java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label17_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 02:53:44,576 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 02:53:44,578 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 02:53:44,592 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 02:53:44,593 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 02:53:44,597 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 02:53:44,599 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 02:53:44,601 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 02:53:44,602 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 02:53:44,603 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 02:53:44,604 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 02:53:44,605 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 02:53:44,605 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 02:53:44,606 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 02:53:44,608 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 02:53:44,608 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 02:53:44,609 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 02:53:44,611 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 02:53:44,614 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 02:53:44,615 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 02:53:44,619 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 02:53:44,620 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 02:53:44,625 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 02:53:44,625 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 02:53:44,626 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 02:53:44,626 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 02:53:44,628 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 02:53:44,629 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 02:53:44,632 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 02:53:44,633 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 02:53:44,633 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 02:53:44,635 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 02:53:44,636 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 02:53:44,636 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 02:53:44,637 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 02:53:44,638 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 02:53:44,638 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 02:53:44,669 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 02:53:44,669 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 02:53:44,670 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 02:53:44,670 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 02:53:44,671 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 02:53:44,671 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 02:53:44,671 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 02:53:44,671 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 02:53:44,671 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 02:53:44,672 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 02:53:44,674 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 02:53:44,675 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 02:53:44,676 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 02:53:44,676 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 02:53:44,676 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 02:53:44,677 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 02:53:44,677 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 02:53:44,677 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 02:53:44,677 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 02:53:44,677 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 02:53:44,678 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 02:53:44,678 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 02:53:44,678 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 02:53:44,678 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 02:53:44,678 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 02:53:44,678 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 02:53:44,679 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 02:53:44,679 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 02:53:44,679 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 02:53:44,679 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 02:53:44,680 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 02:53:44,680 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 02:53:44,680 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 02:53:44,680 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 02:53:44,741 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 02:53:44,758 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 02:53:44,763 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 02:53:44,765 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 02:53:44,765 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 02:53:44,766 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label17_true-unreach-call.c [2018-10-27 02:53:44,834 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/63f04b5b4/4294b7be7cbd4b2ebd35bcd6d2620d9b/FLAG879498bf1 [2018-10-27 02:53:45,748 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 02:53:45,749 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label17_true-unreach-call.c [2018-10-27 02:53:45,799 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/63f04b5b4/4294b7be7cbd4b2ebd35bcd6d2620d9b/FLAG879498bf1 [2018-10-27 02:53:45,816 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/63f04b5b4/4294b7be7cbd4b2ebd35bcd6d2620d9b [2018-10-27 02:53:45,829 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 02:53:45,832 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 02:53:45,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 02:53:45,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 02:53:45,839 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 02:53:45,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:53:45" (1/1) ... [2018-10-27 02:53:45,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441f49ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:45, skipping insertion in model container [2018-10-27 02:53:45,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:53:45" (1/1) ... [2018-10-27 02:53:45,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 02:53:46,076 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 02:53:47,861 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:53:47,866 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 02:53:48,615 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:53:48,654 INFO L193 MainTranslator]: Completed translation [2018-10-27 02:53:48,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:48 WrapperNode [2018-10-27 02:53:48,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 02:53:48,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 02:53:48,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 02:53:48,656 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 02:53:48,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:48" (1/1) ... [2018-10-27 02:53:48,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:48" (1/1) ... [2018-10-27 02:53:49,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 02:53:49,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 02:53:49,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 02:53:49,300 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 02:53:49,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:48" (1/1) ... [2018-10-27 02:53:49,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:48" (1/1) ... [2018-10-27 02:53:49,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:48" (1/1) ... [2018-10-27 02:53:49,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:48" (1/1) ... [2018-10-27 02:53:49,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:48" (1/1) ... [2018-10-27 02:53:49,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:48" (1/1) ... [2018-10-27 02:53:49,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:48" (1/1) ... [2018-10-27 02:53:49,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 02:53:49,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 02:53:49,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 02:53:49,658 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 02:53:49,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 02:53:49,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 02:53:49,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 02:53:49,738 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 02:53:49,738 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 02:53:49,739 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 02:53:49,739 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 02:53:49,739 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 02:53:49,739 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 02:53:49,739 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 02:53:49,740 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 02:53:49,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 02:53:49,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 02:53:49,741 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 02:53:49,741 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 02:54:01,287 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 02:54:01,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:54:01 BoogieIcfgContainer [2018-10-27 02:54:01,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 02:54:01,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 02:54:01,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 02:54:01,300 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 02:54:01,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:53:45" (1/3) ... [2018-10-27 02:54:01,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4756ed02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:54:01, skipping insertion in model container [2018-10-27 02:54:01,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:48" (2/3) ... [2018-10-27 02:54:01,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4756ed02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:54:01, skipping insertion in model container [2018-10-27 02:54:01,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:54:01" (3/3) ... [2018-10-27 02:54:01,305 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label17_true-unreach-call.c [2018-10-27 02:54:01,315 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 02:54:01,332 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 02:54:01,356 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 02:54:01,426 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 02:54:01,426 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 02:54:01,426 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 02:54:01,426 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 02:54:01,426 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 02:54:01,427 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 02:54:01,427 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 02:54:01,427 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 02:54:01,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-27 02:54:01,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-27 02:54:01,506 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:54:01,507 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:54:01,510 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:54:01,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:54:01,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1075822924, now seen corresponding path program 1 times [2018-10-27 02:54:01,522 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:54:01,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:54:01,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:54:01,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:54:01,585 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:54:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:54:02,039 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 02:54:02,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:54:02,151 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:54:02,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 02:54:02,151 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:54:02,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 02:54:02,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 02:54:02,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 02:54:02,173 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-10-27 02:54:14,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:54:14,604 INFO L93 Difference]: Finished difference Result 3087 states and 5699 transitions. [2018-10-27 02:54:14,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 02:54:14,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2018-10-27 02:54:14,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:54:14,644 INFO L225 Difference]: With dead ends: 3087 [2018-10-27 02:54:14,644 INFO L226 Difference]: Without dead ends: 1965 [2018-10-27 02:54:14,658 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 02:54:14,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2018-10-27 02:54:14,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1959. [2018-10-27 02:54:14,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-10-27 02:54:14,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3512 transitions. [2018-10-27 02:54:14,843 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3512 transitions. Word has length 40 [2018-10-27 02:54:14,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:54:14,844 INFO L481 AbstractCegarLoop]: Abstraction has 1959 states and 3512 transitions. [2018-10-27 02:54:14,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 02:54:14,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3512 transitions. [2018-10-27 02:54:14,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-27 02:54:14,851 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:54:14,851 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, 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] [2018-10-27 02:54:14,852 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:54:14,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:54:14,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1534967006, now seen corresponding path program 1 times [2018-10-27 02:54:14,852 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:54:14,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:54:14,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:54:14,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:54:14,854 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:54:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:54:15,376 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:54:15,377 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:54:15,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 02:54:15,377 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:54:15,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 02:54:15,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 02:54:15,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 02:54:15,382 INFO L87 Difference]: Start difference. First operand 1959 states and 3512 transitions. Second operand 6 states. [2018-10-27 02:54:37,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:54:37,543 INFO L93 Difference]: Finished difference Result 5634 states and 10287 transitions. [2018-10-27 02:54:37,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 02:54:37,551 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-10-27 02:54:37,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:54:37,584 INFO L225 Difference]: With dead ends: 5634 [2018-10-27 02:54:37,584 INFO L226 Difference]: Without dead ends: 3681 [2018-10-27 02:54:37,594 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 02:54:37,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2018-10-27 02:54:37,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 3650. [2018-10-27 02:54:37,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3650 states. [2018-10-27 02:54:37,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 5957 transitions. [2018-10-27 02:54:37,731 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 5957 transitions. Word has length 117 [2018-10-27 02:54:37,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:54:37,732 INFO L481 AbstractCegarLoop]: Abstraction has 3650 states and 5957 transitions. [2018-10-27 02:54:37,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 02:54:37,732 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 5957 transitions. [2018-10-27 02:54:37,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-27 02:54:37,738 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:54:37,738 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, 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] [2018-10-27 02:54:37,739 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:54:37,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:54:37,739 INFO L82 PathProgramCache]: Analyzing trace with hash -378735212, now seen corresponding path program 1 times [2018-10-27 02:54:37,739 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:54:37,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:54:37,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:54:37,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:54:37,741 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:54:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:54:38,027 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:54:38,028 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:54:38,028 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 02:54:38,028 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:54:38,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 02:54:38,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 02:54:38,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 02:54:38,030 INFO L87 Difference]: Start difference. First operand 3650 states and 5957 transitions. Second operand 6 states. [2018-10-27 02:54:49,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:54:49,233 INFO L93 Difference]: Finished difference Result 12385 states and 20601 transitions. [2018-10-27 02:54:49,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 02:54:49,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-10-27 02:54:49,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:54:49,290 INFO L225 Difference]: With dead ends: 12385 [2018-10-27 02:54:49,290 INFO L226 Difference]: Without dead ends: 8741 [2018-10-27 02:54:49,315 INFO L605 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 [2018-10-27 02:54:49,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8741 states. [2018-10-27 02:54:49,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8741 to 8684. [2018-10-27 02:54:49,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8684 states. [2018-10-27 02:54:49,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8684 states to 8684 states and 12864 transitions. [2018-10-27 02:54:49,562 INFO L78 Accepts]: Start accepts. Automaton has 8684 states and 12864 transitions. Word has length 136 [2018-10-27 02:54:49,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:54:49,562 INFO L481 AbstractCegarLoop]: Abstraction has 8684 states and 12864 transitions. [2018-10-27 02:54:49,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 02:54:49,563 INFO L276 IsEmpty]: Start isEmpty. Operand 8684 states and 12864 transitions. [2018-10-27 02:54:49,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-27 02:54:49,567 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:54:49,567 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, 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] [2018-10-27 02:54:49,567 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:54:49,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:54:49,568 INFO L82 PathProgramCache]: Analyzing trace with hash 279720828, now seen corresponding path program 1 times [2018-10-27 02:54:49,568 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:54:49,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:54:49,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:54:49,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:54:49,569 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:54:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:54:49,905 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 02:54:50,074 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:54:50,074 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:54:50,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 02:54:50,075 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:54:50,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 02:54:50,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 02:54:50,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 02:54:50,076 INFO L87 Difference]: Start difference. First operand 8684 states and 12864 transitions. Second operand 6 states. [2018-10-27 02:55:01,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:55:01,428 INFO L93 Difference]: Finished difference Result 22909 states and 34919 transitions. [2018-10-27 02:55:01,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 02:55:01,436 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2018-10-27 02:55:01,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:55:01,530 INFO L225 Difference]: With dead ends: 22909 [2018-10-27 02:55:01,531 INFO L226 Difference]: Without dead ends: 14231 [2018-10-27 02:55:01,580 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 02:55:01,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14231 states. [2018-10-27 02:55:01,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14231 to 14057. [2018-10-27 02:55:01,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14057 states. [2018-10-27 02:55:01,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14057 states to 14057 states and 19960 transitions. [2018-10-27 02:55:01,964 INFO L78 Accepts]: Start accepts. Automaton has 14057 states and 19960 transitions. Word has length 148 [2018-10-27 02:55:01,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:55:01,964 INFO L481 AbstractCegarLoop]: Abstraction has 14057 states and 19960 transitions. [2018-10-27 02:55:01,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 02:55:01,965 INFO L276 IsEmpty]: Start isEmpty. Operand 14057 states and 19960 transitions. [2018-10-27 02:55:01,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-27 02:55:01,974 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:55:01,975 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:55:01,975 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:55:01,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:55:01,976 INFO L82 PathProgramCache]: Analyzing trace with hash 407433476, now seen corresponding path program 1 times [2018-10-27 02:55:01,976 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:55:01,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:55:01,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:55:01,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:55:01,977 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:55:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:55:02,330 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 66 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 02:55:02,331 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 02:55:02,331 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 02:55:02,332 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 213 with the following transitions: [2018-10-27 02:55:02,335 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2847], [2849], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3245], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-27 02:55:02,432 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 02:55:02,432 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 02:55:07,051 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 02:55:07,053 INFO L272 AbstractInterpreter]: Visited 101 different actions 101 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 02:55:07,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:55:07,091 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 02:55:12,200 INFO L227 lantSequenceWeakener]: Weakened 191 states. On average, predicates are now at 71.58% of their original sizes. [2018-10-27 02:55:12,200 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 02:55:13,705 INFO L415 sIntCurrentIteration]: We unified 211 AI predicates to 211 [2018-10-27 02:55:13,705 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 02:55:13,706 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 02:55:13,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2018-10-27 02:55:13,707 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:55:13,707 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 02:55:13,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 02:55:13,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-27 02:55:13,708 INFO L87 Difference]: Start difference. First operand 14057 states and 19960 transitions. Second operand 10 states. [2018-10-27 02:55:36,342 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown