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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label41_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 06:40:06,562 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 06:40:06,564 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 06:40:06,577 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 06:40:06,577 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 06:40:06,578 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 06:40:06,579 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 06:40:06,581 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 06:40:06,583 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 06:40:06,584 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 06:40:06,585 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 06:40:06,585 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 06:40:06,586 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 06:40:06,587 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 06:40:06,591 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 06:40:06,592 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 06:40:06,593 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 06:40:06,595 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 06:40:06,600 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 06:40:06,601 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 06:40:06,605 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 06:40:06,606 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 06:40:06,611 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 06:40:06,611 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 06:40:06,611 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 06:40:06,613 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 06:40:06,614 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 06:40:06,615 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 06:40:06,616 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 06:40:06,619 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 06:40:06,619 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 06:40:06,619 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 06:40:06,620 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 06:40:06,621 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 06:40:06,621 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 06:40:06,622 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 06:40:06,622 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 06:40:06,646 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 06:40:06,646 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 06:40:06,651 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 06:40:06,652 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 06:40:06,652 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 06:40:06,652 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 06:40:06,652 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 06:40:06,652 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 06:40:06,653 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 06:40:06,653 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 06:40:06,653 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 06:40:06,653 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 06:40:06,653 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 06:40:06,653 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 06:40:06,655 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 06:40:06,655 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 06:40:06,655 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 06:40:06,655 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 06:40:06,655 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 06:40:06,656 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 06:40:06,657 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 06:40:06,658 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 06:40:06,658 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 06:40:06,658 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 06:40:06,658 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 06:40:06,658 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 06:40:06,659 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 06:40:06,659 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 06:40:06,659 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 06:40:06,659 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 06:40:06,659 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 06:40:06,659 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 06:40:06,660 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 06:40:06,660 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 06:40:06,660 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 06:40:06,660 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 06:40:06,726 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 06:40:06,742 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 06:40:06,747 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 06:40:06,748 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 06:40:06,749 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 06:40:06,749 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label41_false-unreach-call.c [2018-11-07 06:40:06,818 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/821b0a2b0/bdcef773b2894b7c8f4c6d89a27e7d5c/FLAG2598c7716 [2018-11-07 06:40:07,462 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 06:40:07,463 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label41_false-unreach-call.c [2018-11-07 06:40:07,485 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/821b0a2b0/bdcef773b2894b7c8f4c6d89a27e7d5c/FLAG2598c7716 [2018-11-07 06:40:07,507 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/821b0a2b0/bdcef773b2894b7c8f4c6d89a27e7d5c [2018-11-07 06:40:07,521 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 06:40:07,524 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 06:40:07,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 06:40:07,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 06:40:07,532 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 06:40:07,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:40:07" (1/1) ... [2018-11-07 06:40:07,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cb7d90b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:07, skipping insertion in model container [2018-11-07 06:40:07,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:40:07" (1/1) ... [2018-11-07 06:40:07,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 06:40:07,656 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 06:40:08,369 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:40:08,373 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 06:40:08,619 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:40:08,640 INFO L193 MainTranslator]: Completed translation [2018-11-07 06:40:08,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:08 WrapperNode [2018-11-07 06:40:08,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 06:40:08,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 06:40:08,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 06:40:08,642 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 06:40:08,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:08" (1/1) ... [2018-11-07 06:40:08,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:08" (1/1) ... [2018-11-07 06:40:08,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 06:40:08,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 06:40:08,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 06:40:08,851 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 06:40:08,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:08" (1/1) ... [2018-11-07 06:40:08,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:08" (1/1) ... [2018-11-07 06:40:08,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:08" (1/1) ... [2018-11-07 06:40:08,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:08" (1/1) ... [2018-11-07 06:40:08,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:08" (1/1) ... [2018-11-07 06:40:08,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:08" (1/1) ... [2018-11-07 06:40:08,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:08" (1/1) ... [2018-11-07 06:40:09,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 06:40:09,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 06:40:09,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 06:40:09,008 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 06:40:09,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:08" (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 06:40:09,074 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 06:40:09,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 06:40:09,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 06:40:09,074 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 06:40:09,075 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 06:40:09,075 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 06:40:09,075 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 06:40:09,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 06:40:09,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 06:40:09,076 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 06:40:09,076 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 06:40:16,135 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 06:40:16,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:40:16 BoogieIcfgContainer [2018-11-07 06:40:16,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 06:40:16,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 06:40:16,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 06:40:16,142 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 06:40:16,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:40:07" (1/3) ... [2018-11-07 06:40:16,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ec4f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:40:16, skipping insertion in model container [2018-11-07 06:40:16,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:40:08" (2/3) ... [2018-11-07 06:40:16,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ec4f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:40:16, skipping insertion in model container [2018-11-07 06:40:16,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:40:16" (3/3) ... [2018-11-07 06:40:16,146 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label41_false-unreach-call.c [2018-11-07 06:40:16,160 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 06:40:16,173 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 06:40:16,193 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 06:40:16,234 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 06:40:16,234 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 06:40:16,234 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 06:40:16,235 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 06:40:16,235 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 06:40:16,235 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 06:40:16,235 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 06:40:16,235 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 06:40:16,267 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 06:40:16,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-07 06:40:16,274 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:40:16,276 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:40:16,278 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:40:16,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:40:16,285 INFO L82 PathProgramCache]: Analyzing trace with hash 807729476, now seen corresponding path program 1 times [2018-11-07 06:40:16,287 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:40:16,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:40:16,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:40:16,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:40:16,341 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:40:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:40:16,722 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 06:40:16,809 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 06:40:16,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:40:16,812 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 06:40:16,812 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:40:16,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 06:40:16,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 06:40:16,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 06:40:16,839 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 06:40:20,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:40:20,983 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 06:40:20,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 06:40:20,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2018-11-07 06:40:20,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:40:21,010 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 06:40:21,010 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 06:40:21,022 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 06:40:21,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 06:40:21,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 06:40:21,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 06:40:21,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1353 transitions. [2018-11-07 06:40:21,139 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1353 transitions. Word has length 30 [2018-11-07 06:40:21,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:40:21,139 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1353 transitions. [2018-11-07 06:40:21,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 06:40:21,140 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1353 transitions. [2018-11-07 06:40:21,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-11-07 06:40:21,147 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:40:21,147 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:40:21,148 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:40:21,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:40:21,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1138577759, now seen corresponding path program 1 times [2018-11-07 06:40:21,149 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:40:21,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:40:21,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:40:21,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:40:21,150 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:40:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:40:21,544 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:40:21,545 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:40:21,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 06:40:21,545 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:40:21,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:40:21,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:40:21,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:40:21,548 INFO L87 Difference]: Start difference. First operand 744 states and 1353 transitions. Second operand 6 states. [2018-11-07 06:40:28,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:40:28,301 INFO L93 Difference]: Finished difference Result 2184 states and 3997 transitions. [2018-11-07 06:40:28,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 06:40:28,304 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2018-11-07 06:40:28,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:40:28,318 INFO L225 Difference]: With dead ends: 2184 [2018-11-07 06:40:28,318 INFO L226 Difference]: Without dead ends: 1446 [2018-11-07 06:40:28,324 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 06:40:28,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2018-11-07 06:40:28,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1425. [2018-11-07 06:40:28,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2018-11-07 06:40:28,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2267 transitions. [2018-11-07 06:40:28,406 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2267 transitions. Word has length 123 [2018-11-07 06:40:28,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:40:28,407 INFO L480 AbstractCegarLoop]: Abstraction has 1425 states and 2267 transitions. [2018-11-07 06:40:28,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 06:40:28,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2267 transitions. [2018-11-07 06:40:28,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-11-07 06:40:28,427 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:40:28,427 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 06:40:28,428 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:40:28,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:40:28,428 INFO L82 PathProgramCache]: Analyzing trace with hash -913546264, now seen corresponding path program 1 times [2018-11-07 06:40:28,428 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:40:28,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:40:28,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:40:28,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:40:28,431 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:40:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:40:28,731 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 46 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 06:40:28,731 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:40:28,732 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:40:28,732 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 235 with the following transitions: [2018-11-07 06:40:28,735 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [319], [321], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 06:40:28,781 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:40:28,782 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:40:29,330 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:40:29,335 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 06:40:29,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:40:29,377 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:40:30,024 INFO L227 lantSequenceWeakener]: Weakened 225 states. On average, predicates are now at 77.55% of their original sizes. [2018-11-07 06:40:30,025 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:40:30,287 INFO L415 sIntCurrentIteration]: We unified 233 AI predicates to 233 [2018-11-07 06:40:30,287 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:40:30,288 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:40:30,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 06:40:30,289 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:40:30,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:40:30,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:40:30,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:40:30,291 INFO L87 Difference]: Start difference. First operand 1425 states and 2267 transitions. Second operand 6 states. [2018-11-07 06:42:13,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:42:13,637 INFO L93 Difference]: Finished difference Result 3184 states and 5088 transitions. [2018-11-07 06:42:13,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 06:42:13,637 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 234 [2018-11-07 06:42:13,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:42:13,647 INFO L225 Difference]: With dead ends: 3184 [2018-11-07 06:42:13,648 INFO L226 Difference]: Without dead ends: 1765 [2018-11-07 06:42:13,652 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 234 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 06:42:13,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2018-11-07 06:42:13,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1763. [2018-11-07 06:42:13,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2018-11-07 06:42:13,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2612 transitions. [2018-11-07 06:42:13,699 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2612 transitions. Word has length 234 [2018-11-07 06:42:13,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:42:13,700 INFO L480 AbstractCegarLoop]: Abstraction has 1763 states and 2612 transitions. [2018-11-07 06:42:13,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 06:42:13,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2612 transitions. [2018-11-07 06:42:13,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-11-07 06:42:13,705 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:42:13,705 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 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 06:42:13,705 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:42:13,706 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:42:13,706 INFO L82 PathProgramCache]: Analyzing trace with hash 738787210, now seen corresponding path program 1 times [2018-11-07 06:42:13,706 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:42:13,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:42:13,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:42:13,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:42:13,708 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:42:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:42:14,024 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 75 proven. 197 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 06:42:14,025 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:42:14,025 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:42:14,025 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 327 with the following transitions: [2018-11-07 06:42:14,026 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [319], [321], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 06:42:14,032 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:42:14,032 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:42:14,254 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:42:14,254 INFO L272 AbstractInterpreter]: Visited 121 different actions 349 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 06:42:14,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:42:14,295 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:42:14,295 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:42:14,295 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 06:42:14,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:42:14,313 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:42:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:42:14,443 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:42:14,850 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 320 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-07 06:42:14,851 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:42:15,686 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 164 proven. 92 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-11-07 06:42:15,708 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:42:15,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 06:42:15,708 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:42:15,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 06:42:15,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 06:42:15,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 06:42:15,710 INFO L87 Difference]: Start difference. First operand 1763 states and 2612 transitions. Second operand 9 states. [2018-11-07 06:42:20,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:42:20,770 INFO L93 Difference]: Finished difference Result 4237 states and 6745 transitions. [2018-11-07 06:42:20,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 06:42:20,775 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 326 [2018-11-07 06:42:20,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:42:20,795 INFO L225 Difference]: With dead ends: 4237 [2018-11-07 06:42:20,795 INFO L226 Difference]: Without dead ends: 2818 [2018-11-07 06:42:20,801 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 651 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2018-11-07 06:42:20,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states. [2018-11-07 06:42:20,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 2811. [2018-11-07 06:42:20,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2811 states. [2018-11-07 06:42:20,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 4086 transitions. [2018-11-07 06:42:20,883 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 4086 transitions. Word has length 326 [2018-11-07 06:42:20,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:42:20,884 INFO L480 AbstractCegarLoop]: Abstraction has 2811 states and 4086 transitions. [2018-11-07 06:42:20,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 06:42:20,885 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 4086 transitions. [2018-11-07 06:42:20,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-11-07 06:42:20,895 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:42:20,896 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 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 06:42:20,896 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:42:20,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:42:20,896 INFO L82 PathProgramCache]: Analyzing trace with hash -86815364, now seen corresponding path program 1 times [2018-11-07 06:42:20,897 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:42:20,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:42:20,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:42:20,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:42:20,898 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:42:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:42:21,314 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 192 proven. 200 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-11-07 06:42:21,315 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:42:21,315 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:42:21,315 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 443 with the following transitions: [2018-11-07 06:42:21,316 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [319], [321], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 06:42:21,321 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:42:21,322 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:42:21,680 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:42:21,681 INFO L272 AbstractInterpreter]: Visited 127 different actions 367 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 06:42:21,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:42:21,708 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:42:21,708 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:42:21,708 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 06:42:21,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:42:21,722 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:42:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:42:21,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:42:22,391 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 522 proven. 2 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2018-11-07 06:42:22,392 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:42:22,865 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 192 proven. 200 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-11-07 06:42:22,887 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:42:22,887 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 06:42:22,887 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:42:22,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 06:42:22,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 06:42:22,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-07 06:42:22,889 INFO L87 Difference]: Start difference. First operand 2811 states and 4086 transitions. Second operand 9 states. [2018-11-07 06:42:35,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:42:35,436 INFO L93 Difference]: Finished difference Result 11139 states and 16845 transitions. [2018-11-07 06:42:35,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-11-07 06:42:35,437 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 442 [2018-11-07 06:42:35,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:42:35,488 INFO L225 Difference]: With dead ends: 11139 [2018-11-07 06:42:35,488 INFO L226 Difference]: Without dead ends: 7325 [2018-11-07 06:42:35,555 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 965 GetRequests, 917 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=515, Invalid=1837, Unknown=0, NotChecked=0, Total=2352 [2018-11-07 06:42:35,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7325 states. [2018-11-07 06:42:35,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7325 to 7030. [2018-11-07 06:42:35,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7030 states. [2018-11-07 06:42:35,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7030 states to 7030 states and 7965 transitions. [2018-11-07 06:42:35,771 INFO L78 Accepts]: Start accepts. Automaton has 7030 states and 7965 transitions. Word has length 442 [2018-11-07 06:42:35,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:42:35,772 INFO L480 AbstractCegarLoop]: Abstraction has 7030 states and 7965 transitions. [2018-11-07 06:42:35,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 06:42:35,772 INFO L276 IsEmpty]: Start isEmpty. Operand 7030 states and 7965 transitions. [2018-11-07 06:42:35,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 714 [2018-11-07 06:42:35,801 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:42:35,801 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:35,802 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:42:35,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:42:35,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1531045721, now seen corresponding path program 1 times [2018-11-07 06:42:35,802 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:42:35,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:42:35,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:42:35,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:42:35,804 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:42:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:42:37,141 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 207 proven. 345 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-11-07 06:42:37,141 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:42:37,141 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:42:37,142 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 714 with the following transitions: [2018-11-07 06:42:37,142 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [319], [321], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1256], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 06:42:37,150 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:42:37,151 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:42:37,539 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:42:37,539 INFO L272 AbstractInterpreter]: Visited 250 different actions 494 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 06:42:37,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:42:37,543 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:42:38,318 INFO L227 lantSequenceWeakener]: Weakened 710 states. On average, predicates are now at 77.42% of their original sizes. [2018-11-07 06:42:38,319 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:42:38,535 INFO L415 sIntCurrentIteration]: We unified 712 AI predicates to 712 [2018-11-07 06:42:38,535 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:42:38,535 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:42:38,535 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2018-11-07 06:42:38,536 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:42:38,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 06:42:38,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 06:42:38,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 06:42:38,537 INFO L87 Difference]: Start difference. First operand 7030 states and 7965 transitions. Second operand 10 states. [2018-11-07 06:43:25,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:43:25,963 INFO L93 Difference]: Finished difference Result 14059 states and 15973 transitions. [2018-11-07 06:43:25,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 06:43:25,963 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 713 [2018-11-07 06:43:25,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:43:26,008 INFO L225 Difference]: With dead ends: 14059 [2018-11-07 06:43:26,008 INFO L226 Difference]: Without dead ends: 7373 [2018-11-07 06:43:26,036 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 720 GetRequests, 704 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-11-07 06:43:26,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7373 states. [2018-11-07 06:43:26,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7373 to 7370. [2018-11-07 06:43:26,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7370 states. [2018-11-07 06:43:26,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7370 states to 7370 states and 8311 transitions. [2018-11-07 06:43:26,249 INFO L78 Accepts]: Start accepts. Automaton has 7370 states and 8311 transitions. Word has length 713 [2018-11-07 06:43:26,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:43:26,250 INFO L480 AbstractCegarLoop]: Abstraction has 7370 states and 8311 transitions. [2018-11-07 06:43:26,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 06:43:26,250 INFO L276 IsEmpty]: Start isEmpty. Operand 7370 states and 8311 transitions. [2018-11-07 06:43:26,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2018-11-07 06:43:26,411 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:43:26,412 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:26,413 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:43:26,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:43:26,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1196604654, now seen corresponding path program 1 times [2018-11-07 06:43:26,413 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:43:26,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:43:26,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:43:26,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:43:26,415 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:43:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:43:26,995 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 06:43:27,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 137 proven. 807 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2018-11-07 06:43:27,449 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:43:27,449 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:43:27,450 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 823 with the following transitions: [2018-11-07 06:43:27,450 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [319], [321], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [796], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1256], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 06:43:27,456 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:43:27,456 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:43:27,883 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:43:27,884 INFO L272 AbstractInterpreter]: Visited 259 different actions 772 times. Merged at 7 different actions 17 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 06:43:27,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:43:27,895 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:43:28,577 INFO L227 lantSequenceWeakener]: Weakened 819 states. On average, predicates are now at 80.17% of their original sizes. [2018-11-07 06:43:28,577 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:43:28,803 INFO L415 sIntCurrentIteration]: We unified 821 AI predicates to 821 [2018-11-07 06:43:28,804 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:43:28,804 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:43:28,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-11-07 06:43:28,804 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:43:28,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 06:43:28,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 06:43:28,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 06:43:28,806 INFO L87 Difference]: Start difference. First operand 7370 states and 8311 transitions. Second operand 9 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown