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/Problem16_label43_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:15:56,978 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:15:56,980 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:15:56,997 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:15:56,998 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:15:57,000 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:15:57,001 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:15:57,004 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:15:57,006 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:15:57,009 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:15:57,011 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:15:57,012 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:15:57,013 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:15:57,014 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:15:57,022 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:15:57,023 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:15:57,027 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:15:57,029 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:15:57,035 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:15:57,036 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:15:57,038 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:15:57,042 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:15:57,046 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:15:57,046 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:15:57,047 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:15:57,047 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:15:57,049 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:15:57,050 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:15:57,051 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:15:57,052 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:15:57,052 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:15:57,054 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:15:57,054 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:15:57,055 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:15:57,056 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:15:57,056 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:15:57,057 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 18:15:57,086 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:15:57,086 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:15:57,087 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:15:57,088 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:15:57,088 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:15:57,088 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:15:57,088 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:15:57,089 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:15:57,089 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:15:57,089 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:15:57,089 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:15:57,089 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:15:57,090 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:15:57,090 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:15:57,091 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:15:57,091 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:15:57,091 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:15:57,091 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:15:57,091 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:15:57,092 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:15:57,092 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:15:57,092 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:15:57,092 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:15:57,093 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:15:57,093 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:15:57,093 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:15:57,093 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:15:57,093 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:15:57,094 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:15:57,094 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:15:57,094 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:15:57,094 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:15:57,094 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:15:57,095 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:15:57,095 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:15:57,139 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:15:57,156 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:15:57,162 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:15:57,163 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:15:57,164 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:15:57,165 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label43_false-unreach-call.c [2018-11-07 18:15:57,237 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbc1b54e4/d4f4d77572c84a5a898be8fd85f5277d/FLAG24dd8919c [2018-11-07 18:15:57,946 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:15:57,948 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label43_false-unreach-call.c [2018-11-07 18:15:57,968 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbc1b54e4/d4f4d77572c84a5a898be8fd85f5277d/FLAG24dd8919c [2018-11-07 18:15:57,987 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbc1b54e4/d4f4d77572c84a5a898be8fd85f5277d [2018-11-07 18:15:57,999 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:15:58,001 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:15:58,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:15:58,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:15:58,007 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:15:58,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:15:57" (1/1) ... [2018-11-07 18:15:58,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d100604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:58, skipping insertion in model container [2018-11-07 18:15:58,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:15:57" (1/1) ... [2018-11-07 18:15:58,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:15:58,111 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:15:58,816 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:15:58,821 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:15:59,096 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:15:59,117 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:15:59,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:59 WrapperNode [2018-11-07 18:15:59,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:15:59,119 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:15:59,119 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:15:59,119 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:15:59,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:59" (1/1) ... [2018-11-07 18:15:59,301 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:59" (1/1) ... [2018-11-07 18:15:59,318 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:15:59,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:15:59,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:15:59,319 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:15:59,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:59" (1/1) ... [2018-11-07 18:15:59,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:59" (1/1) ... [2018-11-07 18:15:59,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:59" (1/1) ... [2018-11-07 18:15:59,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:59" (1/1) ... [2018-11-07 18:15:59,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:59" (1/1) ... [2018-11-07 18:15:59,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:59" (1/1) ... [2018-11-07 18:15:59,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:59" (1/1) ... [2018-11-07 18:15:59,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:15:59,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:15:59,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:15:59,466 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:15:59,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:59" (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 18:15:59,537 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:15:59,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:15:59,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:15:59,538 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 18:15:59,538 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 18:15:59,538 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:15:59,538 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:15:59,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:15:59,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:15:59,539 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:15:59,539 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:16:06,140 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:16:06,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:16:06 BoogieIcfgContainer [2018-11-07 18:16:06,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:16:06,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:16:06,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:16:06,146 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:16:06,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:15:57" (1/3) ... [2018-11-07 18:16:06,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67529a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:16:06, skipping insertion in model container [2018-11-07 18:16:06,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:59" (2/3) ... [2018-11-07 18:16:06,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67529a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:16:06, skipping insertion in model container [2018-11-07 18:16:06,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:16:06" (3/3) ... [2018-11-07 18:16:06,150 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label43_false-unreach-call.c [2018-11-07 18:16:06,161 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:16:06,171 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:16:06,190 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:16:06,233 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:16:06,233 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:16:06,233 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:16:06,234 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:16:06,234 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:16:06,234 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:16:06,234 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:16:06,234 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:16:06,268 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 18:16:06,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-07 18:16:06,275 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:16:06,277 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:16:06,279 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:16:06,285 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:16:06,285 INFO L82 PathProgramCache]: Analyzing trace with hash 447035884, now seen corresponding path program 1 times [2018-11-07 18:16:06,287 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:16:06,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:16:06,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:16:06,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:16:06,342 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:16:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:16:06,710 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:16:06,786 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 18:16:06,788 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:16:06,789 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:16:06,789 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:16:06,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:16:06,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:16:06,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:16:06,810 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 18:16:10,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:16:10,226 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 18:16:10,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:16:10,228 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-11-07 18:16:10,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:16:10,250 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 18:16:10,250 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 18:16:10,259 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 18:16:10,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 18:16:10,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 18:16:10,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 18:16:10,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1353 transitions. [2018-11-07 18:16:10,364 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1353 transitions. Word has length 16 [2018-11-07 18:16:10,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:16:10,365 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1353 transitions. [2018-11-07 18:16:10,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:16:10,365 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1353 transitions. [2018-11-07 18:16:10,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-11-07 18:16:10,371 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:16:10,372 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:16:10,372 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:16:10,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:16:10,373 INFO L82 PathProgramCache]: Analyzing trace with hash 803475559, now seen corresponding path program 1 times [2018-11-07 18:16:10,373 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:16:10,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:16:10,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:16:10,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:16:10,375 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:16:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:16:10,747 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:16:10,748 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:16:10,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:16:10,748 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:16:10,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:16:10,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:16:10,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:16:10,752 INFO L87 Difference]: Start difference. First operand 744 states and 1353 transitions. Second operand 6 states. [2018-11-07 18:16:17,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:16:17,964 INFO L93 Difference]: Finished difference Result 2184 states and 3997 transitions. [2018-11-07 18:16:17,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:16:17,966 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2018-11-07 18:16:17,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:16:17,983 INFO L225 Difference]: With dead ends: 2184 [2018-11-07 18:16:17,984 INFO L226 Difference]: Without dead ends: 1446 [2018-11-07 18:16:17,990 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 18:16:17,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2018-11-07 18:16:18,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1425. [2018-11-07 18:16:18,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2018-11-07 18:16:18,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2267 transitions. [2018-11-07 18:16:18,070 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2267 transitions. Word has length 109 [2018-11-07 18:16:18,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:16:18,071 INFO L480 AbstractCegarLoop]: Abstraction has 1425 states and 2267 transitions. [2018-11-07 18:16:18,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:16:18,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2267 transitions. [2018-11-07 18:16:18,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-11-07 18:16:18,082 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:16:18,083 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:16:18,083 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:16:18,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:16:18,083 INFO L82 PathProgramCache]: Analyzing trace with hash -983617648, now seen corresponding path program 1 times [2018-11-07 18:16:18,084 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:16:18,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:16:18,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:16:18,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:16:18,085 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:16:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:16:18,436 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:16:18,437 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:16:18,437 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:16:18,438 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 221 with the following transitions: [2018-11-07 18:16:18,440 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [207], [209], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:16:18,488 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:16:18,489 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:16:19,423 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:16:19,426 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 18:16:19,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:16:19,471 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:16:20,465 INFO L227 lantSequenceWeakener]: Weakened 198 states. On average, predicates are now at 77.35% of their original sizes. [2018-11-07 18:16:20,465 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:16:21,442 INFO L415 sIntCurrentIteration]: We unified 219 AI predicates to 219 [2018-11-07 18:16:21,442 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:16:21,443 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:16:21,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 18:16:21,443 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:16:21,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 18:16:21,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 18:16:21,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 18:16:21,445 INFO L87 Difference]: Start difference. First operand 1425 states and 2267 transitions. Second operand 10 states. [2018-11-07 18:16:25,751 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:16:51,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:16:51,449 INFO L93 Difference]: Finished difference Result 3187 states and 5096 transitions. [2018-11-07 18:16:51,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 18:16:51,449 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 220 [2018-11-07 18:16:51,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:16:51,460 INFO L225 Difference]: With dead ends: 3187 [2018-11-07 18:16:51,460 INFO L226 Difference]: Without dead ends: 1768 [2018-11-07 18:16:51,465 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 223 GetRequests, 191 SyntacticMatches, 20 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-07 18:16:51,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2018-11-07 18:16:51,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1763. [2018-11-07 18:16:51,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2018-11-07 18:16:51,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2612 transitions. [2018-11-07 18:16:51,518 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2612 transitions. Word has length 220 [2018-11-07 18:16:51,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:16:51,519 INFO L480 AbstractCegarLoop]: Abstraction has 1763 states and 2612 transitions. [2018-11-07 18:16:51,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 18:16:51,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2612 transitions. [2018-11-07 18:16:51,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-11-07 18:16:51,524 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:16:51,525 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:16:51,525 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:16:51,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:16:51,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1465497490, now seen corresponding path program 1 times [2018-11-07 18:16:51,526 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:16:51,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:16:51,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:16:51,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:16:51,527 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:16:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:16:51,971 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 33 proven. 197 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 18:16:51,971 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:16:51,972 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:16:51,972 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 313 with the following transitions: [2018-11-07 18:16:51,972 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [207], [209], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:16:51,977 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:16:51,978 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:16:52,065 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:16:52,310 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:16:52,311 INFO L272 AbstractInterpreter]: Visited 120 different actions 347 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:16:52,318 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:16:52,318 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:16:52,983 INFO L227 lantSequenceWeakener]: Weakened 92 states. On average, predicates are now at 77.59% of their original sizes. [2018-11-07 18:16:52,984 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:16:54,051 INFO L415 sIntCurrentIteration]: We unified 311 AI predicates to 311 [2018-11-07 18:16:54,051 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:16:54,052 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:16:54,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-07 18:16:54,052 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:16:54,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-07 18:16:54,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-07 18:16:54,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2018-11-07 18:16:54,055 INFO L87 Difference]: Start difference. First operand 1763 states and 2612 transitions. Second operand 23 states. [2018-11-07 18:17:39,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:17:39,354 INFO L93 Difference]: Finished difference Result 4844 states and 7649 transitions. [2018-11-07 18:17:39,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-07 18:17:39,354 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 312 [2018-11-07 18:17:39,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:17:39,371 INFO L225 Difference]: With dead ends: 4844 [2018-11-07 18:17:39,371 INFO L226 Difference]: Without dead ends: 3425 [2018-11-07 18:17:39,377 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 327 GetRequests, 286 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=275, Invalid=1207, Unknown=0, NotChecked=0, Total=1482 [2018-11-07 18:17:39,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3425 states. [2018-11-07 18:17:39,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3425 to 2485. [2018-11-07 18:17:39,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2485 states. [2018-11-07 18:17:39,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 3365 transitions. [2018-11-07 18:17:39,453 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 3365 transitions. Word has length 312 [2018-11-07 18:17:39,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:17:39,454 INFO L480 AbstractCegarLoop]: Abstraction has 2485 states and 3365 transitions. [2018-11-07 18:17:39,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-07 18:17:39,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 3365 transitions. [2018-11-07 18:17:39,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-11-07 18:17:39,460 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:17:39,461 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:17:39,461 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:17:39,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:17:39,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1959506058, now seen corresponding path program 1 times [2018-11-07 18:17:39,461 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:17:39,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:17:39,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:17:39,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:17:39,463 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:17:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:17:39,784 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:17:40,301 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 33 proven. 217 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 18:17:40,301 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:17:40,301 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:17:40,301 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 349 with the following transitions: [2018-11-07 18:17:40,302 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [207], [209], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:17:40,307 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:17:40,307 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:17:40,389 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:17:40,618 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:17:40,618 INFO L272 AbstractInterpreter]: Visited 137 different actions 398 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:17:40,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:17:40,628 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:17:41,195 INFO L227 lantSequenceWeakener]: Weakened 92 states. On average, predicates are now at 77.59% of their original sizes. [2018-11-07 18:17:41,196 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:17:41,836 INFO L415 sIntCurrentIteration]: We unified 347 AI predicates to 347 [2018-11-07 18:17:41,837 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:17:41,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:17:41,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-07 18:17:41,838 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:17:41,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-07 18:17:41,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-07 18:17:41,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2018-11-07 18:17:41,840 INFO L87 Difference]: Start difference. First operand 2485 states and 3365 transitions. Second operand 23 states. [2018-11-07 18:18:19,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:18:19,145 INFO L93 Difference]: Finished difference Result 5859 states and 8638 transitions. [2018-11-07 18:18:19,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 18:18:19,145 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 348 [2018-11-07 18:18:19,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:18:19,163 INFO L225 Difference]: With dead ends: 5859 [2018-11-07 18:18:19,163 INFO L226 Difference]: Without dead ends: 4056 [2018-11-07 18:18:19,170 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 362 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=265, Invalid=1141, Unknown=0, NotChecked=0, Total=1406 [2018-11-07 18:18:19,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4056 states. [2018-11-07 18:18:19,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4056 to 4043. [2018-11-07 18:18:19,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4043 states. [2018-11-07 18:18:19,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4043 states to 4043 states and 4982 transitions. [2018-11-07 18:18:19,274 INFO L78 Accepts]: Start accepts. Automaton has 4043 states and 4982 transitions. Word has length 348 [2018-11-07 18:18:19,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:18:19,275 INFO L480 AbstractCegarLoop]: Abstraction has 4043 states and 4982 transitions. [2018-11-07 18:18:19,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-07 18:18:19,275 INFO L276 IsEmpty]: Start isEmpty. Operand 4043 states and 4982 transitions. [2018-11-07 18:18:19,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2018-11-07 18:18:19,288 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:18:19,288 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:19,288 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:18:19,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:18:19,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1076667734, now seen corresponding path program 1 times [2018-11-07 18:18:19,289 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:18:19,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:18:19,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:18:19,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:18:19,290 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:18:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:18:19,747 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 33 proven. 217 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 18:18:19,748 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:18:19,748 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:18:19,748 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 461 with the following transitions: [2018-11-07 18:18:19,749 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [207], [209], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:18:19,755 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:18:19,755 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:18:21,024 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:18:21,024 INFO L272 AbstractInterpreter]: Visited 249 different actions 492 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 18:18:21,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:18:21,032 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:18:21,512 INFO L227 lantSequenceWeakener]: Weakened 230 states. On average, predicates are now at 77.49% of their original sizes. [2018-11-07 18:18:21,512 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:18:22,901 INFO L415 sIntCurrentIteration]: We unified 459 AI predicates to 459 [2018-11-07 18:18:22,902 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:18:22,902 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:18:22,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-07 18:18:22,903 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:18:22,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 18:18:22,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 18:18:22,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-11-07 18:18:22,906 INFO L87 Difference]: Start difference. First operand 4043 states and 4982 transitions. Second operand 18 states. [2018-11-07 18:18:24,471 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:18:37,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:18:37,771 INFO L93 Difference]: Finished difference Result 7171 states and 9421 transitions. [2018-11-07 18:18:37,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 18:18:37,771 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 460 [2018-11-07 18:18:37,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:18:37,791 INFO L225 Difference]: With dead ends: 7171 [2018-11-07 18:18:37,791 INFO L226 Difference]: Without dead ends: 4679 [2018-11-07 18:18:37,799 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 475 GetRequests, 399 SyntacticMatches, 44 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2018-11-07 18:18:37,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4679 states. [2018-11-07 18:18:37,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4679 to 4674. [2018-11-07 18:18:37,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4674 states. [2018-11-07 18:18:37,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4674 states to 4674 states and 5647 transitions. [2018-11-07 18:18:37,913 INFO L78 Accepts]: Start accepts. Automaton has 4674 states and 5647 transitions. Word has length 460 [2018-11-07 18:18:37,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:18:37,914 INFO L480 AbstractCegarLoop]: Abstraction has 4674 states and 5647 transitions. [2018-11-07 18:18:37,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 18:18:37,914 INFO L276 IsEmpty]: Start isEmpty. Operand 4674 states and 5647 transitions. [2018-11-07 18:18:37,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2018-11-07 18:18:37,929 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:18:37,929 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:37,930 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:18:37,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:18:37,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1424439578, now seen corresponding path program 1 times [2018-11-07 18:18:37,930 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:18:37,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:18:37,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:18:37,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:18:37,932 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:18:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:18:38,352 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:18:38,694 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 33 proven. 217 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 18:18:38,694 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:18:38,694 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:18:38,694 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 469 with the following transitions: [2018-11-07 18:18:38,695 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [207], [209], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:18:38,700 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:18:38,700 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:18:41,533 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:18:41,533 INFO L272 AbstractInterpreter]: Visited 257 different actions 2265 times. Merged at 5 different actions 40 times. Widened at 1 different actions 4 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:18:41,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:18:41,546 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:18:42,258 INFO L227 lantSequenceWeakener]: Weakened 115 states. On average, predicates are now at 77.59% of their original sizes. [2018-11-07 18:18:42,259 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:18:42,680 INFO L415 sIntCurrentIteration]: We unified 467 AI predicates to 467 [2018-11-07 18:18:42,680 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:18:42,681 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:18:42,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-07 18:18:42,681 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:18:42,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-07 18:18:42,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-07 18:18:42,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2018-11-07 18:18:42,683 INFO L87 Difference]: Start difference. First operand 4674 states and 5647 transitions. Second operand 23 states. [2018-11-07 18:18:44,760 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:19:03,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:19:03,142 INFO L93 Difference]: Finished difference Result 7807 states and 10099 transitions. [2018-11-07 18:19:03,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-07 18:19:03,142 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 468 [2018-11-07 18:19:03,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:19:03,161 INFO L225 Difference]: With dead ends: 7807 [2018-11-07 18:19:03,161 INFO L226 Difference]: Without dead ends: 5315 [2018-11-07 18:19:03,168 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 482 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=290, Invalid=1116, Unknown=0, NotChecked=0, Total=1406 [2018-11-07 18:19:03,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5315 states. [2018-11-07 18:19:03,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5315 to 5307. [2018-11-07 18:19:03,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5307 states. [2018-11-07 18:19:03,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5307 states to 5307 states and 6320 transitions. [2018-11-07 18:19:03,286 INFO L78 Accepts]: Start accepts. Automaton has 5307 states and 6320 transitions. Word has length 468 [2018-11-07 18:19:03,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:19:03,286 INFO L480 AbstractCegarLoop]: Abstraction has 5307 states and 6320 transitions. [2018-11-07 18:19:03,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-07 18:19:03,287 INFO L276 IsEmpty]: Start isEmpty. Operand 5307 states and 6320 transitions. [2018-11-07 18:19:03,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2018-11-07 18:19:03,306 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:19:03,306 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:19:03,307 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:19:03,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:19:03,307 INFO L82 PathProgramCache]: Analyzing trace with hash -284301652, now seen corresponding path program 1 times [2018-11-07 18:19:03,307 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:19:03,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:19:03,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:19:03,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:19:03,308 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:19:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:19:04,951 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 136 proven. 200 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-11-07 18:19:04,952 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:19:04,952 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:19:04,952 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 553 with the following transitions: [2018-11-07 18:19:04,953 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [207], [209], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:19:04,956 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:19:04,957 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:19:05,006 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:19:06,131 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:19:06,132 INFO L272 AbstractInterpreter]: Visited 251 different actions 996 times. Merged at 7 different actions 28 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 18:19:06,146 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:19:06,147 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:19:06,147 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:19:06,147 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:19:06,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:19:06,157 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:19:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:19:06,334 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:19:07,368 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 494 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-11-07 18:19:07,368 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:19:08,613 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 136 proven. 200 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-11-07 18:19:08,636 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:19:08,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2018-11-07 18:19:08,637 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:19:08,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 18:19:08,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 18:19:08,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2018-11-07 18:19:08,639 INFO L87 Difference]: Start difference. First operand 5307 states and 6320 transitions. Second operand 16 states. [2018-11-07 18:19:25,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:19:25,169 INFO L93 Difference]: Finished difference Result 11474 states and 15261 transitions. [2018-11-07 18:19:25,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-11-07 18:19:25,170 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 552 [2018-11-07 18:19:25,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:19:25,194 INFO L225 Difference]: With dead ends: 11474 [2018-11-07 18:19:25,194 INFO L226 Difference]: Without dead ends: 4286 [2018-11-07 18:19:25,245 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1207 GetRequests, 1141 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1387 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=955, Invalid=3601, Unknown=0, NotChecked=0, Total=4556 [2018-11-07 18:19:25,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4286 states. [2018-11-07 18:19:25,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4286 to 4075. [2018-11-07 18:19:25,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4075 states. [2018-11-07 18:19:25,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4075 states to 4075 states and 4587 transitions. [2018-11-07 18:19:25,351 INFO L78 Accepts]: Start accepts. Automaton has 4075 states and 4587 transitions. Word has length 552 [2018-11-07 18:19:25,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:19:25,351 INFO L480 AbstractCegarLoop]: Abstraction has 4075 states and 4587 transitions. [2018-11-07 18:19:25,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 18:19:25,352 INFO L276 IsEmpty]: Start isEmpty. Operand 4075 states and 4587 transitions. [2018-11-07 18:19:25,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2018-11-07 18:19:25,372 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:19:25,373 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 18:19:25,373 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:19:25,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:19:25,374 INFO L82 PathProgramCache]: Analyzing trace with hash -982695293, now seen corresponding path program 1 times [2018-11-07 18:19:25,374 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:19:25,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:19:25,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:19:25,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:19:25,375 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:19:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:19:25,898 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:19:26,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 67 proven. 653 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2018-11-07 18:19:26,809 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:19:26,809 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:19:26,809 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 686 with the following transitions: [2018-11-07 18:19:26,810 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [207], [209], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [796], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:19:26,814 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:19:26,814 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:19:26,912 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:19:29,614 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:19:29,614 INFO L272 AbstractInterpreter]: Visited 259 different actions 2556 times. Merged at 7 different actions 65 times. Widened at 1 different actions 5 times. Found 10 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 18:19:29,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:19:29,619 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:19:30,641 INFO L227 lantSequenceWeakener]: Weakened 191 states. On average, predicates are now at 77.43% of their original sizes. [2018-11-07 18:19:30,641 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:19:31,515 INFO L415 sIntCurrentIteration]: We unified 684 AI predicates to 684 [2018-11-07 18:19:31,515 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:19:31,515 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:19:31,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-11-07 18:19:31,516 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:19:31,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 18:19:31,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 18:19:31,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2018-11-07 18:19:31,518 INFO L87 Difference]: Start difference. First operand 4075 states and 4587 transitions. Second operand 20 states. Received shutdown request... [2018-11-07 18:19:34,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 18:19:34,673 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:19:34,678 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:19:34,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:19:34 BoogieIcfgContainer [2018-11-07 18:19:34,679 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:19:34,680 INFO L168 Benchmark]: Toolchain (without parser) took 216680.34 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -759.1 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-07 18:19:34,681 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 18:19:34,681 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1116.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 18:19:34,682 INFO L168 Benchmark]: Boogie Procedure Inliner took 199.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -881.4 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2018-11-07 18:19:34,683 INFO L168 Benchmark]: Boogie Preprocessor took 146.69 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 18:19:34,683 INFO L168 Benchmark]: RCFGBuilder took 6675.80 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 267.0 MB). Peak memory consumption was 267.0 MB. Max. memory is 7.1 GB. [2018-11-07 18:19:34,684 INFO L168 Benchmark]: TraceAbstraction took 208536.72 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 2.0 GB in the beginning and 2.2 GB in the end (delta: -229.2 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-07 18:19:34,689 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1116.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 199.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -881.4 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 146.69 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 6675.80 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 267.0 MB). Peak memory consumption was 267.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208536.72 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 2.0 GB in the beginning and 2.2 GB in the end (delta: -229.2 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 34]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 34). Cancelled while BasicCegarLoop was constructing difference of abstraction (4075states) and FLOYD_HOARE automaton (currently 9 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (93 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 208.4s OverallTime, 9 OverallIterations, 6 TraceHistogramMax, 178.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2402 SDtfs, 27140 SDslu, 2213 SDs, 0 SdLazy, 33911 SolverSat, 7542 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 68.5s Time, PredicateUnifierStatistics: 12 DeclaredPredicates, 3780 GetRequests, 3459 SyntacticMatches, 71 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3078 ImplicationChecksByTransitivity, 11.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5307occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.8s AbstIntTime, 7 AbstIntIterations, 6 AbstIntStrong, 0.9975391024481084 AbsIntWeakeningRatio, 0.07961399276236429 AbsIntAvgWeakeningVarsNumRemoved, 10.55287494973864 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 1203 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 3722 NumberOfCodeBlocks, 3722 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 4263 ConstructedInterpolants, 0 QuantifiedInterpolants, 8828891 SizeOfPredicates, 1 NumberOfNonLiveVariables, 818 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 2290/4281 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown