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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label43_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:55:43,734 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:55:43,736 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:55:43,748 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:55:43,748 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:55:43,749 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:55:43,750 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:55:43,752 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:55:43,754 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:55:43,755 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:55:43,756 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:55:43,756 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:55:43,757 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:55:43,758 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:55:43,759 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:55:43,760 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:55:43,761 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:55:43,763 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:55:43,765 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:55:43,766 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:55:43,768 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:55:43,769 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:55:43,771 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:55:43,780 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:55:43,806 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:55:43,806 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:55:43,807 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:55:43,807 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:55:43,807 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:55:43,808 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:55:43,808 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:55:43,808 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:55:43,808 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:55:43,808 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:55:43,808 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:55:43,809 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:55:43,809 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:55:43,810 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:55:43,810 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:55:43,810 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:55:43,810 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:55:43,810 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:55:43,810 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:55:43,811 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:55:43,811 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:55:43,811 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:55:43,811 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:55:43,811 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:55:43,812 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:55:43,812 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:55:43,812 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:55:43,812 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:55:43,812 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:55:43,813 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:55:43,813 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:55:43,813 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:55:43,813 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:55:43,813 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:55:43,862 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:55:43,882 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:55:43,887 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:55:43,889 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:55:43,889 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:55:43,890 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label43_false-unreach-call.c [2018-11-07 00:55:43,964 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c112c47de/77303b19d8a04d4d92c56661b89ce89b/FLAG1c7b585cf [2018-11-07 00:55:44,864 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:55:44,865 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label43_false-unreach-call.c [2018-11-07 00:55:44,912 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c112c47de/77303b19d8a04d4d92c56661b89ce89b/FLAG1c7b585cf [2018-11-07 00:55:44,930 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c112c47de/77303b19d8a04d4d92c56661b89ce89b [2018-11-07 00:55:44,943 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:55:44,945 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:55:44,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:55:44,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:55:44,951 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:55:44,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:55:44" (1/1) ... [2018-11-07 00:55:44,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b5474c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:44, skipping insertion in model container [2018-11-07 00:55:44,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:55:44" (1/1) ... [2018-11-07 00:55:44,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:55:45,203 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:55:47,259 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:55:47,265 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:55:48,804 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:55:48,867 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:55:48,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:48 WrapperNode [2018-11-07 00:55:48,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:55:48,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:55:48,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:55:48,870 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:55:48,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:48" (1/1) ... [2018-11-07 00:55:49,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:48" (1/1) ... [2018-11-07 00:55:49,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:55:49,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:55:49,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:55:49,601 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:55:49,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:48" (1/1) ... [2018-11-07 00:55:49,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:48" (1/1) ... [2018-11-07 00:55:49,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:48" (1/1) ... [2018-11-07 00:55:49,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:48" (1/1) ... [2018-11-07 00:55:49,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:48" (1/1) ... [2018-11-07 00:55:49,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:48" (1/1) ... [2018-11-07 00:55:50,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:48" (1/1) ... [2018-11-07 00:55:50,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:55:50,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:55:50,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:55:50,138 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:55:50,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:48" (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 00:55:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:55:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:55:50,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:55:50,209 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 00:55:50,209 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 00:55:50,210 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 00:55:50,210 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 00:55:50,210 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 00:55:50,210 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 00:55:50,210 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 00:55:50,211 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 00:55:50,211 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:55:50,211 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:55:50,212 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:55:50,212 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:55:50,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:55:50,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:55:50,212 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:55:50,213 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:56:06,130 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:56:06,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:06 BoogieIcfgContainer [2018-11-07 00:56:06,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:56:06,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:56:06,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:56:06,136 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:56:06,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:55:44" (1/3) ... [2018-11-07 00:56:06,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c5a29d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:06, skipping insertion in model container [2018-11-07 00:56:06,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:55:48" (2/3) ... [2018-11-07 00:56:06,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c5a29d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:06, skipping insertion in model container [2018-11-07 00:56:06,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:06" (3/3) ... [2018-11-07 00:56:06,140 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label43_false-unreach-call.c [2018-11-07 00:56:06,150 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:56:06,168 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:56:06,188 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:56:06,255 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:56:06,256 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:56:06,256 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:56:06,256 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:56:06,256 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:56:06,256 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:56:06,256 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:56:06,256 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:56:06,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 00:56:06,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-07 00:56:06,324 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:56:06,329 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] [2018-11-07 00:56:06,332 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:56:06,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:56:06,337 INFO L82 PathProgramCache]: Analyzing trace with hash 522574706, now seen corresponding path program 1 times [2018-11-07 00:56:06,340 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:56:06,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:56:06,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:56:06,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:56:06,394 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:56:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:56:06,809 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:56:06,917 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 00:56:06,920 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:56:06,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:56:06,921 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:56:06,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:56:06,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:56:06,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:56:06,948 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-11-07 00:56:20,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:56:20,146 INFO L93 Difference]: Finished difference Result 4998 states and 9417 transitions. [2018-11-07 00:56:20,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:56:20,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-11-07 00:56:20,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:56:20,195 INFO L225 Difference]: With dead ends: 4998 [2018-11-07 00:56:20,196 INFO L226 Difference]: Without dead ends: 3218 [2018-11-07 00:56:20,211 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 00:56:20,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2018-11-07 00:56:20,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 3215. [2018-11-07 00:56:20,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-11-07 00:56:20,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5854 transitions. [2018-11-07 00:56:20,457 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5854 transitions. Word has length 29 [2018-11-07 00:56:20,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:56:20,458 INFO L480 AbstractCegarLoop]: Abstraction has 3215 states and 5854 transitions. [2018-11-07 00:56:20,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:56:20,459 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5854 transitions. [2018-11-07 00:56:20,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-11-07 00:56:20,468 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:56:20,470 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:20,470 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:56:20,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:56:20,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1863173052, now seen corresponding path program 1 times [2018-11-07 00:56:20,471 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:56:20,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:56:20,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:56:20,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:56:20,474 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:56:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:56:20,903 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:56:21,321 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:56:21,321 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:56:21,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:56:21,322 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:56:21,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:56:21,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:56:21,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:56:21,325 INFO L87 Difference]: Start difference. First operand 3215 states and 5854 transitions. Second operand 6 states. [2018-11-07 00:56:44,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:56:44,641 INFO L93 Difference]: Finished difference Result 9340 states and 16946 transitions. [2018-11-07 00:56:44,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:56:44,644 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2018-11-07 00:56:44,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:56:44,678 INFO L225 Difference]: With dead ends: 9340 [2018-11-07 00:56:44,678 INFO L226 Difference]: Without dead ends: 6131 [2018-11-07 00:56:44,691 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:56:44,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6131 states. [2018-11-07 00:56:44,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6131 to 6091. [2018-11-07 00:56:44,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6091 states. [2018-11-07 00:56:44,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6091 states to 6091 states and 9637 transitions. [2018-11-07 00:56:44,870 INFO L78 Accepts]: Start accepts. Automaton has 6091 states and 9637 transitions. Word has length 101 [2018-11-07 00:56:44,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:56:44,870 INFO L480 AbstractCegarLoop]: Abstraction has 6091 states and 9637 transitions. [2018-11-07 00:56:44,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:56:44,871 INFO L276 IsEmpty]: Start isEmpty. Operand 6091 states and 9637 transitions. [2018-11-07 00:56:44,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-11-07 00:56:44,878 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:56:44,878 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:44,878 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:56:44,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:56:44,879 INFO L82 PathProgramCache]: Analyzing trace with hash -678238073, now seen corresponding path program 1 times [2018-11-07 00:56:44,879 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:56:44,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:56:44,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:56:44,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:56:44,882 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:56:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:56:45,106 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:56:45,106 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:56:45,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:56:45,107 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:56:45,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:56:45,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:56:45,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:56:45,108 INFO L87 Difference]: Start difference. First operand 6091 states and 9637 transitions. Second operand 6 states. [2018-11-07 00:57:06,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:57:06,418 INFO L93 Difference]: Finished difference Result 21091 states and 34228 transitions. [2018-11-07 00:57:06,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:57:06,427 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2018-11-07 00:57:06,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:57:06,513 INFO L225 Difference]: With dead ends: 21091 [2018-11-07 00:57:06,514 INFO L226 Difference]: Without dead ends: 15006 [2018-11-07 00:57:06,538 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:57:06,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15006 states. [2018-11-07 00:57:06,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15006 to 14817. [2018-11-07 00:57:06,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14817 states. [2018-11-07 00:57:06,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14817 states to 14817 states and 22424 transitions. [2018-11-07 00:57:06,915 INFO L78 Accepts]: Start accepts. Automaton has 14817 states and 22424 transitions. Word has length 103 [2018-11-07 00:57:06,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:57:06,916 INFO L480 AbstractCegarLoop]: Abstraction has 14817 states and 22424 transitions. [2018-11-07 00:57:06,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:57:06,916 INFO L276 IsEmpty]: Start isEmpty. Operand 14817 states and 22424 transitions. [2018-11-07 00:57:06,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-07 00:57:06,920 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:57:06,921 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:57:06,921 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:57:06,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:57:06,921 INFO L82 PathProgramCache]: Analyzing trace with hash -89352888, now seen corresponding path program 1 times [2018-11-07 00:57:06,921 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:57:06,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:57:06,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:57:06,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:57:06,925 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:57:06,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:57:07,480 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:57:07,480 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:57:07,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:57:07,481 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:57:07,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:57:07,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:57:07,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:57:07,483 INFO L87 Difference]: Start difference. First operand 14817 states and 22424 transitions. Second operand 6 states. [2018-11-07 00:57:36,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:57:36,108 INFO L93 Difference]: Finished difference Result 58666 states and 93382 transitions. [2018-11-07 00:57:36,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:57:36,109 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-11-07 00:57:36,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:57:36,318 INFO L225 Difference]: With dead ends: 58666 [2018-11-07 00:57:36,319 INFO L226 Difference]: Without dead ends: 43855 [2018-11-07 00:57:36,403 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-07 00:57:36,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43855 states. [2018-11-07 00:57:37,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43855 to 43759. [2018-11-07 00:57:37,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43759 states. [2018-11-07 00:57:37,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43759 states to 43759 states and 63261 transitions. [2018-11-07 00:57:37,561 INFO L78 Accepts]: Start accepts. Automaton has 43759 states and 63261 transitions. Word has length 125 [2018-11-07 00:57:37,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:57:37,562 INFO L480 AbstractCegarLoop]: Abstraction has 43759 states and 63261 transitions. [2018-11-07 00:57:37,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:57:37,562 INFO L276 IsEmpty]: Start isEmpty. Operand 43759 states and 63261 transitions. [2018-11-07 00:57:37,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-07 00:57:37,568 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:57:37,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:57:37,568 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:57:37,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:57:37,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1894066628, now seen corresponding path program 1 times [2018-11-07 00:57:37,569 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:57:37,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:57:37,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:57:37,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:57:37,571 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:57:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:57:37,922 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:57:37,923 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:57:37,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:57:37,923 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:57:37,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:57:37,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:57:37,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:57:37,925 INFO L87 Difference]: Start difference. First operand 43759 states and 63261 transitions. Second operand 5 states. [2018-11-07 00:57:56,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:57:56,718 INFO L93 Difference]: Finished difference Result 132503 states and 204801 transitions. [2018-11-07 00:57:56,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:57:56,721 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2018-11-07 00:57:56,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:57:57,193 INFO L225 Difference]: With dead ends: 132503 [2018-11-07 00:57:57,193 INFO L226 Difference]: Without dead ends: 88750 [2018-11-07 00:57:57,331 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-07 00:57:57,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88750 states. [2018-11-07 00:57:59,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88750 to 87971. [2018-11-07 00:57:59,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87971 states. [2018-11-07 00:58:00,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87971 states to 87971 states and 121114 transitions. [2018-11-07 00:58:00,084 INFO L78 Accepts]: Start accepts. Automaton has 87971 states and 121114 transitions. Word has length 134 [2018-11-07 00:58:00,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:58:00,085 INFO L480 AbstractCegarLoop]: Abstraction has 87971 states and 121114 transitions. [2018-11-07 00:58:00,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:58:00,085 INFO L276 IsEmpty]: Start isEmpty. Operand 87971 states and 121114 transitions. [2018-11-07 00:58:00,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-11-07 00:58:00,093 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:58:00,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:58:00,094 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:58:00,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:58:00,094 INFO L82 PathProgramCache]: Analyzing trace with hash -711587973, now seen corresponding path program 1 times [2018-11-07 00:58:00,094 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:58:00,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:58:00,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:58:00,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:58:00,097 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:58:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:58:00,349 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:58:00,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:58:00,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:58:00,350 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:58:00,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:58:00,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:58:00,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:58:00,351 INFO L87 Difference]: Start difference. First operand 87971 states and 121114 transitions. Second operand 6 states. [2018-11-07 00:58:20,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:58:20,183 INFO L93 Difference]: Finished difference Result 207661 states and 304071 transitions. [2018-11-07 00:58:20,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:58:20,184 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2018-11-07 00:58:20,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:58:20,587 INFO L225 Difference]: With dead ends: 207661 [2018-11-07 00:58:20,588 INFO L226 Difference]: Without dead ends: 119696 [2018-11-07 00:58:20,775 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:58:20,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119696 states. [2018-11-07 00:58:23,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119696 to 119292. [2018-11-07 00:58:23,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119292 states. [2018-11-07 00:58:23,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119292 states to 119292 states and 160358 transitions. [2018-11-07 00:58:23,662 INFO L78 Accepts]: Start accepts. Automaton has 119292 states and 160358 transitions. Word has length 162 [2018-11-07 00:58:23,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:58:23,662 INFO L480 AbstractCegarLoop]: Abstraction has 119292 states and 160358 transitions. [2018-11-07 00:58:23,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:58:23,663 INFO L276 IsEmpty]: Start isEmpty. Operand 119292 states and 160358 transitions. [2018-11-07 00:58:23,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-11-07 00:58:23,668 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:58:23,669 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 00:58:23,669 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:58:23,669 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:58:23,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1973286022, now seen corresponding path program 1 times [2018-11-07 00:58:23,669 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:58:23,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:58:23,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:58:23,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:58:23,671 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:58:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:58:23,874 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 44 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:58:23,874 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:58:23,874 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:58:23,875 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 201 with the following transitions: [2018-11-07 00:58:23,878 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5358], [5360], [5363], [5371], [5379], [5387], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5877], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 00:58:23,958 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:58:23,959 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:58:28,718 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:58:28,800 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:58:28,801 INFO L272 AbstractInterpreter]: Visited 104 different actions 104 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 00:58:28,814 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:58:28,814 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:58:30,931 INFO L227 lantSequenceWeakener]: Weakened 190 states. On average, predicates are now at 75.28% of their original sizes. [2018-11-07 00:58:30,932 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:58:31,405 INFO L415 sIntCurrentIteration]: We unified 199 AI predicates to 199 [2018-11-07 00:58:31,405 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:58:31,406 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:58:31,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 00:58:31,406 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:58:31,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 00:58:31,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 00:58:31,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 00:58:31,408 INFO L87 Difference]: Start difference. First operand 119292 states and 160358 transitions. Second operand 7 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown