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:57:01,839 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:57:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:57:02,153 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 11:57:02,258 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 11:57:02,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:57:02,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 11:57:02,261 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:57:02,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 11:57:02,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 11:57:02,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 11:57:02,289 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-07 11:57:11,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:57:11,910 INFO L93 Difference]: Finished difference Result 3093 states and 5715 transitions. [2018-11-07 11:57:11,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 11:57:11,912 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-11-07 11:57:11,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:57:11,949 INFO L225 Difference]: With dead ends: 3093 [2018-11-07 11:57:11,950 INFO L226 Difference]: Without dead ends: 1971 [2018-11-07 11:57:11,962 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 11:57:11,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2018-11-07 11:57:12,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1957. [2018-11-07 11:57:12,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2018-11-07 11:57:12,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3535 transitions. [2018-11-07 11:57:12,129 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3535 transitions. Word has length 15 [2018-11-07 11:57:12,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:57:12,129 INFO L480 AbstractCegarLoop]: Abstraction has 1957 states and 3535 transitions. [2018-11-07 11:57:12,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 11:57:12,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3535 transitions. [2018-11-07 11:57:12,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-11-07 11:57:12,135 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:57:12,136 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 11:57:12,136 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:57:12,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:57:12,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1180844236, now seen corresponding path program 1 times [2018-11-07 11:57:12,137 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:57:12,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:57:12,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:57:12,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:57:12,139 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:57:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:57:12,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:57:12,565 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:57:12,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 11:57:12,565 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:57:12,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 11:57:12,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 11:57:12,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 11:57:12,568 INFO L87 Difference]: Start difference. First operand 1957 states and 3535 transitions. Second operand 6 states. [2018-11-07 11:57:27,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:57:27,046 INFO L93 Difference]: Finished difference Result 5627 states and 10356 transitions. [2018-11-07 11:57:27,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 11:57:27,049 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2018-11-07 11:57:27,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:57:27,074 INFO L225 Difference]: With dead ends: 5627 [2018-11-07 11:57:27,074 INFO L226 Difference]: Without dead ends: 3676 [2018-11-07 11:57:27,082 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 11:57:27,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2018-11-07 11:57:27,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 3643. [2018-11-07 11:57:27,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3643 states. [2018-11-07 11:57:27,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 5987 transitions. [2018-11-07 11:57:27,203 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 5987 transitions. Word has length 98 [2018-11-07 11:57:27,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:57:27,204 INFO L480 AbstractCegarLoop]: Abstraction has 3643 states and 5987 transitions. [2018-11-07 11:57:27,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 11:57:27,204 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 5987 transitions. [2018-11-07 11:57:27,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-07 11:57:27,211 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:57:27,212 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 11:57:27,212 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:57:27,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:57:27,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1396028292, now seen corresponding path program 1 times [2018-11-07 11:57:27,212 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:57:27,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:57:27,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:57:27,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:57:27,217 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:57:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:57:27,653 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:57:27,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:57:27,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 11:57:27,654 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:57:27,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 11:57:27,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 11:57:27,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 11:57:27,655 INFO L87 Difference]: Start difference. First operand 3643 states and 5987 transitions. Second operand 5 states. [2018-11-07 11:57:38,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:57:38,924 INFO L93 Difference]: Finished difference Result 10947 states and 18497 transitions. [2018-11-07 11:57:38,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 11:57:38,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-11-07 11:57:38,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:57:38,980 INFO L225 Difference]: With dead ends: 10947 [2018-11-07 11:57:38,981 INFO L226 Difference]: Without dead ends: 7310 [2018-11-07 11:57:38,996 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 11:57:39,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7310 states. [2018-11-07 11:57:39,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7310 to 7122. [2018-11-07 11:57:39,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7122 states. [2018-11-07 11:57:39,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7122 states to 7122 states and 10912 transitions. [2018-11-07 11:57:39,224 INFO L78 Accepts]: Start accepts. Automaton has 7122 states and 10912 transitions. Word has length 114 [2018-11-07 11:57:39,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:57:39,225 INFO L480 AbstractCegarLoop]: Abstraction has 7122 states and 10912 transitions. [2018-11-07 11:57:39,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 11:57:39,225 INFO L276 IsEmpty]: Start isEmpty. Operand 7122 states and 10912 transitions. [2018-11-07 11:57:39,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-11-07 11:57:39,229 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:57:39,230 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 11:57:39,230 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:57:39,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:57:39,231 INFO L82 PathProgramCache]: Analyzing trace with hash -696567544, now seen corresponding path program 1 times [2018-11-07 11:57:39,231 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:57:39,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:57:39,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:57:39,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:57:39,232 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:57:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:57:39,575 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 11:57:39,998 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:57:39,998 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:57:39,999 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 11:57:39,999 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:57:39,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 11:57:40,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 11:57:40,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 11:57:40,001 INFO L87 Difference]: Start difference. First operand 7122 states and 10912 transitions. Second operand 6 states. [2018-11-07 11:57:52,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:57:52,210 INFO L93 Difference]: Finished difference Result 19748 states and 31238 transitions. [2018-11-07 11:57:52,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 11:57:52,217 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2018-11-07 11:57:52,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:57:52,298 INFO L225 Difference]: With dead ends: 19748 [2018-11-07 11:57:52,298 INFO L226 Difference]: Without dead ends: 12632 [2018-11-07 11:57:52,342 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 11:57:52,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12632 states. [2018-11-07 11:57:52,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12632 to 12430. [2018-11-07 11:57:52,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12430 states. [2018-11-07 11:57:52,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12430 states to 12430 states and 18009 transitions. [2018-11-07 11:57:52,680 INFO L78 Accepts]: Start accepts. Automaton has 12430 states and 18009 transitions. Word has length 151 [2018-11-07 11:57:52,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:57:52,681 INFO L480 AbstractCegarLoop]: Abstraction has 12430 states and 18009 transitions. [2018-11-07 11:57:52,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 11:57:52,681 INFO L276 IsEmpty]: Start isEmpty. Operand 12430 states and 18009 transitions. [2018-11-07 11:57:52,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-11-07 11:57:52,689 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:57:52,689 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 11:57:52,690 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:57:52,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:57:52,690 INFO L82 PathProgramCache]: Analyzing trace with hash 220658057, now seen corresponding path program 1 times [2018-11-07 11:57:52,690 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:57:52,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:57:52,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:57:52,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:57:52,692 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:57:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:57:53,146 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:57:53,147 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:57:53,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 11:57:53,147 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:57:53,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 11:57:53,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 11:57:53,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 11:57:53,148 INFO L87 Difference]: Start difference. First operand 12430 states and 18009 transitions. Second operand 6 states. [2018-11-07 11:58:09,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:58:09,158 INFO L93 Difference]: Finished difference Result 42978 states and 69522 transitions. [2018-11-07 11:58:09,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 11:58:09,160 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2018-11-07 11:58:09,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:58:09,332 INFO L225 Difference]: With dead ends: 42978 [2018-11-07 11:58:09,333 INFO L226 Difference]: Without dead ends: 30554 [2018-11-07 11:58:09,424 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 11:58:09,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30554 states. [2018-11-07 11:58:10,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30554 to 30315. [2018-11-07 11:58:10,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30315 states. [2018-11-07 11:58:10,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30315 states to 30315 states and 43965 transitions. [2018-11-07 11:58:10,707 INFO L78 Accepts]: Start accepts. Automaton has 30315 states and 43965 transitions. Word has length 173 [2018-11-07 11:58:10,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:58:10,708 INFO L480 AbstractCegarLoop]: Abstraction has 30315 states and 43965 transitions. [2018-11-07 11:58:10,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 11:58:10,708 INFO L276 IsEmpty]: Start isEmpty. Operand 30315 states and 43965 transitions. [2018-11-07 11:58:10,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-11-07 11:58:10,713 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:58:10,714 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 11:58:10,714 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:58:10,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:58:10,715 INFO L82 PathProgramCache]: Analyzing trace with hash 286903089, now seen corresponding path program 1 times [2018-11-07 11:58:10,715 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:58:10,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:58:10,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:58:10,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:58:10,716 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:58:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:58:11,005 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 11:58:11,430 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:58:11,430 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:58:11,430 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 11:58:11,431 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:58:11,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 11:58:11,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 11:58:11,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 11:58:11,432 INFO L87 Difference]: Start difference. First operand 30315 states and 43965 transitions. Second operand 6 states. [2018-11-07 11:58:24,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:58:24,240 INFO L93 Difference]: Finished difference Result 73877 states and 116125 transitions. [2018-11-07 11:58:24,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 11:58:24,243 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 196 [2018-11-07 11:58:24,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:58:24,444 INFO L225 Difference]: With dead ends: 73877 [2018-11-07 11:58:24,444 INFO L226 Difference]: Without dead ends: 43568 [2018-11-07 11:58:24,544 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 11:58:24,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43568 states. [2018-11-07 11:58:25,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43568 to 43255. [2018-11-07 11:58:25,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43255 states. [2018-11-07 11:58:25,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43255 states to 43255 states and 61363 transitions. [2018-11-07 11:58:25,587 INFO L78 Accepts]: Start accepts. Automaton has 43255 states and 61363 transitions. Word has length 196 [2018-11-07 11:58:25,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:58:25,590 INFO L480 AbstractCegarLoop]: Abstraction has 43255 states and 61363 transitions. [2018-11-07 11:58:25,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 11:58:25,590 INFO L276 IsEmpty]: Start isEmpty. Operand 43255 states and 61363 transitions. [2018-11-07 11:58:25,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-11-07 11:58:25,601 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:58:25,601 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 11:58:25,601 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:58:25,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:58:25,602 INFO L82 PathProgramCache]: Analyzing trace with hash 624252017, now seen corresponding path program 1 times [2018-11-07 11:58:25,602 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:58:25,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:58:25,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:58:25,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:58:25,609 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:58:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:58:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 16 proven. 94 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 11:58:25,824 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 11:58:25,824 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 11:58:25,825 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 221 with the following transitions: [2018-11-07 11:58:25,827 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2647], [2649], [2652], [2660], [2668], [2676], [2684], [2692], [2700], [2708], [2716], [2724], [2732], [2740], [2748], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3257], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3285], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 11:58:25,893 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 11:58:25,893 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 11:58:26,708 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 11:58:26,710 INFO L272 AbstractInterpreter]: Visited 111 different actions 111 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 11:58:26,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:58:26,760 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 11:58:27,780 INFO L227 lantSequenceWeakener]: Weakened 198 states. On average, predicates are now at 70.88% of their original sizes. [2018-11-07 11:58:27,782 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 11:58:28,674 INFO L415 sIntCurrentIteration]: We unified 219 AI predicates to 219 [2018-11-07 11:58:28,674 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 11:58:28,675 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 11:58:28,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2018-11-07 11:58:28,675 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:58:28,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 11:58:28,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 11:58:28,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 11:58:28,677 INFO L87 Difference]: Start difference. First operand 43255 states and 61363 transitions. Second operand 11 states. [2018-11-07 11:58:38,893 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown