java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label26_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 21:12:21,030 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 21:12:21,032 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 21:12:21,044 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 21:12:21,044 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 21:12:21,045 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 21:12:21,047 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 21:12:21,049 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 21:12:21,050 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 21:12:21,051 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 21:12:21,052 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 21:12:21,052 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 21:12:21,053 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 21:12:21,054 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 21:12:21,055 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 21:12:21,056 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 21:12:21,057 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 21:12:21,059 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 21:12:21,061 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 21:12:21,062 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 21:12:21,064 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 21:12:21,065 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 21:12:21,067 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 21:12:21,074 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 21:12:21,074 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 21:12:21,075 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 21:12:21,076 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 21:12:21,076 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 21:12:21,092 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 21:12:21,093 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 21:12:21,094 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 21:12:21,094 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 21:12:21,094 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 21:12:21,094 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 21:12:21,094 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 21:12:21,095 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 21:12:21,095 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 21:12:21,095 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 21:12:21,095 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 21:12:21,095 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 21:12:21,095 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 21:12:21,096 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 21:12:21,096 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 21:12:21,097 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 21:12:21,097 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 21:12:21,097 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 21:12:21,097 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 21:12:21,097 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 21:12:21,097 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 21:12:21,098 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 21:12:21,098 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 21:12:21,098 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 21:12:21,098 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 21:12:21,099 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 21:12:21,099 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 21:12:21,099 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 21:12:21,099 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 21:12:21,099 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 21:12:21,100 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 21:12:21,100 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 21:12:21,100 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 21:12:21,100 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 21:12:21,100 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 21:12:21,160 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 21:12:21,176 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 21:12:21,181 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 21:12:21,182 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 21:12:21,183 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 21:12:21,184 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label26_true-unreach-call.c [2018-11-07 21:12:21,250 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf823b1fa/f8229d8f9ad048ed972f80e595ac2465/FLAG0c410703f [2018-11-07 21:12:22,035 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 21:12:22,036 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label26_true-unreach-call.c [2018-11-07 21:12:22,074 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf823b1fa/f8229d8f9ad048ed972f80e595ac2465/FLAG0c410703f [2018-11-07 21:12:22,097 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf823b1fa/f8229d8f9ad048ed972f80e595ac2465 [2018-11-07 21:12:22,112 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 21:12:22,114 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 21:12:22,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 21:12:22,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 21:12:22,123 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 21:12:22,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:12:22" (1/1) ... [2018-11-07 21:12:22,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b7a3d1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:22, skipping insertion in model container [2018-11-07 21:12:22,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:12:22" (1/1) ... [2018-11-07 21:12:22,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 21:12:22,274 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 21:12:23,350 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:12:23,354 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 21:12:23,810 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:12:23,841 INFO L193 MainTranslator]: Completed translation [2018-11-07 21:12:23,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:23 WrapperNode [2018-11-07 21:12:23,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 21:12:23,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 21:12:23,844 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 21:12:23,844 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 21:12:23,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:23" (1/1) ... [2018-11-07 21:12:24,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:23" (1/1) ... [2018-11-07 21:12:24,124 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 21:12:24,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 21:12:24,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 21:12:24,125 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 21:12:24,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:23" (1/1) ... [2018-11-07 21:12:24,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:23" (1/1) ... [2018-11-07 21:12:24,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:23" (1/1) ... [2018-11-07 21:12:24,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:23" (1/1) ... [2018-11-07 21:12:24,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:23" (1/1) ... [2018-11-07 21:12:24,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:23" (1/1) ... [2018-11-07 21:12:24,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:23" (1/1) ... [2018-11-07 21:12:24,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 21:12:24,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 21:12:24,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 21:12:24,355 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 21:12:24,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:23" (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 21:12:24,426 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 21:12:24,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 21:12:24,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 21:12:24,427 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 21:12:24,427 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 21:12:24,427 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 21:12:24,428 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 21:12:24,428 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 21:12:24,428 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 21:12:24,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 21:12:24,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 21:12:24,428 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 21:12:24,429 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 21:12:32,769 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 21:12:32,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:12:32 BoogieIcfgContainer [2018-11-07 21:12:32,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 21:12:32,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 21:12:32,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 21:12:32,774 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 21:12:32,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:12:22" (1/3) ... [2018-11-07 21:12:32,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1d8fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:12:32, skipping insertion in model container [2018-11-07 21:12:32,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:23" (2/3) ... [2018-11-07 21:12:32,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1d8fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:12:32, skipping insertion in model container [2018-11-07 21:12:32,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:12:32" (3/3) ... [2018-11-07 21:12:32,779 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label26_true-unreach-call.c [2018-11-07 21:12:32,792 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 21:12:32,804 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 21:12:32,822 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 21:12:32,869 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 21:12:32,869 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 21:12:32,869 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 21:12:32,869 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 21:12:32,869 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 21:12:32,870 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 21:12:32,870 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 21:12:32,870 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 21:12:32,924 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 21:12:32,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-11-07 21:12:32,937 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:12:32,938 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, 1, 1, 1, 1, 1, 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 21:12:32,941 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:12:32,949 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:12:32,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1427857313, now seen corresponding path program 1 times [2018-11-07 21:12:32,952 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:12:33,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:12:33,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:12:33,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:12:33,010 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:12:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:12:33,502 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:12:33,615 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 21:12:33,618 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:12:33,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 21:12:33,619 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:12:33,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 21:12:33,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 21:12:33,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 21:12:33,648 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 21:12:40,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:12:40,245 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 21:12:40,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 21:12:40,247 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2018-11-07 21:12:40,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:12:40,279 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 21:12:40,279 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 21:12:40,288 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 21:12:40,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 21:12:40,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 21:12:40,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 21:12:40,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-11-07 21:12:40,446 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 69 [2018-11-07 21:12:40,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:12:40,447 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-11-07 21:12:40,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 21:12:40,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-11-07 21:12:40,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-07 21:12:40,462 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:12:40,462 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, 2, 2, 2, 2, 2, 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] [2018-11-07 21:12:40,463 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:12:40,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:12:40,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1828983656, now seen corresponding path program 1 times [2018-11-07 21:12:40,463 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:12:40,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:12:40,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:12:40,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:12:40,465 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:12:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:12:40,773 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:12:40,773 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:12:40,773 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:12:40,774 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:12:40,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:12:40,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:12:40,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:12:40,776 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-11-07 21:12:49,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:12:49,329 INFO L93 Difference]: Finished difference Result 4422 states and 8490 transitions. [2018-11-07 21:12:49,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:12:49,330 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-11-07 21:12:49,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:12:49,354 INFO L225 Difference]: With dead ends: 4422 [2018-11-07 21:12:49,354 INFO L226 Difference]: Without dead ends: 2954 [2018-11-07 21:12:49,360 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 21:12:49,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-11-07 21:12:49,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2928. [2018-11-07 21:12:49,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-11-07 21:12:49,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5031 transitions. [2018-11-07 21:12:49,478 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5031 transitions. Word has length 143 [2018-11-07 21:12:49,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:12:49,479 INFO L480 AbstractCegarLoop]: Abstraction has 2928 states and 5031 transitions. [2018-11-07 21:12:49,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:12:49,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5031 transitions. [2018-11-07 21:12:49,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-07 21:12:49,490 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:12:49,491 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, 2, 2, 2, 2, 2, 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] [2018-11-07 21:12:49,491 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:12:49,491 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:12:49,491 INFO L82 PathProgramCache]: Analyzing trace with hash -867833311, now seen corresponding path program 1 times [2018-11-07 21:12:49,492 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:12:49,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:12:49,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:12:49,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:12:49,494 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:12:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:12:49,718 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:12:49,718 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:12:49,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 21:12:49,719 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:12:49,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 21:12:49,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 21:12:49,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 21:12:49,721 INFO L87 Difference]: Start difference. First operand 2928 states and 5031 transitions. Second operand 5 states. [2018-11-07 21:12:59,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:12:59,028 INFO L93 Difference]: Finished difference Result 10268 states and 17658 transitions. [2018-11-07 21:12:59,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 21:12:59,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2018-11-07 21:12:59,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:12:59,080 INFO L225 Difference]: With dead ends: 10268 [2018-11-07 21:12:59,080 INFO L226 Difference]: Without dead ends: 7346 [2018-11-07 21:12:59,097 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 21:12:59,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7346 states. [2018-11-07 21:12:59,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7346 to 7268. [2018-11-07 21:12:59,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7268 states. [2018-11-07 21:12:59,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7268 states to 7268 states and 10819 transitions. [2018-11-07 21:12:59,318 INFO L78 Accepts]: Start accepts. Automaton has 7268 states and 10819 transitions. Word has length 146 [2018-11-07 21:12:59,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:12:59,319 INFO L480 AbstractCegarLoop]: Abstraction has 7268 states and 10819 transitions. [2018-11-07 21:12:59,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 21:12:59,319 INFO L276 IsEmpty]: Start isEmpty. Operand 7268 states and 10819 transitions. [2018-11-07 21:12:59,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-11-07 21:12:59,324 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:12:59,325 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, 2, 2, 2, 2, 2, 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] [2018-11-07 21:12:59,325 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:12:59,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:12:59,325 INFO L82 PathProgramCache]: Analyzing trace with hash -317879939, now seen corresponding path program 1 times [2018-11-07 21:12:59,326 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:12:59,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:12:59,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:12:59,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:12:59,327 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:12:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:12:59,591 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:12:59,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:12:59,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 21:12:59,592 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:12:59,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 21:12:59,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 21:12:59,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:12:59,593 INFO L87 Difference]: Start difference. First operand 7268 states and 10819 transitions. Second operand 4 states. [2018-11-07 21:13:07,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:13:07,122 INFO L93 Difference]: Finished difference Result 25196 states and 39361 transitions. [2018-11-07 21:13:07,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 21:13:07,123 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2018-11-07 21:13:07,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:13:07,210 INFO L225 Difference]: With dead ends: 25196 [2018-11-07 21:13:07,210 INFO L226 Difference]: Without dead ends: 17934 [2018-11-07 21:13:07,257 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:13:07,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17934 states. [2018-11-07 21:13:07,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17934 to 17929. [2018-11-07 21:13:07,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17929 states. [2018-11-07 21:13:07,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17929 states to 17929 states and 25578 transitions. [2018-11-07 21:13:07,717 INFO L78 Accepts]: Start accepts. Automaton has 17929 states and 25578 transitions. Word has length 176 [2018-11-07 21:13:07,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:13:07,718 INFO L480 AbstractCegarLoop]: Abstraction has 17929 states and 25578 transitions. [2018-11-07 21:13:07,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 21:13:07,718 INFO L276 IsEmpty]: Start isEmpty. Operand 17929 states and 25578 transitions. [2018-11-07 21:13:07,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-11-07 21:13:07,749 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:13:07,750 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 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 21:13:07,750 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:13:07,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:13:07,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1232784131, now seen corresponding path program 1 times [2018-11-07 21:13:07,751 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:13:07,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:13:07,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:13:07,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:13:07,752 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:13:07,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:13:08,320 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 192 proven. 267 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 21:13:08,320 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:13:08,320 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:13:08,321 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 369 with the following transitions: [2018-11-07 21:13:08,323 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2075], [2077], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2196], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2228], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2280], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 21:13:08,379 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:13:08,379 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:13:09,011 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:13:09,013 INFO L272 AbstractInterpreter]: Visited 117 different actions 117 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 21:13:09,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:13:09,071 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:13:09,844 INFO L227 lantSequenceWeakener]: Weakened 356 states. On average, predicates are now at 77.93% of their original sizes. [2018-11-07 21:13:09,844 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:13:10,076 INFO L415 sIntCurrentIteration]: We unified 367 AI predicates to 367 [2018-11-07 21:13:10,077 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:13:10,077 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:13:10,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2018-11-07 21:13:10,078 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:13:10,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 21:13:10,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 21:13:10,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 21:13:10,079 INFO L87 Difference]: Start difference. First operand 17929 states and 25578 transitions. Second operand 7 states. [2018-11-07 21:13:17,471 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:13:39,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:13:39,824 INFO L93 Difference]: Finished difference Result 36557 states and 51911 transitions. [2018-11-07 21:13:39,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:13:39,824 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 368 [2018-11-07 21:13:39,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:13:39,895 INFO L225 Difference]: With dead ends: 36557 [2018-11-07 21:13:39,896 INFO L226 Difference]: Without dead ends: 18634 [2018-11-07 21:13:39,942 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 368 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 21:13:39,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18634 states. [2018-11-07 21:13:40,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18634 to 18632. [2018-11-07 21:13:40,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18632 states. [2018-11-07 21:13:40,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18632 states to 18632 states and 26293 transitions. [2018-11-07 21:13:40,374 INFO L78 Accepts]: Start accepts. Automaton has 18632 states and 26293 transitions. Word has length 368 [2018-11-07 21:13:40,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:13:40,374 INFO L480 AbstractCegarLoop]: Abstraction has 18632 states and 26293 transitions. [2018-11-07 21:13:40,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 21:13:40,377 INFO L276 IsEmpty]: Start isEmpty. Operand 18632 states and 26293 transitions. [2018-11-07 21:13:40,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2018-11-07 21:13:40,420 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:13:40,421 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:13:40,421 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:13:40,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:13:40,424 INFO L82 PathProgramCache]: Analyzing trace with hash -685972603, now seen corresponding path program 1 times [2018-11-07 21:13:40,424 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:13:40,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:13:40,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:13:40,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:13:40,429 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:13:40,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:13:41,039 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 21:13:41,249 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 21:13:41,467 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 21:13:41,903 WARN L179 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 21:13:42,396 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 312 proven. 413 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-11-07 21:13:42,396 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:13:42,396 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:13:42,397 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 556 with the following transitions: [2018-11-07 21:13:42,397 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2075], [2077], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2196], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2228], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2280], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 21:13:42,405 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:13:42,405 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:13:42,914 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:13:42,914 INFO L272 AbstractInterpreter]: Visited 197 different actions 387 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 21:13:42,941 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:13:42,941 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:13:44,554 INFO L227 lantSequenceWeakener]: Weakened 240 states. On average, predicates are now at 78.09% of their original sizes. [2018-11-07 21:13:44,554 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:13:46,786 INFO L415 sIntCurrentIteration]: We unified 554 AI predicates to 554 [2018-11-07 21:13:46,786 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:13:46,786 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:13:46,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [11] total 26 [2018-11-07 21:13:46,787 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:13:46,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 21:13:46,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 21:13:46,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-11-07 21:13:46,789 INFO L87 Difference]: Start difference. First operand 18632 states and 26293 transitions. Second operand 17 states. [2018-11-07 21:14:11,883 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:14:47,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:14:47,078 INFO L93 Difference]: Finished difference Result 39747 states and 55514 transitions. [2018-11-07 21:14:47,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-07 21:14:47,078 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 555 [2018-11-07 21:14:47,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:14:47,145 INFO L225 Difference]: With dead ends: 39747 [2018-11-07 21:14:47,145 INFO L226 Difference]: Without dead ends: 21824 [2018-11-07 21:14:47,190 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 563 GetRequests, 489 SyntacticMatches, 50 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2018-11-07 21:14:47,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21824 states. [2018-11-07 21:14:47,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21824 to 20878. [2018-11-07 21:14:47,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20878 states. [2018-11-07 21:14:47,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20878 states to 20878 states and 28581 transitions. [2018-11-07 21:14:47,568 INFO L78 Accepts]: Start accepts. Automaton has 20878 states and 28581 transitions. Word has length 555 [2018-11-07 21:14:47,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:14:47,569 INFO L480 AbstractCegarLoop]: Abstraction has 20878 states and 28581 transitions. [2018-11-07 21:14:47,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 21:14:47,569 INFO L276 IsEmpty]: Start isEmpty. Operand 20878 states and 28581 transitions. [2018-11-07 21:14:47,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 897 [2018-11-07 21:14:47,629 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:14:47,630 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:14:47,630 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:14:47,630 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:14:47,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1396458412, now seen corresponding path program 1 times [2018-11-07 21:14:47,631 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:14:47,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:14:47,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:14:47,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:14:47,632 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:14:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:14:48,329 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:14:50,401 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 348 proven. 381 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-11-07 21:14:50,401 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:14:50,401 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:14:50,402 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 897 with the following transitions: [2018-11-07 21:14:50,403 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2075], [2077], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2196], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2228], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2280], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-07 21:14:50,416 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:14:50,416 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:14:51,396 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:14:51,397 INFO L272 AbstractInterpreter]: Visited 538 different actions 1070 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 21:14:51,436 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:14:51,436 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:15:00,569 INFO L227 lantSequenceWeakener]: Weakened 587 states. On average, predicates are now at 77.8% of their original sizes. [2018-11-07 21:15:00,570 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:15:01,290 INFO L415 sIntCurrentIteration]: We unified 895 AI predicates to 895 [2018-11-07 21:15:01,291 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:15:01,291 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:15:01,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [31] imperfect sequences [11] total 40 [2018-11-07 21:15:01,292 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:15:01,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-07 21:15:01,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-07 21:15:01,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=810, Unknown=0, NotChecked=0, Total=930 [2018-11-07 21:15:01,294 INFO L87 Difference]: Start difference. First operand 20878 states and 28581 transitions. Second operand 31 states. [2018-11-07 21:15:42,848 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 21:15:56,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-11-07 21:15:56,437 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 21:15:56,442 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 21:15:56,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:15:56 BoogieIcfgContainer [2018-11-07 21:15:56,442 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 21:15:56,443 INFO L168 Benchmark]: Toolchain (without parser) took 214330.76 ms. Allocated memory was 1.5 GB in the beginning and 5.4 GB in the end (delta: 3.9 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -665.1 MB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2018-11-07 21:15:56,444 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 21:15:56,445 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1723.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-07 21:15:56,446 INFO L168 Benchmark]: Boogie Procedure Inliner took 281.17 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 742.4 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -932.5 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. [2018-11-07 21:15:56,447 INFO L168 Benchmark]: Boogie Preprocessor took 229.44 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-11-07 21:15:56,448 INFO L168 Benchmark]: RCFGBuilder took 8414.69 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 516.5 MB). Peak memory consumption was 516.5 MB. Max. memory is 7.1 GB. [2018-11-07 21:15:56,448 INFO L168 Benchmark]: TraceAbstraction took 203672.15 ms. Allocated memory was 2.2 GB in the beginning and 5.4 GB in the end (delta: 3.2 GB). Free memory was 1.6 GB in the beginning and 2.0 GB in the end (delta: -411.1 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-11-07 21:15:56,454 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1723.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 281.17 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 742.4 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -932.5 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 229.44 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8414.69 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 516.5 MB). Peak memory consumption was 516.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203672.15 ms. Allocated memory was 2.2 GB in the beginning and 5.4 GB in the end (delta: 3.2 GB). Free memory was 1.6 GB in the beginning and 2.0 GB in the end (delta: -411.1 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 195]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 195). Cancelled while BasicCegarLoop was constructing difference of abstraction (20878states) and FLOYD_HOARE automaton (currently 36 states, 31 states before enhancement),while ReachableStatesComputation was computing reachable states (23642 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 203.5s OverallTime, 7 OverallIterations, 5 TraceHistogramMax, 177.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2746 SDtfs, 21979 SDslu, 1293 SDs, 0 SdLazy, 42594 SolverSat, 5778 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 69.7s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1886 GetRequests, 1727 SyntacticMatches, 53 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1337 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20878occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.3s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.997988015224896 AbsIntWeakeningRatio, 0.06387665198237885 AbsIntAvgWeakeningVarsNumRemoved, 17.0170704845815 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 6 MinimizatonAttempts, 1057 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 2353 NumberOfCodeBlocks, 2353 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 2346 ConstructedInterpolants, 0 QuantifiedInterpolants, 4617303 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 1239/2300 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown