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/Problem18_label00_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 06:48:29,543 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 06:48:29,546 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 06:48:29,558 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 06:48:29,558 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 06:48:29,559 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 06:48:29,561 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 06:48:29,563 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 06:48:29,565 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 06:48:29,566 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 06:48:29,567 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 06:48:29,567 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 06:48:29,568 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 06:48:29,572 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 06:48:29,574 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 06:48:29,575 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 06:48:29,576 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 06:48:29,581 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 06:48:29,583 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 06:48:29,585 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 06:48:29,586 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 06:48:29,587 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 06:48:29,590 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 06:48:29,590 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 06:48:29,591 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 06:48:29,592 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 06:48:29,593 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 06:48:29,594 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 06:48:29,595 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 06:48:29,596 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 06:48:29,596 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 06:48:29,597 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 06:48:29,597 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 06:48:29,597 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 06:48:29,598 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 06:48:29,599 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 06:48:29,599 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 06:48:29,616 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 06:48:29,616 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 06:48:29,617 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 06:48:29,617 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 06:48:29,617 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 06:48:29,617 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 06:48:29,618 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 06:48:29,618 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 06:48:29,618 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 06:48:29,618 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 06:48:29,618 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 06:48:29,618 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 06:48:29,619 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 06:48:29,619 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 06:48:29,620 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 06:48:29,620 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 06:48:29,620 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 06:48:29,620 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 06:48:29,620 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 06:48:29,621 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 06:48:29,621 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 06:48:29,621 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 06:48:29,621 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 06:48:29,621 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 06:48:29,622 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 06:48:29,622 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 06:48:29,622 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 06:48:29,622 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 06:48:29,623 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 06:48:29,623 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 06:48:29,623 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 06:48:29,623 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 06:48:29,623 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 06:48:29,624 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 06:48:29,624 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 06:48:29,624 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 06:48:29,682 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 06:48:29,697 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 06:48:29,701 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 06:48:29,703 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 06:48:29,703 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 06:48:29,704 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label00_false-unreach-call.c [2018-11-07 06:48:29,772 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/491b13c02/f25052409dc543749135fbfd39574860/FLAG59df1806b [2018-11-07 06:48:30,586 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 06:48:30,587 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label00_false-unreach-call.c [2018-11-07 06:48:30,617 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/491b13c02/f25052409dc543749135fbfd39574860/FLAG59df1806b [2018-11-07 06:48:30,635 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/491b13c02/f25052409dc543749135fbfd39574860 [2018-11-07 06:48:30,648 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 06:48:30,650 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 06:48:30,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 06:48:30,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 06:48:30,657 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 06:48:30,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:48:30" (1/1) ... [2018-11-07 06:48:30,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7293a3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:48:30, skipping insertion in model container [2018-11-07 06:48:30,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:48:30" (1/1) ... [2018-11-07 06:48:30,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 06:48:30,813 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 06:48:31,964 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:48:31,971 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 06:48:32,469 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:48:32,505 INFO L193 MainTranslator]: Completed translation [2018-11-07 06:48:32,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:48:32 WrapperNode [2018-11-07 06:48:32,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 06:48:32,507 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 06:48:32,507 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 06:48:32,507 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 06:48:32,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:48:32" (1/1) ... [2018-11-07 06:48:32,791 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:48:32" (1/1) ... [2018-11-07 06:48:32,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 06:48:32,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 06:48:32,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 06:48:32,801 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 06:48:32,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:48:32" (1/1) ... [2018-11-07 06:48:32,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:48:32" (1/1) ... [2018-11-07 06:48:32,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:48:32" (1/1) ... [2018-11-07 06:48:32,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:48:32" (1/1) ... [2018-11-07 06:48:32,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:48:32" (1/1) ... [2018-11-07 06:48:32,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:48:32" (1/1) ... [2018-11-07 06:48:33,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:48:32" (1/1) ... [2018-11-07 06:48:33,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 06:48:33,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 06:48:33,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 06:48:33,039 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 06:48:33,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:48:32" (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 06:48:33,111 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 06:48:33,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 06:48:33,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 06:48:33,112 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 06:48:33,112 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 06:48:33,113 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 06:48:33,113 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 06:48:33,113 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 06:48:33,113 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 06:48:33,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 06:48:33,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 06:48:33,114 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 06:48:33,114 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 06:48:42,096 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 06:48:42,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:48:42 BoogieIcfgContainer [2018-11-07 06:48:42,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 06:48:42,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 06:48:42,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 06:48:42,101 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 06:48:42,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:48:30" (1/3) ... [2018-11-07 06:48:42,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c82b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:48:42, skipping insertion in model container [2018-11-07 06:48:42,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:48:32" (2/3) ... [2018-11-07 06:48:42,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c82b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:48:42, skipping insertion in model container [2018-11-07 06:48:42,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:48:42" (3/3) ... [2018-11-07 06:48:42,105 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label00_false-unreach-call.c [2018-11-07 06:48:42,116 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 06:48:42,125 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 06:48:42,143 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 06:48:42,184 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 06:48:42,184 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 06:48:42,184 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 06:48:42,184 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 06:48:42,185 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 06:48:42,185 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 06:48:42,185 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 06:48:42,185 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 06:48:42,224 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 06:48:42,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-07 06:48:42,232 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:48:42,233 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:48:42,235 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:48:42,242 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:48:42,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1170183564, now seen corresponding path program 1 times [2018-11-07 06:48:42,245 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:48:42,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:48:42,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:48:42,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:48:42,298 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:48:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:48:42,683 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 06:48:42,784 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 06:48:42,786 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:48:42,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 06:48:42,790 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:48:42,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 06:48:42,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 06:48:42,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 06:48:42,817 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 06:48:49,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:48:49,476 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 06:48:49,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 06:48:49,479 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2018-11-07 06:48:49,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:48:49,526 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 06:48:49,527 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 06:48:49,545 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 06:48:49,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 06:48:49,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 06:48:49,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 06:48:49,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2715 transitions. [2018-11-07 06:48:49,713 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2715 transitions. Word has length 26 [2018-11-07 06:48:49,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:48:49,713 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2715 transitions. [2018-11-07 06:48:49,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 06:48:49,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2715 transitions. [2018-11-07 06:48:49,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-11-07 06:48:49,723 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:48:49,723 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 06:48:49,723 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:48:49,724 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:48:49,724 INFO L82 PathProgramCache]: Analyzing trace with hash -246185793, now seen corresponding path program 1 times [2018-11-07 06:48:49,724 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:48:49,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:48:49,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:48:49,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:48:49,727 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:48:49,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:48:50,011 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:48:50,011 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:48:50,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 06:48:50,011 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:48:50,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 06:48:50,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 06:48:50,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 06:48:50,014 INFO L87 Difference]: Start difference. First operand 1474 states and 2715 transitions. Second operand 5 states. [2018-11-07 06:48:58,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:48:58,784 INFO L93 Difference]: Finished difference Result 4419 states and 8226 transitions. [2018-11-07 06:48:58,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 06:48:58,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2018-11-07 06:48:58,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:48:58,804 INFO L225 Difference]: With dead ends: 4419 [2018-11-07 06:48:58,804 INFO L226 Difference]: Without dead ends: 2951 [2018-11-07 06:48:58,809 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 06:48:58,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-11-07 06:48:58,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-11-07 06:48:58,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-11-07 06:48:58,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4901 transitions. [2018-11-07 06:48:58,904 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4901 transitions. Word has length 97 [2018-11-07 06:48:58,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:48:58,904 INFO L480 AbstractCegarLoop]: Abstraction has 2925 states and 4901 transitions. [2018-11-07 06:48:58,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 06:48:58,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4901 transitions. [2018-11-07 06:48:58,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-07 06:48:58,912 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:48:58,913 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 06:48:58,913 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:48:58,913 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:48:58,913 INFO L82 PathProgramCache]: Analyzing trace with hash 424888758, now seen corresponding path program 1 times [2018-11-07 06:48:58,914 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:48:58,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:48:58,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:48:58,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:48:58,915 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:48:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:48:59,132 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:48:59,133 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:48:59,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 06:48:59,133 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:48:59,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:48:59,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:48:59,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:48:59,135 INFO L87 Difference]: Start difference. First operand 2925 states and 4901 transitions. Second operand 6 states. [2018-11-07 06:49:10,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:49:10,031 INFO L93 Difference]: Finished difference Result 11200 states and 19628 transitions. [2018-11-07 06:49:10,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 06:49:10,034 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-11-07 06:49:10,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:49:10,099 INFO L225 Difference]: With dead ends: 11200 [2018-11-07 06:49:10,099 INFO L226 Difference]: Without dead ends: 8281 [2018-11-07 06:49:10,129 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 06:49:10,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8281 states. [2018-11-07 06:49:10,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8281 to 8209. [2018-11-07 06:49:10,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8209 states. [2018-11-07 06:49:10,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8209 states to 8209 states and 12155 transitions. [2018-11-07 06:49:10,412 INFO L78 Accepts]: Start accepts. Automaton has 8209 states and 12155 transitions. Word has length 102 [2018-11-07 06:49:10,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:49:10,413 INFO L480 AbstractCegarLoop]: Abstraction has 8209 states and 12155 transitions. [2018-11-07 06:49:10,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 06:49:10,413 INFO L276 IsEmpty]: Start isEmpty. Operand 8209 states and 12155 transitions. [2018-11-07 06:49:10,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-11-07 06:49:10,423 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:49:10,423 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:49:10,424 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:49:10,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:49:10,424 INFO L82 PathProgramCache]: Analyzing trace with hash -778397718, now seen corresponding path program 1 times [2018-11-07 06:49:10,424 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:49:10,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:49:10,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:49:10,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:49:10,426 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:49:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:49:10,669 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:49:10,669 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:49:10,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 06:49:10,670 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:49:10,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 06:49:10,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 06:49:10,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:49:10,671 INFO L87 Difference]: Start difference. First operand 8209 states and 12155 transitions. Second operand 4 states. [2018-11-07 06:49:18,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:49:18,453 INFO L93 Difference]: Finished difference Result 29378 states and 47006 transitions. [2018-11-07 06:49:18,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 06:49:18,456 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2018-11-07 06:49:18,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:49:18,587 INFO L225 Difference]: With dead ends: 29378 [2018-11-07 06:49:18,588 INFO L226 Difference]: Without dead ends: 21175 [2018-11-07 06:49:18,657 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:49:18,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21175 states. [2018-11-07 06:49:19,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21175 to 21175. [2018-11-07 06:49:19,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21175 states. [2018-11-07 06:49:19,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21175 states to 21175 states and 31588 transitions. [2018-11-07 06:49:19,305 INFO L78 Accepts]: Start accepts. Automaton has 21175 states and 31588 transitions. Word has length 124 [2018-11-07 06:49:19,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:49:19,305 INFO L480 AbstractCegarLoop]: Abstraction has 21175 states and 31588 transitions. [2018-11-07 06:49:19,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 06:49:19,306 INFO L276 IsEmpty]: Start isEmpty. Operand 21175 states and 31588 transitions. [2018-11-07 06:49:19,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-11-07 06:49:19,318 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:49:19,322 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:49:19,323 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:49:19,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:49:19,323 INFO L82 PathProgramCache]: Analyzing trace with hash -186406688, now seen corresponding path program 1 times [2018-11-07 06:49:19,323 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:49:19,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:49:19,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:49:19,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:49:19,325 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:49:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:49:19,609 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 06:49:19,885 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 38 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 06:49:19,885 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:49:19,886 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:49:19,887 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 223 with the following transitions: [2018-11-07 06:49:19,889 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1731], [1733], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2340], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 06:49:19,942 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:49:19,943 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:49:20,612 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:49:20,614 INFO L272 AbstractInterpreter]: Visited 131 different actions 131 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 06:49:20,651 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:49:20,651 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:49:21,294 INFO L227 lantSequenceWeakener]: Weakened 213 states. On average, predicates are now at 77.48% of their original sizes. [2018-11-07 06:49:21,294 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:49:21,559 INFO L415 sIntCurrentIteration]: We unified 221 AI predicates to 221 [2018-11-07 06:49:21,559 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:49:21,563 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:49:21,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-11-07 06:49:21,564 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:49:21,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:49:21,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:49:21,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:49:21,566 INFO L87 Difference]: Start difference. First operand 21175 states and 31588 transitions. Second operand 6 states. [2018-11-07 06:50:30,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:50:30,610 INFO L93 Difference]: Finished difference Result 43049 states and 64019 transitions. [2018-11-07 06:50:30,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 06:50:30,611 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 222 [2018-11-07 06:50:30,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:50:30,699 INFO L225 Difference]: With dead ends: 43049 [2018-11-07 06:50:30,699 INFO L226 Difference]: Without dead ends: 21880 [2018-11-07 06:50:30,749 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 222 GetRequests, 217 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 06:50:30,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21880 states. [2018-11-07 06:50:31,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21880 to 21878. [2018-11-07 06:50:31,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21878 states. [2018-11-07 06:50:31,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21878 states to 21878 states and 32303 transitions. [2018-11-07 06:50:31,334 INFO L78 Accepts]: Start accepts. Automaton has 21878 states and 32303 transitions. Word has length 222 [2018-11-07 06:50:31,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:50:31,334 INFO L480 AbstractCegarLoop]: Abstraction has 21878 states and 32303 transitions. [2018-11-07 06:50:31,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 06:50:31,335 INFO L276 IsEmpty]: Start isEmpty. Operand 21878 states and 32303 transitions. [2018-11-07 06:50:31,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-11-07 06:50:31,349 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:50:31,350 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:50:31,351 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:50:31,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:50:31,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1943607165, now seen corresponding path program 1 times [2018-11-07 06:50:31,351 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:50:31,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:50:31,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:50:31,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:50:31,353 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:50:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:50:31,938 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 06:50:32,139 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 06:50:32,358 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 06:50:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 116 proven. 202 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 06:50:32,690 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:50:32,691 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:50:32,691 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 410 with the following transitions: [2018-11-07 06:50:32,692 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1731], [1733], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2340], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 06:50:32,700 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:50:32,701 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:50:32,935 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:50:32,936 INFO L272 AbstractInterpreter]: Visited 197 different actions 386 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 06:50:32,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:50:32,964 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:50:32,964 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:50:32,964 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 06:50:32,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:50:32,993 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:50:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:50:33,147 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:50:33,576 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 301 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-11-07 06:50:33,577 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:50:34,011 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 130 proven. 69 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2018-11-07 06:50:34,049 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:50:34,050 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 16 [2018-11-07 06:50:34,050 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:50:34,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-07 06:50:34,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-07 06:50:34,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2018-11-07 06:50:34,053 INFO L87 Difference]: Start difference. First operand 21878 states and 32303 transitions. Second operand 14 states. [2018-11-07 06:50:34,658 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-07 06:50:55,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:50:55,952 INFO L93 Difference]: Finished difference Result 77642 states and 115702 transitions. [2018-11-07 06:50:55,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-11-07 06:50:55,953 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 409 [2018-11-07 06:50:55,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:50:56,219 INFO L225 Difference]: With dead ends: 77642 [2018-11-07 06:50:56,219 INFO L226 Difference]: Without dead ends: 54910 [2018-11-07 06:50:56,487 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 925 GetRequests, 860 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1346 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=909, Invalid=3381, Unknown=0, NotChecked=0, Total=4290 [2018-11-07 06:50:56,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54910 states. [2018-11-07 06:50:58,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54910 to 53371. [2018-11-07 06:50:58,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53371 states. [2018-11-07 06:50:58,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53371 states to 53371 states and 67561 transitions. [2018-11-07 06:50:58,337 INFO L78 Accepts]: Start accepts. Automaton has 53371 states and 67561 transitions. Word has length 409 [2018-11-07 06:50:58,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:50:58,338 INFO L480 AbstractCegarLoop]: Abstraction has 53371 states and 67561 transitions. [2018-11-07 06:50:58,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-07 06:50:58,338 INFO L276 IsEmpty]: Start isEmpty. Operand 53371 states and 67561 transitions. [2018-11-07 06:50:58,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2018-11-07 06:50:58,374 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:50:58,375 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:50:58,376 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:50:58,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:50:58,376 INFO L82 PathProgramCache]: Analyzing trace with hash 502302544, now seen corresponding path program 1 times [2018-11-07 06:50:58,376 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:50:58,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:50:58,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:50:58,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:50:58,378 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:50:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:50:59,136 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 06:50:59,792 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 155 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:50:59,792 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:50:59,792 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:50:59,793 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 779 with the following transitions: [2018-11-07 06:50:59,794 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1731], [1733], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2228], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2340], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-07 06:50:59,808 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:50:59,808 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:51:00,581 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:51:00,581 INFO L272 AbstractInterpreter]: Visited 537 different actions 1068 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 06:51:00,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:51:00,621 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:51:01,438 INFO L227 lantSequenceWeakener]: Weakened 775 states. On average, predicates are now at 77.37% of their original sizes. [2018-11-07 06:51:01,438 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:51:01,731 INFO L415 sIntCurrentIteration]: We unified 777 AI predicates to 777 [2018-11-07 06:51:01,731 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:51:01,731 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:51:01,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [11] total 27 [2018-11-07 06:51:01,732 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:51:01,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 06:51:01,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 06:51:01,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2018-11-07 06:51:01,735 INFO L87 Difference]: Start difference. First operand 53371 states and 67561 transitions. Second operand 18 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown