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/Problem11_label52_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:13:36,091 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:13:36,093 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:13:36,113 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:13:36,113 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:13:36,114 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:13:36,118 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:13:36,120 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:13:36,129 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:13:36,130 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:13:36,131 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:13:36,131 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:13:36,132 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:13:36,133 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:13:36,134 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:13:36,135 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:13:36,136 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:13:36,138 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:13:36,140 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:13:36,141 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:13:36,143 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:13:36,144 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:13:36,147 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:13:36,147 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:13:36,147 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:13:36,148 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:13:36,149 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:13:36,150 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:13:36,151 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:13:36,152 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:13:36,153 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:13:36,153 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:13:36,153 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:13:36,154 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:13:36,155 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:13:36,156 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:13:36,156 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 20:13:36,181 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:13:36,181 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:13:36,182 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:13:36,182 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:13:36,182 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:13:36,182 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:13:36,183 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:13:36,183 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:13:36,183 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:13:36,183 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:13:36,183 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:13:36,184 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:13:36,184 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:13:36,185 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:13:36,185 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:13:36,186 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:13:36,186 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:13:36,186 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:13:36,186 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:13:36,187 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:13:36,187 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:13:36,187 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:13:36,187 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:13:36,187 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:13:36,187 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:13:36,189 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:13:36,189 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:13:36,189 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:13:36,190 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:13:36,190 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:13:36,190 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:13:36,190 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:13:36,190 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:13:36,190 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:13:36,191 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:13:36,240 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:13:36,255 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:13:36,258 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:13:36,260 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:13:36,260 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:13:36,261 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label52_true-unreach-call.c [2018-11-07 20:13:36,315 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1540af54/b44359cecf014568b5e045db2bf2a5e0/FLAG9ded469ce [2018-11-07 20:13:36,995 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:13:36,998 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label52_true-unreach-call.c [2018-11-07 20:13:37,017 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1540af54/b44359cecf014568b5e045db2bf2a5e0/FLAG9ded469ce [2018-11-07 20:13:37,038 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1540af54/b44359cecf014568b5e045db2bf2a5e0 [2018-11-07 20:13:37,050 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:13:37,052 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:13:37,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:13:37,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:13:37,057 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:13:37,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:13:37" (1/1) ... [2018-11-07 20:13:37,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73955608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:37, skipping insertion in model container [2018-11-07 20:13:37,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:13:37" (1/1) ... [2018-11-07 20:13:37,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:13:37,160 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:13:37,945 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:13:37,950 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:13:38,133 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:13:38,153 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:13:38,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:38 WrapperNode [2018-11-07 20:13:38,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:13:38,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:13:38,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:13:38,155 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:13:38,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:38" (1/1) ... [2018-11-07 20:13:38,301 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:38" (1/1) ... [2018-11-07 20:13:38,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:13:38,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:13:38,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:13:38,312 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:13:38,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:38" (1/1) ... [2018-11-07 20:13:38,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:38" (1/1) ... [2018-11-07 20:13:38,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:38" (1/1) ... [2018-11-07 20:13:38,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:38" (1/1) ... [2018-11-07 20:13:38,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:38" (1/1) ... [2018-11-07 20:13:38,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:38" (1/1) ... [2018-11-07 20:13:38,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:38" (1/1) ... [2018-11-07 20:13:38,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:13:38,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:13:38,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:13:38,456 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:13:38,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:38" (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 20:13:38,548 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:13:38,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:13:38,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:13:38,549 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:13:38,549 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:13:38,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:13:38,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:13:38,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:13:38,550 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:13:43,848 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:13:43,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:13:43 BoogieIcfgContainer [2018-11-07 20:13:43,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:13:43,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:13:43,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:13:43,853 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:13:43,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:13:37" (1/3) ... [2018-11-07 20:13:43,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f8b087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:13:43, skipping insertion in model container [2018-11-07 20:13:43,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:13:38" (2/3) ... [2018-11-07 20:13:43,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f8b087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:13:43, skipping insertion in model container [2018-11-07 20:13:43,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:13:43" (3/3) ... [2018-11-07 20:13:43,857 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label52_true-unreach-call.c [2018-11-07 20:13:43,867 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:13:43,877 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:13:43,894 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:13:43,933 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:13:43,934 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:13:43,934 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:13:43,934 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:13:43,934 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:13:43,934 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:13:43,935 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:13:43,935 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:13:43,964 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 20:13:43,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-11-07 20:13:43,974 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:13:43,976 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:13:43,978 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:13:43,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:13:43,985 INFO L82 PathProgramCache]: Analyzing trace with hash -684847423, now seen corresponding path program 1 times [2018-11-07 20:13:43,988 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:13:44,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:13:44,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:13:44,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:13:44,048 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:13:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:13:44,545 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:13:44,583 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 20:13:44,585 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:13:44,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:13:44,586 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:13:44,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:13:44,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:13:44,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:13:44,610 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-11-07 20:13:46,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:13:46,976 INFO L93 Difference]: Finished difference Result 790 states and 1382 transitions. [2018-11-07 20:13:46,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:13:46,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2018-11-07 20:13:46,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:13:47,004 INFO L225 Difference]: With dead ends: 790 [2018-11-07 20:13:47,004 INFO L226 Difference]: Without dead ends: 495 [2018-11-07 20:13:47,012 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 20:13:47,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2018-11-07 20:13:47,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 488. [2018-11-07 20:13:47,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2018-11-07 20:13:47,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 849 transitions. [2018-11-07 20:13:47,098 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 849 transitions. Word has length 59 [2018-11-07 20:13:47,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:13:47,099 INFO L480 AbstractCegarLoop]: Abstraction has 488 states and 849 transitions. [2018-11-07 20:13:47,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:13:47,099 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 849 transitions. [2018-11-07 20:13:47,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-11-07 20:13:47,115 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:13:47,115 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:13:47,116 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:13:47,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:13:47,116 INFO L82 PathProgramCache]: Analyzing trace with hash 788418208, now seen corresponding path program 1 times [2018-11-07 20:13:47,116 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:13:47,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:13:47,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:13:47,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:13:47,120 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:13:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:13:47,442 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:13:47,442 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:13:47,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 20:13:47,442 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:13:47,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 20:13:47,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 20:13:47,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 20:13:47,445 INFO L87 Difference]: Start difference. First operand 488 states and 849 transitions. Second operand 5 states. [2018-11-07 20:13:53,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:13:53,013 INFO L93 Difference]: Finished difference Result 1731 states and 3162 transitions. [2018-11-07 20:13:53,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 20:13:53,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2018-11-07 20:13:53,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:13:53,025 INFO L225 Difference]: With dead ends: 1731 [2018-11-07 20:13:53,026 INFO L226 Difference]: Without dead ends: 1249 [2018-11-07 20:13:53,031 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:13:53,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2018-11-07 20:13:53,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1032. [2018-11-07 20:13:53,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2018-11-07 20:13:53,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1658 transitions. [2018-11-07 20:13:53,122 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1658 transitions. Word has length 135 [2018-11-07 20:13:53,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:13:53,123 INFO L480 AbstractCegarLoop]: Abstraction has 1032 states and 1658 transitions. [2018-11-07 20:13:53,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 20:13:53,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1658 transitions. [2018-11-07 20:13:53,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-07 20:13:53,132 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:13:53,134 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:13:53,135 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:13:53,135 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:13:53,135 INFO L82 PathProgramCache]: Analyzing trace with hash 167245263, now seen corresponding path program 1 times [2018-11-07 20:13:53,135 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:13:53,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:13:53,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:13:53,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:13:53,142 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:13:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:13:53,502 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:13:53,502 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:13:53,502 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 20:13:53,502 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:13:53,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 20:13:53,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 20:13:53,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 20:13:53,505 INFO L87 Difference]: Start difference. First operand 1032 states and 1658 transitions. Second operand 5 states. [2018-11-07 20:13:57,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:13:57,394 INFO L93 Difference]: Finished difference Result 3664 states and 6086 transitions. [2018-11-07 20:13:57,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 20:13:57,399 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2018-11-07 20:13:57,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:13:57,419 INFO L225 Difference]: With dead ends: 3664 [2018-11-07 20:13:57,420 INFO L226 Difference]: Without dead ends: 2638 [2018-11-07 20:13:57,427 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:13:57,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2018-11-07 20:13:57,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 2605. [2018-11-07 20:13:57,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2605 states. [2018-11-07 20:13:57,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 3729 transitions. [2018-11-07 20:13:57,507 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 3729 transitions. Word has length 146 [2018-11-07 20:13:57,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:13:57,508 INFO L480 AbstractCegarLoop]: Abstraction has 2605 states and 3729 transitions. [2018-11-07 20:13:57,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 20:13:57,508 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 3729 transitions. [2018-11-07 20:13:57,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-11-07 20:13:57,514 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:13:57,514 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:13:57,514 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:13:57,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:13:57,515 INFO L82 PathProgramCache]: Analyzing trace with hash 2059396069, now seen corresponding path program 1 times [2018-11-07 20:13:57,515 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:13:57,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:13:57,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:13:57,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:13:57,517 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:13:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:13:57,919 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:13:57,920 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:13:57,920 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:13:57,921 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 192 with the following transitions: [2018-11-07 20:13:57,923 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [373], [375], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 20:13:57,995 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:13:57,996 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:13:58,794 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:14:00,137 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:14:00,139 INFO L272 AbstractInterpreter]: Visited 140 different actions 406 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 20:14:00,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:14:00,182 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:14:00,182 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:14:00,183 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 20:14:00,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:14:00,199 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:14:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:14:00,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:14:00,550 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:14:00,551 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:14:01,072 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:14:01,106 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:14:01,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-11-07 20:14:01,106 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:14:01,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:14:01,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:14:01,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:14:01,111 INFO L87 Difference]: Start difference. First operand 2605 states and 3729 transitions. Second operand 3 states. [2018-11-07 20:14:04,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:14:04,781 INFO L93 Difference]: Finished difference Result 6000 states and 8830 transitions. [2018-11-07 20:14:04,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:14:04,783 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2018-11-07 20:14:04,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:14:04,805 INFO L225 Difference]: With dead ends: 6000 [2018-11-07 20:14:04,805 INFO L226 Difference]: Without dead ends: 3401 [2018-11-07 20:14:04,817 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 382 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:14:04,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3401 states. [2018-11-07 20:14:04,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3401 to 3205. [2018-11-07 20:14:04,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3205 states. [2018-11-07 20:14:04,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3205 states to 3205 states and 4557 transitions. [2018-11-07 20:14:04,914 INFO L78 Accepts]: Start accepts. Automaton has 3205 states and 4557 transitions. Word has length 191 [2018-11-07 20:14:04,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:14:04,915 INFO L480 AbstractCegarLoop]: Abstraction has 3205 states and 4557 transitions. [2018-11-07 20:14:04,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:14:04,915 INFO L276 IsEmpty]: Start isEmpty. Operand 3205 states and 4557 transitions. [2018-11-07 20:14:04,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-11-07 20:14:04,923 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:14:04,924 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:14:04,924 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:14:04,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:14:04,925 INFO L82 PathProgramCache]: Analyzing trace with hash -558733758, now seen corresponding path program 1 times [2018-11-07 20:14:04,925 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:14:04,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:14:04,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:14:04,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:14:04,928 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:14:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:14:05,235 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:14:05,642 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 104 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:14:05,642 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:14:05,642 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:14:05,643 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 217 with the following transitions: [2018-11-07 20:14:05,643 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [373], [375], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 20:14:05,647 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:14:05,648 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:14:05,781 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:14:05,782 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 20:14:05,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:14:05,820 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:14:06,345 INFO L227 lantSequenceWeakener]: Weakened 207 states. On average, predicates are now at 73.69% of their original sizes. [2018-11-07 20:14:06,345 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:14:06,704 INFO L415 sIntCurrentIteration]: We unified 215 AI predicates to 215 [2018-11-07 20:14:06,705 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:14:06,705 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:14:06,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 20:14:06,706 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:14:06,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 20:14:06,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 20:14:06,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 20:14:06,707 INFO L87 Difference]: Start difference. First operand 3205 states and 4557 transitions. Second operand 7 states. [2018-11-07 20:14:09,481 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:14:21,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:14:21,628 INFO L93 Difference]: Finished difference Result 6596 states and 9328 transitions. [2018-11-07 20:14:21,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:14:21,629 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2018-11-07 20:14:21,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:14:21,648 INFO L225 Difference]: With dead ends: 6596 [2018-11-07 20:14:21,648 INFO L226 Difference]: Without dead ends: 3397 [2018-11-07 20:14:21,657 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 216 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:14:21,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3397 states. [2018-11-07 20:14:21,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3397 to 3395. [2018-11-07 20:14:21,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3395 states. [2018-11-07 20:14:21,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3395 states to 3395 states and 4756 transitions. [2018-11-07 20:14:21,741 INFO L78 Accepts]: Start accepts. Automaton has 3395 states and 4756 transitions. Word has length 216 [2018-11-07 20:14:21,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:14:21,742 INFO L480 AbstractCegarLoop]: Abstraction has 3395 states and 4756 transitions. [2018-11-07 20:14:21,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 20:14:21,742 INFO L276 IsEmpty]: Start isEmpty. Operand 3395 states and 4756 transitions. [2018-11-07 20:14:21,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-11-07 20:14:21,750 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:14:21,750 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:14:21,751 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:14:21,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:14:21,751 INFO L82 PathProgramCache]: Analyzing trace with hash -2137655114, now seen corresponding path program 1 times [2018-11-07 20:14:21,752 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:14:21,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:14:21,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:14:21,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:14:21,757 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:14:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:14:22,473 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-07 20:14:22,798 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-11-07 20:14:23,361 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 156 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:14:23,361 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:14:23,361 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:14:23,362 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 297 with the following transitions: [2018-11-07 20:14:23,362 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [373], [375], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [641], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 20:14:23,367 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:14:23,367 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:14:23,481 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:14:24,395 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:14:24,396 INFO L272 AbstractInterpreter]: Visited 141 different actions 554 times. Merged at 7 different actions 24 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 20:14:24,405 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:14:24,405 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:14:24,406 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:14:24,406 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:14:24,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:14:24,422 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:14:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:14:24,536 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:14:25,059 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-11-07 20:14:25,060 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:14:25,735 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 109 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:14:25,770 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:14:25,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7, 8] total 26 [2018-11-07 20:14:25,771 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:14:25,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 20:14:25,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 20:14:25,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2018-11-07 20:14:25,774 INFO L87 Difference]: Start difference. First operand 3395 states and 4756 transitions. Second operand 21 states. [2018-11-07 20:14:29,357 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2018-11-07 20:14:32,317 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2018-11-07 20:14:33,253 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-11-07 20:14:43,726 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2018-11-07 20:14:45,011 WARN L179 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2018-11-07 20:14:47,438 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2018-11-07 20:14:49,424 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2018-11-07 20:14:50,685 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2018-11-07 20:14:51,755 WARN L179 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2018-11-07 20:14:52,289 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2018-11-07 20:14:57,132 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2018-11-07 20:14:58,514 WARN L179 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-11-07 20:15:03,987 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2018-11-07 20:15:06,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:15:06,322 INFO L93 Difference]: Finished difference Result 18795 states and 31922 transitions. [2018-11-07 20:15:06,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-11-07 20:15:06,323 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 296 [2018-11-07 20:15:06,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:15:06,457 INFO L225 Difference]: With dead ends: 18795 [2018-11-07 20:15:06,457 INFO L226 Difference]: Without dead ends: 15037 [2018-11-07 20:15:06,555 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 773 GetRequests, 608 SyntacticMatches, 4 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10234 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=3766, Invalid=22640, Unknown=0, NotChecked=0, Total=26406 [2018-11-07 20:15:06,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15037 states. [2018-11-07 20:15:07,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15037 to 11602. [2018-11-07 20:15:07,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11602 states. [2018-11-07 20:15:07,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11602 states to 11602 states and 15428 transitions. [2018-11-07 20:15:07,055 INFO L78 Accepts]: Start accepts. Automaton has 11602 states and 15428 transitions. Word has length 296 [2018-11-07 20:15:07,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:15:07,056 INFO L480 AbstractCegarLoop]: Abstraction has 11602 states and 15428 transitions. [2018-11-07 20:15:07,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-07 20:15:07,056 INFO L276 IsEmpty]: Start isEmpty. Operand 11602 states and 15428 transitions. [2018-11-07 20:15:07,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-11-07 20:15:07,089 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:15:07,089 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:15:07,090 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:15:07,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:15:07,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1470194130, now seen corresponding path program 1 times [2018-11-07 20:15:07,090 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:15:07,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:15:07,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:15:07,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:15:07,092 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:15:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:15:08,192 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 5 proven. 106 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2018-11-07 20:15:08,193 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:15:08,193 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:15:08,193 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 375 with the following transitions: [2018-11-07 20:15:08,194 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [373], [375], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [869], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [959], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 20:15:08,199 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:15:08,200 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:15:08,386 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:15:09,914 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:15:09,914 INFO L272 AbstractInterpreter]: Visited 176 different actions 865 times. Merged at 7 different actions 32 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 20:15:09,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:15:09,922 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:15:09,922 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:15:09,922 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:15:09,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:15:09,933 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:15:10,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:15:10,045 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:15:11,726 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((v_~a29~0_528 Int)) (let ((.cse0 (+ v_~a29~0_528 69157))) (and (<= |c_old(~a29~0)| v_~a29~0_528) (<= c_~a29~0 (+ (mod .cse0 299861) 300138)) (<= 0 .cse0)))) (exists ((v_prenex_1 Int)) (let ((.cse2 (+ v_prenex_1 69157))) (let ((.cse1 (mod .cse2 299861))) (and (<= c_~a29~0 (+ .cse1 277)) (< .cse2 0) (<= |c_old(~a29~0)| v_prenex_1) (not (= 0 .cse1)))))) (exists ((v_prenex_2 Int)) (let ((.cse3 (mod (+ v_prenex_2 69157) 299861))) (and (= 0 .cse3) (<= |c_old(~a29~0)| v_prenex_2) (<= c_~a29~0 (+ .cse3 300138)))))) is different from true [2018-11-07 20:15:11,971 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 5 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2018-11-07 20:15:11,972 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:15:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 250 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:15:12,359 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:15:12,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 15 [2018-11-07 20:15:12,359 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:15:12,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 20:15:12,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 20:15:12,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=135, Unknown=1, NotChecked=24, Total=210 [2018-11-07 20:15:12,361 INFO L87 Difference]: Start difference. First operand 11602 states and 15428 transitions. Second operand 12 states. [2018-11-07 20:15:22,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:15:22,965 INFO L93 Difference]: Finished difference Result 36934 states and 55874 transitions. [2018-11-07 20:15:22,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 20:15:22,965 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 374 [2018-11-07 20:15:22,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:15:23,086 INFO L225 Difference]: With dead ends: 36934 [2018-11-07 20:15:23,086 INFO L226 Difference]: Without dead ends: 25719 [2018-11-07 20:15:23,137 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 742 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=268, Invalid=725, Unknown=3, NotChecked=60, Total=1056 [2018-11-07 20:15:23,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25719 states. [2018-11-07 20:15:23,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25719 to 25078. [2018-11-07 20:15:23,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25078 states. [2018-11-07 20:15:23,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25078 states to 25078 states and 34949 transitions. [2018-11-07 20:15:23,955 INFO L78 Accepts]: Start accepts. Automaton has 25078 states and 34949 transitions. Word has length 374 [2018-11-07 20:15:23,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:15:23,957 INFO L480 AbstractCegarLoop]: Abstraction has 25078 states and 34949 transitions. [2018-11-07 20:15:23,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-07 20:15:23,958 INFO L276 IsEmpty]: Start isEmpty. Operand 25078 states and 34949 transitions. [2018-11-07 20:15:24,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2018-11-07 20:15:24,074 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:15:24,074 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:24,075 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:15:24,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:15:24,075 INFO L82 PathProgramCache]: Analyzing trace with hash -31951988, now seen corresponding path program 1 times [2018-11-07 20:15:24,075 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:15:24,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:15:24,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:15:24,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:15:24,076 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:15:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:15:25,197 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 20:15:25,894 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 388 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:15:25,895 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:15:25,895 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:15:25,895 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 456 with the following transitions: [2018-11-07 20:15:25,895 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [373], [375], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [629], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [959], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 20:15:25,899 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:15:25,899 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:15:26,066 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:15:27,116 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:15:27,116 INFO L272 AbstractInterpreter]: Visited 177 different actions 877 times. Merged at 8 different actions 38 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 20:15:27,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:15:27,127 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:15:27,127 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:15:27,127 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:15:27,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:15:27,148 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:15:27,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:15:27,282 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:15:28,584 WARN L179 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2018-11-07 20:15:29,047 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-07 20:15:30,169 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 386 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-11-07 20:15:30,170 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:15:30,386 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2018-11-07 20:15:31,331 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 386 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-11-07 20:15:31,352 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:15:31,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7, 8] total 25 [2018-11-07 20:15:31,353 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:15:31,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 20:15:31,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 20:15:31,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2018-11-07 20:15:31,355 INFO L87 Difference]: Start difference. First operand 25078 states and 34949 transitions. Second operand 20 states. [2018-11-07 20:15:32,936 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2018-11-07 20:15:35,402 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2018-11-07 20:15:46,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:15:46,526 INFO L93 Difference]: Finished difference Result 58011 states and 95893 transitions. [2018-11-07 20:15:46,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-11-07 20:15:46,526 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 455 [2018-11-07 20:15:46,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:15:46,734 INFO L225 Difference]: With dead ends: 58011 [2018-11-07 20:15:46,735 INFO L226 Difference]: Without dead ends: 33128 [2018-11-07 20:15:46,865 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1001 GetRequests, 907 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2764 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=1806, Invalid=6936, Unknown=0, NotChecked=0, Total=8742 [2018-11-07 20:15:46,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33128 states. [2018-11-07 20:15:47,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33128 to 31895. [2018-11-07 20:15:47,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31895 states. [2018-11-07 20:15:47,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31895 states to 31895 states and 42090 transitions. [2018-11-07 20:15:47,950 INFO L78 Accepts]: Start accepts. Automaton has 31895 states and 42090 transitions. Word has length 455 [2018-11-07 20:15:47,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:15:47,951 INFO L480 AbstractCegarLoop]: Abstraction has 31895 states and 42090 transitions. [2018-11-07 20:15:47,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 20:15:47,951 INFO L276 IsEmpty]: Start isEmpty. Operand 31895 states and 42090 transitions. [2018-11-07 20:15:48,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2018-11-07 20:15:48,050 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:15:48,050 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:48,051 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:15:48,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:15:48,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1740502087, now seen corresponding path program 1 times [2018-11-07 20:15:48,051 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:15:48,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:15:48,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:15:48,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:15:48,052 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:15:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:15:48,656 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 345 proven. 50 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-07 20:15:48,657 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:15:48,657 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:15:48,657 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 463 with the following transitions: [2018-11-07 20:15:48,657 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [373], [375], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [711], [715], [718], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [959], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 20:15:48,661 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:15:48,661 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:15:48,809 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:15:49,845 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:15:49,846 INFO L272 AbstractInterpreter]: Visited 177 different actions 701 times. Merged at 8 different actions 29 times. Never widened. Found 6 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 20:15:49,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:15:49,853 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:15:49,853 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:15:49,853 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:15:49,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:15:49,862 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:15:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:15:49,990 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:15:50,307 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 345 proven. 50 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-07 20:15:50,307 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:15:50,855 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 393 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-07 20:15:50,876 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:15:50,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2018-11-07 20:15:50,876 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:15:50,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 20:15:50,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 20:15:50,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:15:50,878 INFO L87 Difference]: Start difference. First operand 31895 states and 42090 transitions. Second operand 8 states. [2018-11-07 20:15:54,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:15:54,713 INFO L93 Difference]: Finished difference Result 74601 states and 99673 transitions. [2018-11-07 20:15:54,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 20:15:54,714 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 462 [2018-11-07 20:15:54,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:15:54,864 INFO L225 Difference]: With dead ends: 74601 [2018-11-07 20:15:54,865 INFO L226 Difference]: Without dead ends: 46263 [2018-11-07 20:15:54,952 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 945 GetRequests, 927 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2018-11-07 20:15:54,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46263 states. [2018-11-07 20:15:56,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46263 to 46164. [2018-11-07 20:15:56,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46164 states. [2018-11-07 20:15:56,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46164 states to 46164 states and 61460 transitions. [2018-11-07 20:15:56,445 INFO L78 Accepts]: Start accepts. Automaton has 46164 states and 61460 transitions. Word has length 462 [2018-11-07 20:15:56,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:15:56,446 INFO L480 AbstractCegarLoop]: Abstraction has 46164 states and 61460 transitions. [2018-11-07 20:15:56,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 20:15:56,447 INFO L276 IsEmpty]: Start isEmpty. Operand 46164 states and 61460 transitions. [2018-11-07 20:15:56,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2018-11-07 20:15:56,555 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:15:56,556 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:56,556 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:15:56,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:15:56,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1221459068, now seen corresponding path program 1 times [2018-11-07 20:15:56,556 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:15:56,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:15:56,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:15:56,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:15:56,558 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:15:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:15:57,270 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 20:15:57,629 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-07 20:15:57,913 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-07 20:15:58,289 WARN L179 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-07 20:15:59,232 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 275 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:15:59,233 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:15:59,233 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:15:59,233 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 464 with the following transitions: [2018-11-07 20:15:59,234 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [373], [375], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [661], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [959], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 20:15:59,238 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:15:59,238 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:15:59,306 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:15:59,749 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:15:59,749 INFO L272 AbstractInterpreter]: Visited 176 different actions 515 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 20:15:59,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:15:59,760 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:16:00,491 INFO L227 lantSequenceWeakener]: Weakened 312 states. On average, predicates are now at 73.52% of their original sizes. [2018-11-07 20:16:00,492 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:16:01,466 INFO L415 sIntCurrentIteration]: We unified 462 AI predicates to 462 [2018-11-07 20:16:01,467 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:16:01,467 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:16:01,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [20] total 38 [2018-11-07 20:16:01,468 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:16:01,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 20:16:01,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 20:16:01,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2018-11-07 20:16:01,469 INFO L87 Difference]: Start difference. First operand 46164 states and 61460 transitions. Second operand 20 states. [2018-11-07 20:16:19,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:16:19,667 INFO L93 Difference]: Finished difference Result 92911 states and 123755 transitions. [2018-11-07 20:16:19,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 20:16:19,668 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 463 [2018-11-07 20:16:19,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:16:20,620 INFO L225 Difference]: With dead ends: 92911 [2018-11-07 20:16:20,620 INFO L226 Difference]: Without dead ends: 47135 [2018-11-07 20:16:20,706 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 475 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2018-11-07 20:16:20,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47135 states. [2018-11-07 20:16:21,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47135 to 47127. [2018-11-07 20:16:21,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47127 states. [2018-11-07 20:16:21,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47127 states to 47127 states and 62575 transitions. [2018-11-07 20:16:21,656 INFO L78 Accepts]: Start accepts. Automaton has 47127 states and 62575 transitions. Word has length 463 [2018-11-07 20:16:21,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:16:21,656 INFO L480 AbstractCegarLoop]: Abstraction has 47127 states and 62575 transitions. [2018-11-07 20:16:21,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 20:16:21,657 INFO L276 IsEmpty]: Start isEmpty. Operand 47127 states and 62575 transitions. [2018-11-07 20:16:21,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2018-11-07 20:16:21,749 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:16:21,750 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 20:16:21,750 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:16:21,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:16:21,750 INFO L82 PathProgramCache]: Analyzing trace with hash 299046479, now seen corresponding path program 1 times [2018-11-07 20:16:21,751 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:16:21,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:16:21,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:16:21,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:16:21,752 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:16:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:16:22,330 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 20:16:23,672 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 310 proven. 207 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 20:16:23,673 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:16:23,673 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:16:23,673 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 485 with the following transitions: [2018-11-07 20:16:23,673 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [373], [375], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [661], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [869], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [959], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 20:16:23,676 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:16:23,676 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:16:23,776 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:16:25,604 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:16:25,604 INFO L272 AbstractInterpreter]: Visited 177 different actions 1044 times. Merged at 8 different actions 40 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 20:16:25,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:16:25,613 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:16:25,613 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:16:25,613 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:16:25,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:16:25,622 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:16:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:16:25,762 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:16:26,073 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 469 proven. 2 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-11-07 20:16:26,073 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:16:27,491 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 162 proven. 357 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:16:27,511 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:16:27,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 8, 8] total 29 [2018-11-07 20:16:27,512 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:16:27,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-07 20:16:27,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-07 20:16:27,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2018-11-07 20:16:27,514 INFO L87 Difference]: Start difference. First operand 47127 states and 62575 transitions. Second operand 24 states. [2018-11-07 20:16:28,965 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2018-11-07 20:16:31,501 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2018-11-07 20:16:32,071 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2018-11-07 20:16:32,570 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2018-11-07 20:16:32,796 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2018-11-07 20:16:35,016 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2018-11-07 20:16:35,315 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2018-11-07 20:16:35,607 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2018-11-07 20:16:35,996 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2018-11-07 20:16:36,189 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2018-11-07 20:16:37,209 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2018-11-07 20:16:42,194 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2018-11-07 20:16:43,870 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2018-11-07 20:16:44,281 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2018-11-07 20:16:46,279 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2018-11-07 20:16:46,805 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2018-11-07 20:16:47,146 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2018-11-07 20:16:47,526 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2018-11-07 20:16:49,123 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2018-11-07 20:16:49,729 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-11-07 20:16:51,499 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2018-11-07 20:16:51,846 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2018-11-07 20:16:52,088 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2018-11-07 20:16:52,999 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 33 [2018-11-07 20:16:55,132 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2018-11-07 20:16:56,556 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2018-11-07 20:16:57,185 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 Received shutdown request... [2018-11-07 20:17:06,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-11-07 20:17:06,792 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:17:06,799 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:17:06,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:17:06 BoogieIcfgContainer [2018-11-07 20:17:06,799 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:17:06,800 INFO L168 Benchmark]: Toolchain (without parser) took 209749.45 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -976.0 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-07 20:17:06,801 INFO L168 Benchmark]: CDTParser took 0.15 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 20:17:06,802 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1101.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2018-11-07 20:17:06,803 INFO L168 Benchmark]: Boogie Procedure Inliner took 156.73 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 726.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -824.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2018-11-07 20:17:06,803 INFO L168 Benchmark]: Boogie Preprocessor took 142.94 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 20:17:06,804 INFO L168 Benchmark]: RCFGBuilder took 5393.27 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: 171.5 MB). Peak memory consumption was 171.5 MB. Max. memory is 7.1 GB. [2018-11-07 20:17:06,804 INFO L168 Benchmark]: TraceAbstraction took 202949.92 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -378.5 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-07 20:17:06,809 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 1101.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 156.73 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 726.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -824.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.94 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 5393.27 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: 171.5 MB). Peak memory consumption was 171.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202949.92 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -378.5 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 162]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 162). Cancelled while BasicCegarLoop was constructing difference of abstraction (47127states) and FLOYD_HOARE automaton (currently 163 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (118316 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 202.8s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 160.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2352 SDtfs, 43305 SDslu, 5208 SDs, 0 SdLazy, 55718 SolverSat, 20353 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 81.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 5764 GetRequests, 5202 SyntacticMatches, 21 SemanticMatches, 541 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 26874 ImplicationChecksByTransitivity, 43.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47127occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.1s AbstIntTime, 8 AbstIntIterations, 2 AbstIntStrong, 0.9980488328346526 AbsIntWeakeningRatio, 0.0915805022156573 AbsIntAvgWeakeningVarsNumRemoved, 22.945347119645493 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 5.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 5871 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 19.5s InterpolantComputationTime, 5543 NumberOfCodeBlocks, 5543 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 7782 ConstructedInterpolants, 2 QuantifiedInterpolants, 26845970 SizeOfPredicates, 19 NumberOfNonLiveVariables, 3591 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 23 InterpolantComputations, 5 PerfectInterpolantSequences, 5300/6883 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown