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/Problem17_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:36:58,131 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:36:58,133 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:36:58,149 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:36:58,150 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:36:58,151 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:36:58,154 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:36:58,156 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:36:58,158 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:36:58,159 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:36:58,160 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:36:58,160 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:36:58,161 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:36:58,162 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:36:58,163 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:36:58,164 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:36:58,164 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:36:58,166 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:36:58,168 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:36:58,170 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:36:58,171 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:36:58,175 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:36:58,180 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:36:58,180 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:36:58,180 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:36:58,181 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:36:58,185 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:36:58,186 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:36:58,187 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:36:58,191 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:36:58,191 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:36:58,192 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:36:58,192 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:36:58,192 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:36:58,194 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:36:58,195 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:36:58,196 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 [2018-11-12 19:36:58,225 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:36:58,227 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:36:58,228 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:36:58,228 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:36:58,229 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:36:58,229 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:36:58,229 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:36:58,229 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:36:58,229 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:36:58,230 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:36:58,230 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:36:58,230 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:36:58,230 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:36:58,231 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:36:58,232 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:36:58,232 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:36:58,232 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:36:58,232 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:36:58,232 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:36:58,233 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:36:58,234 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:36:58,235 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:36:58,235 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:36:58,235 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:36:58,235 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:36:58,236 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:36:58,236 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:36:58,236 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:36:58,236 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:36:58,236 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:36:58,237 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:36:58,237 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:36:58,237 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:36:58,237 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:36:58,237 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:36:58,303 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:36:58,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:36:58,321 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:36:58,323 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:36:58,324 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:36:58,325 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label59_true-unreach-call.c [2018-11-12 19:36:58,384 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/038578061/4e01efc4470247e0a71f744561790eb7/FLAG261aaed77 [2018-11-12 19:36:59,059 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:36:59,060 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label59_true-unreach-call.c [2018-11-12 19:36:59,081 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/038578061/4e01efc4470247e0a71f744561790eb7/FLAG261aaed77 [2018-11-12 19:36:59,097 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/038578061/4e01efc4470247e0a71f744561790eb7 [2018-11-12 19:36:59,109 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:36:59,110 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:36:59,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:36:59,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:36:59,116 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:36:59,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:36:59" (1/1) ... [2018-11-12 19:36:59,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c8ae49a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:36:59, skipping insertion in model container [2018-11-12 19:36:59,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:36:59" (1/1) ... [2018-11-12 19:36:59,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:36:59,238 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:37:00,223 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:37:00,228 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:37:00,674 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:37:00,699 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:37:00,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:00 WrapperNode [2018-11-12 19:37:00,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:37:00,701 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:37:00,701 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:37:00,701 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:37:00,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:00" (1/1) ... [2018-11-12 19:37:00,951 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:00" (1/1) ... [2018-11-12 19:37:00,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:37:00,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:37:00,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:37:00,968 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:37:00,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:00" (1/1) ... [2018-11-12 19:37:00,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:00" (1/1) ... [2018-11-12 19:37:00,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:00" (1/1) ... [2018-11-12 19:37:00,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:00" (1/1) ... [2018-11-12 19:37:01,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:00" (1/1) ... [2018-11-12 19:37:01,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:00" (1/1) ... [2018-11-12 19:37:01,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:00" (1/1) ... [2018-11-12 19:37:01,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:37:01,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:37:01,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:37:01,219 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:37:01,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:00" (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 [2018-11-12 19:37:01,290 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:37:01,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:37:01,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:37:01,291 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:37:01,292 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:37:01,292 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:37:01,292 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:37:01,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:37:01,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:37:01,293 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:37:01,293 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:37:09,660 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:37:09,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:37:09 BoogieIcfgContainer [2018-11-12 19:37:09,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:37:09,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:37:09,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:37:09,666 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:37:09,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:36:59" (1/3) ... [2018-11-12 19:37:09,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2681ec61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:37:09, skipping insertion in model container [2018-11-12 19:37:09,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:00" (2/3) ... [2018-11-12 19:37:09,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2681ec61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:37:09, skipping insertion in model container [2018-11-12 19:37:09,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:37:09" (3/3) ... [2018-11-12 19:37:09,670 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label59_true-unreach-call.c [2018-11-12 19:37:09,681 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:37:09,692 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:37:09,709 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:37:09,754 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:37:09,754 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:37:09,754 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:37:09,754 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:37:09,755 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:37:09,755 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:37:09,755 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:37:09,755 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:37:09,798 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-12 19:37:09,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-12 19:37:09,807 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:37:09,808 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] [2018-11-12 19:37:09,811 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:37:09,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:37:09,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1188687990, now seen corresponding path program 1 times [2018-11-12 19:37:09,818 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:37:09,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:37:09,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:37:09,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:37:09,869 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:37:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:37:10,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:37:10,294 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:37:10,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:37:10,294 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:37:10,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:37:10,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:37:10,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:37:10,320 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-12 19:37:22,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:37:22,390 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-11-12 19:37:22,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:37:22,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-11-12 19:37:22,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:37:22,429 INFO L225 Difference]: With dead ends: 2164 [2018-11-12 19:37:22,429 INFO L226 Difference]: Without dead ends: 1554 [2018-11-12 19:37:22,443 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:37:22,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-11-12 19:37:22,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1051. [2018-11-12 19:37:22,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1051 states. [2018-11-12 19:37:22,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1880 transitions. [2018-11-12 19:37:22,616 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1880 transitions. Word has length 39 [2018-11-12 19:37:22,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:37:22,617 INFO L480 AbstractCegarLoop]: Abstraction has 1051 states and 1880 transitions. [2018-11-12 19:37:22,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:37:22,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1880 transitions. [2018-11-12 19:37:22,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-11-12 19:37:22,629 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:37:22,629 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:37:22,630 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:37:22,630 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:37:22,630 INFO L82 PathProgramCache]: Analyzing trace with hash 2141434535, now seen corresponding path program 1 times [2018-11-12 19:37:22,630 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:37:22,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:37:22,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:37:22,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:37:22,633 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:37:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:37:22,956 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:37:22,956 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:37:22,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 19:37:22,957 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:37:22,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 19:37:22,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 19:37:22,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 19:37:22,959 INFO L87 Difference]: Start difference. First operand 1051 states and 1880 transitions. Second operand 5 states. [2018-11-12 19:37:30,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:37:30,992 INFO L93 Difference]: Finished difference Result 3028 states and 5532 transitions. [2018-11-12 19:37:30,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:37:30,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2018-11-12 19:37:30,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:37:31,011 INFO L225 Difference]: With dead ends: 3028 [2018-11-12 19:37:31,011 INFO L226 Difference]: Without dead ends: 1983 [2018-11-12 19:37:31,016 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:37:31,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2018-11-12 19:37:31,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1957. [2018-11-12 19:37:31,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2018-11-12 19:37:31,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3236 transitions. [2018-11-12 19:37:31,087 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3236 transitions. Word has length 111 [2018-11-12 19:37:31,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:37:31,087 INFO L480 AbstractCegarLoop]: Abstraction has 1957 states and 3236 transitions. [2018-11-12 19:37:31,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 19:37:31,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3236 transitions. [2018-11-12 19:37:31,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-12 19:37:31,092 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:37:31,092 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:37:31,093 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:37:31,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:37:31,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1471325761, now seen corresponding path program 1 times [2018-11-12 19:37:31,093 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:37:31,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:37:31,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:37:31,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:37:31,095 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:37:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:37:31,451 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:37:31,451 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:37:31,451 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:37:31,452 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 115 with the following transitions: [2018-11-12 19:37:31,455 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:37:31,517 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:37:31,518 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:37:31,935 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:37:32,664 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:37:32,666 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Performed 3900 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3900 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 19:37:32,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:37:32,712 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:37:32,712 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:37:32,712 INFO L192 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 [2018-11-12 19:37:32,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:37:32,733 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:37:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:37:32,828 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:37:35,571 WARN L179 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 42 [2018-11-12 19:37:35,731 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:37:35,732 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:37:36,819 WARN L179 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2018-11-12 19:37:37,171 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:37:37,205 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-12 19:37:37,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-11-12 19:37:37,205 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:37:37,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:37:37,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:37:37,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-11-12 19:37:37,207 INFO L87 Difference]: Start difference. First operand 1957 states and 3236 transitions. Second operand 6 states. [2018-11-12 19:37:52,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:37:52,711 INFO L93 Difference]: Finished difference Result 7517 states and 12901 transitions. [2018-11-12 19:37:52,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-12 19:37:52,712 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2018-11-12 19:37:52,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:37:52,750 INFO L225 Difference]: With dead ends: 7517 [2018-11-12 19:37:52,751 INFO L226 Difference]: Without dead ends: 5566 [2018-11-12 19:37:52,766 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 223 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-11-12 19:37:52,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5566 states. [2018-11-12 19:37:52,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5566 to 5556. [2018-11-12 19:37:52,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5556 states. [2018-11-12 19:37:52,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5556 states to 5556 states and 9351 transitions. [2018-11-12 19:37:52,963 INFO L78 Accepts]: Start accepts. Automaton has 5556 states and 9351 transitions. Word has length 114 [2018-11-12 19:37:52,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:37:52,967 INFO L480 AbstractCegarLoop]: Abstraction has 5556 states and 9351 transitions. [2018-11-12 19:37:52,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:37:52,968 INFO L276 IsEmpty]: Start isEmpty. Operand 5556 states and 9351 transitions. [2018-11-12 19:37:52,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-11-12 19:37:52,976 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:37:52,976 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:37:52,977 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:37:52,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:37:52,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1996985273, now seen corresponding path program 1 times [2018-11-12 19:37:52,977 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:37:52,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:37:52,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:37:52,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:37:52,983 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:37:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:37:53,326 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:37:53,327 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:37:53,327 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:37:53,327 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 128 with the following transitions: [2018-11-12 19:37:53,328 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:37:53,333 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:37:53,333 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:37:53,445 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:37:54,009 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:37:54,010 INFO L272 AbstractInterpreter]: Visited 96 different actions 274 times. Merged at 5 different actions 9 times. Never widened. Performed 4193 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4193 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 19:37:54,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:37:54,050 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:37:54,051 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:37:54,051 INFO L192 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 [2018-11-12 19:37:54,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:37:54,067 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:37:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:37:54,128 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:37:54,296 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:37:54,296 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:37:54,617 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:37:54,648 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:37:54,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-11-12 19:37:54,648 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:37:54,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:37:54,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:37:54,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:37:54,651 INFO L87 Difference]: Start difference. First operand 5556 states and 9351 transitions. Second operand 3 states. [2018-11-12 19:37:58,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:37:58,192 INFO L93 Difference]: Finished difference Result 13728 states and 22981 transitions. [2018-11-12 19:37:58,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:37:58,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2018-11-12 19:37:58,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:37:58,233 INFO L225 Difference]: With dead ends: 13728 [2018-11-12 19:37:58,233 INFO L226 Difference]: Without dead ends: 8178 [2018-11-12 19:37:58,268 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 253 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:37:58,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8178 states. [2018-11-12 19:37:58,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8178 to 8177. [2018-11-12 19:37:58,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8177 states. [2018-11-12 19:37:58,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8177 states to 8177 states and 12781 transitions. [2018-11-12 19:37:58,502 INFO L78 Accepts]: Start accepts. Automaton has 8177 states and 12781 transitions. Word has length 127 [2018-11-12 19:37:58,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:37:58,503 INFO L480 AbstractCegarLoop]: Abstraction has 8177 states and 12781 transitions. [2018-11-12 19:37:58,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:37:58,503 INFO L276 IsEmpty]: Start isEmpty. Operand 8177 states and 12781 transitions. [2018-11-12 19:37:58,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-11-12 19:37:58,512 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:37:58,512 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:37:58,512 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:37:58,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:37:58,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1686408890, now seen corresponding path program 1 times [2018-11-12 19:37:58,516 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:37:58,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:37:58,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:37:58,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:37:58,518 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:37:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:37:58,846 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:37:59,306 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 65 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 19:37:59,307 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:37:59,307 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:37:59,307 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 213 with the following transitions: [2018-11-12 19:37:59,307 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1329], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:37:59,316 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:37:59,316 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:37:59,387 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:37:59,959 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:37:59,959 INFO L272 AbstractInterpreter]: Visited 107 different actions 307 times. Merged at 5 different actions 9 times. Never widened. Performed 5325 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5325 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 19:37:59,994 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:37:59,995 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:37:59,995 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:37:59,995 INFO L192 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 [2018-11-12 19:38:00,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:38:00,016 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:38:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:38:00,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:38:00,548 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:38:00,548 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:38:01,507 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:38:01,542 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:38:01,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-12 19:38:01,543 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:38:01,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 19:38:01,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 19:38:01,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-12 19:38:01,546 INFO L87 Difference]: Start difference. First operand 8177 states and 12781 transitions. Second operand 9 states. [2018-11-12 19:38:08,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:38:08,057 INFO L93 Difference]: Finished difference Result 16007 states and 25184 transitions. [2018-11-12 19:38:08,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-12 19:38:08,057 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 212 [2018-11-12 19:38:08,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:38:08,087 INFO L225 Difference]: With dead ends: 16007 [2018-11-12 19:38:08,087 INFO L226 Difference]: Without dead ends: 6866 [2018-11-12 19:38:08,116 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 422 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-11-12 19:38:08,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6866 states. [2018-11-12 19:38:08,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6866 to 6833. [2018-11-12 19:38:08,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6833 states. [2018-11-12 19:38:08,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6833 states to 6833 states and 8198 transitions. [2018-11-12 19:38:08,262 INFO L78 Accepts]: Start accepts. Automaton has 6833 states and 8198 transitions. Word has length 212 [2018-11-12 19:38:08,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:38:08,263 INFO L480 AbstractCegarLoop]: Abstraction has 6833 states and 8198 transitions. [2018-11-12 19:38:08,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-12 19:38:08,263 INFO L276 IsEmpty]: Start isEmpty. Operand 6833 states and 8198 transitions. [2018-11-12 19:38:08,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-11-12 19:38:08,269 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:38:08,270 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:38:08,270 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:38:08,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:38:08,270 INFO L82 PathProgramCache]: Analyzing trace with hash 133092229, now seen corresponding path program 1 times [2018-11-12 19:38:08,271 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:38:08,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:08,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:38:08,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:08,272 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:38:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:38:08,673 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-12 19:38:08,673 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:38:08,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:38:08,674 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:38:08,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:38:08,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:38:08,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:38:08,675 INFO L87 Difference]: Start difference. First operand 6833 states and 8198 transitions. Second operand 4 states. [2018-11-12 19:38:15,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:38:15,276 INFO L93 Difference]: Finished difference Result 25107 states and 30891 transitions. [2018-11-12 19:38:15,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:38:15,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 293 [2018-11-12 19:38:15,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:38:15,333 INFO L225 Difference]: With dead ends: 25107 [2018-11-12 19:38:15,333 INFO L226 Difference]: Without dead ends: 14704 [2018-11-12 19:38:15,356 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:38:15,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14704 states. [2018-11-12 19:38:15,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14704 to 14265. [2018-11-12 19:38:15,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14265 states. [2018-11-12 19:38:15,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14265 states to 14265 states and 16830 transitions. [2018-11-12 19:38:15,650 INFO L78 Accepts]: Start accepts. Automaton has 14265 states and 16830 transitions. Word has length 293 [2018-11-12 19:38:15,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:38:15,651 INFO L480 AbstractCegarLoop]: Abstraction has 14265 states and 16830 transitions. [2018-11-12 19:38:15,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:38:15,651 INFO L276 IsEmpty]: Start isEmpty. Operand 14265 states and 16830 transitions. [2018-11-12 19:38:15,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-11-12 19:38:15,666 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:38:15,667 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:38:15,667 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:38:15,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:38:15,668 INFO L82 PathProgramCache]: Analyzing trace with hash 197834602, now seen corresponding path program 1 times [2018-11-12 19:38:15,668 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:38:15,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:15,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:38:15,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:15,669 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:38:15,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:38:16,386 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:38:16,387 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:38:16,387 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:38:16,387 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 388 with the following transitions: [2018-11-12 19:38:16,388 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [204], [208], [212], [216], [227], [231], [235], [239], [250], [254], [258], [262], [266], [270], [273], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:38:16,399 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:38:16,399 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:38:19,871 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:38:19,872 INFO L272 AbstractInterpreter]: Visited 356 different actions 2105 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Performed 36169 root evaluator evaluations with a maximum evaluation depth of 6. Performed 36169 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 19:38:19,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:38:19,881 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:38:19,881 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:38:19,881 INFO L192 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 [2018-11-12 19:38:19,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:38:19,890 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:38:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:38:20,004 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:38:20,253 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:38:20,253 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:38:20,745 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:38:20,766 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-12 19:38:20,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-11-12 19:38:20,766 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:38:20,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:38:20,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:38:20,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-11-12 19:38:20,771 INFO L87 Difference]: Start difference. First operand 14265 states and 16830 transitions. Second operand 6 states. [2018-11-12 19:38:27,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:38:27,704 INFO L93 Difference]: Finished difference Result 30283 states and 35712 transitions. [2018-11-12 19:38:27,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-12 19:38:27,705 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 387 [2018-11-12 19:38:27,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:38:27,752 INFO L225 Difference]: With dead ends: 30283 [2018-11-12 19:38:27,752 INFO L226 Difference]: Without dead ends: 15590 [2018-11-12 19:38:27,771 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 773 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-11-12 19:38:27,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15590 states. [2018-11-12 19:38:28,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15590 to 15148. [2018-11-12 19:38:28,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15148 states. [2018-11-12 19:38:28,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15148 states to 15148 states and 17875 transitions. [2018-11-12 19:38:28,061 INFO L78 Accepts]: Start accepts. Automaton has 15148 states and 17875 transitions. Word has length 387 [2018-11-12 19:38:28,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:38:28,063 INFO L480 AbstractCegarLoop]: Abstraction has 15148 states and 17875 transitions. [2018-11-12 19:38:28,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:38:28,063 INFO L276 IsEmpty]: Start isEmpty. Operand 15148 states and 17875 transitions. [2018-11-12 19:38:28,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2018-11-12 19:38:28,092 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:38:28,093 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:38:28,093 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:38:28,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:38:28,094 INFO L82 PathProgramCache]: Analyzing trace with hash -361053273, now seen corresponding path program 1 times [2018-11-12 19:38:28,094 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:38:28,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:28,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:38:28,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:28,096 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:38:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:38:28,658 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2018-11-12 19:38:28,659 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:38:28,659 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:38:28,659 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 576 with the following transitions: [2018-11-12 19:38:28,660 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1239], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1670], [1673], [1677], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1861], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:38:28,668 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:38:28,669 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:38:28,778 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:38:30,778 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:38:30,779 INFO L272 AbstractInterpreter]: Visited 215 different actions 850 times. Merged at 7 different actions 25 times. Never widened. Performed 19006 root evaluator evaluations with a maximum evaluation depth of 6. Performed 19006 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-12 19:38:30,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:38:30,814 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:38:30,814 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:38:30,814 INFO L192 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 [2018-11-12 19:38:30,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:38:30,828 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:38:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:38:30,995 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:38:31,211 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 430 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-11-12 19:38:31,211 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:38:31,515 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2018-11-12 19:38:31,536 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-12 19:38:31,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-11-12 19:38:31,537 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:38:31,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:38:31,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:38:31,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:38:31,539 INFO L87 Difference]: Start difference. First operand 15148 states and 17875 transitions. Second operand 3 states. [2018-11-12 19:38:36,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:38:36,134 INFO L93 Difference]: Finished difference Result 41251 states and 49492 transitions. [2018-11-12 19:38:36,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:38:36,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 575 [2018-11-12 19:38:36,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:38:36,216 INFO L225 Difference]: With dead ends: 41251 [2018-11-12 19:38:36,216 INFO L226 Difference]: Without dead ends: 26109 [2018-11-12 19:38:36,240 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1152 GetRequests, 1150 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:38:36,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26109 states. [2018-11-12 19:38:36,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26109 to 26091. [2018-11-12 19:38:36,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26091 states. [2018-11-12 19:38:37,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26091 states to 26091 states and 30860 transitions. [2018-11-12 19:38:37,006 INFO L78 Accepts]: Start accepts. Automaton has 26091 states and 30860 transitions. Word has length 575 [2018-11-12 19:38:37,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:38:37,007 INFO L480 AbstractCegarLoop]: Abstraction has 26091 states and 30860 transitions. [2018-11-12 19:38:37,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:38:37,007 INFO L276 IsEmpty]: Start isEmpty. Operand 26091 states and 30860 transitions. [2018-11-12 19:38:37,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2018-11-12 19:38:37,061 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:38:37,061 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:38:37,061 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:38:37,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:38:37,062 INFO L82 PathProgramCache]: Analyzing trace with hash 905567621, now seen corresponding path program 1 times [2018-11-12 19:38:37,062 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:38:37,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:37,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:38:37,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:37,063 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:38:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:38:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 342 proven. 114 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2018-11-12 19:38:38,124 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:38:38,124 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:38:38,124 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 654 with the following transitions: [2018-11-12 19:38:38,125 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1404], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1810], [1815], [1817], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1917], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:38:38,130 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:38:38,130 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:38:38,187 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:38:42,178 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:38:42,179 INFO L272 AbstractInterpreter]: Visited 230 different actions 2063 times. Merged at 9 different actions 88 times. Widened at 1 different actions 4 times. Performed 40792 root evaluator evaluations with a maximum evaluation depth of 6. Performed 40792 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 21 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-12 19:38:42,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:38:42,184 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:38:42,184 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:38:42,184 INFO L192 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 [2018-11-12 19:38:42,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:38:42,194 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:38:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:38:42,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:38:42,587 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 694 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-11-12 19:38:42,587 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:38:43,007 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 342 proven. 114 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2018-11-12 19:38:43,027 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:38:43,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-11-12 19:38:43,027 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:38:43,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 19:38:43,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 19:38:43,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:38:43,029 INFO L87 Difference]: Start difference. First operand 26091 states and 30860 transitions. Second operand 7 states. [2018-11-12 19:38:47,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:38:47,760 INFO L93 Difference]: Finished difference Result 59616 states and 73353 transitions. [2018-11-12 19:38:47,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-12 19:38:47,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 653 [2018-11-12 19:38:47,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:38:47,866 INFO L225 Difference]: With dead ends: 59616 [2018-11-12 19:38:47,867 INFO L226 Difference]: Without dead ends: 33965 [2018-11-12 19:38:47,907 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1321 GetRequests, 1307 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-11-12 19:38:47,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33965 states. [2018-11-12 19:38:48,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33965 to 33324. [2018-11-12 19:38:48,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33324 states. [2018-11-12 19:38:48,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33324 states to 33324 states and 39879 transitions. [2018-11-12 19:38:48,550 INFO L78 Accepts]: Start accepts. Automaton has 33324 states and 39879 transitions. Word has length 653 [2018-11-12 19:38:48,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:38:48,551 INFO L480 AbstractCegarLoop]: Abstraction has 33324 states and 39879 transitions. [2018-11-12 19:38:48,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 19:38:48,551 INFO L276 IsEmpty]: Start isEmpty. Operand 33324 states and 39879 transitions. [2018-11-12 19:38:48,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2018-11-12 19:38:48,615 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:38:48,616 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:38:48,616 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:38:48,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:38:48,617 INFO L82 PathProgramCache]: Analyzing trace with hash -176426799, now seen corresponding path program 1 times [2018-11-12 19:38:48,617 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:38:48,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:48,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:38:48,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:48,618 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:38:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:38:49,418 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2018-11-12 19:38:49,419 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:38:49,419 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:38:49,419 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 721 with the following transitions: [2018-11-12 19:38:49,420 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [204], [208], [212], [216], [227], [231], [235], [239], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [297], [301], [305], [309], [313], [317], [321], [325], [336], [340], [344], [348], [352], [363], [367], [371], [375], [379], [383], [387], [391], [395], [399], [403], [407], [411], [415], [426], [430], [434], [445], [449], [453], [464], [475], [479], [483], [487], [491], [495], [499], [503], [507], [511], [515], [519], [530], [534], [538], [549], [553], [557], [561], [565], [569], [573], [584], [587], [590], [594], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1266], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1329], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:38:49,429 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:38:49,429 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:38:49,530 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:38:52,489 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:38:52,490 INFO L272 AbstractInterpreter]: Visited 418 different actions 1661 times. Merged at 7 different actions 24 times. Never widened. Performed 37803 root evaluator evaluations with a maximum evaluation depth of 6. Performed 37803 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-12 19:38:52,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:38:52,497 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:38:52,497 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:38:52,497 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:38:52,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:38:52,511 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:38:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:38:52,720 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:38:53,037 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 535 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-11-12 19:38:53,037 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:38:53,575 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 150 proven. 8 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2018-11-12 19:38:53,596 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-12 19:38:53,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2018-11-12 19:38:53,597 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:38:53,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:38:53,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:38:53,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:38:53,599 INFO L87 Difference]: Start difference. First operand 33324 states and 39879 transitions. Second operand 3 states. [2018-11-12 19:38:54,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:38:54,976 INFO L93 Difference]: Finished difference Result 62231 states and 74527 transitions. [2018-11-12 19:38:54,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:38:54,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 720 [2018-11-12 19:38:54,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:38:55,049 INFO L225 Difference]: With dead ends: 62231 [2018-11-12 19:38:55,049 INFO L226 Difference]: Without dead ends: 29346 [2018-11-12 19:38:55,093 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1443 GetRequests, 1435 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:38:55,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29346 states. [2018-11-12 19:38:55,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29346 to 29343. [2018-11-12 19:38:55,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29343 states. [2018-11-12 19:38:55,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29343 states to 29343 states and 34960 transitions. [2018-11-12 19:38:55,596 INFO L78 Accepts]: Start accepts. Automaton has 29343 states and 34960 transitions. Word has length 720 [2018-11-12 19:38:55,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:38:55,597 INFO L480 AbstractCegarLoop]: Abstraction has 29343 states and 34960 transitions. [2018-11-12 19:38:55,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:38:55,597 INFO L276 IsEmpty]: Start isEmpty. Operand 29343 states and 34960 transitions. [2018-11-12 19:38:55,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2018-11-12 19:38:55,636 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:38:55,637 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:38:55,638 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:38:55,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:38:55,638 INFO L82 PathProgramCache]: Analyzing trace with hash 2080661305, now seen corresponding path program 1 times [2018-11-12 19:38:55,638 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:38:55,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:55,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:38:55,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:55,640 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:38:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:38:56,792 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 143 proven. 326 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-11-12 19:38:56,792 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:38:56,793 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:38:56,793 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 729 with the following transitions: [2018-11-12 19:38:56,793 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [95], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1266], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1861], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:38:56,799 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:38:56,799 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:38:56,848 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:39:00,044 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:39:00,045 INFO L272 AbstractInterpreter]: Visited 325 different actions 2272 times. Merged at 9 different actions 67 times. Widened at 1 different actions 3 times. Performed 44622 root evaluator evaluations with a maximum evaluation depth of 6. Performed 44622 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 16 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-12 19:39:00,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:39:00,053 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:39:00,053 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:39:00,053 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:39:00,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:39:00,063 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:39:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:39:00,271 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:39:00,567 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2018-11-12 19:39:00,842 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 411 proven. 2 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2018-11-12 19:39:00,842 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:39:02,318 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 143 proven. 403 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2018-11-12 19:39:02,339 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:39:02,340 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 14 [2018-11-12 19:39:02,340 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:39:02,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 19:39:02,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 19:39:02,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-11-12 19:39:02,342 INFO L87 Difference]: Start difference. First operand 29343 states and 34960 transitions. Second operand 9 states. [2018-11-12 19:39:18,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:39:18,095 INFO L93 Difference]: Finished difference Result 71463 states and 85758 transitions. [2018-11-12 19:39:18,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 19:39:18,096 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 728 [2018-11-12 19:39:18,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:39:18,187 INFO L225 Difference]: With dead ends: 71463 [2018-11-12 19:39:18,188 INFO L226 Difference]: Without dead ends: 42560 [2018-11-12 19:39:18,228 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1485 GetRequests, 1460 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=182, Invalid=418, Unknown=0, NotChecked=0, Total=600 [2018-11-12 19:39:18,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42560 states. [2018-11-12 19:39:18,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42560 to 39447. [2018-11-12 19:39:18,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39447 states. [2018-11-12 19:39:18,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39447 states to 39447 states and 46716 transitions. [2018-11-12 19:39:18,852 INFO L78 Accepts]: Start accepts. Automaton has 39447 states and 46716 transitions. Word has length 728 [2018-11-12 19:39:18,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:39:18,853 INFO L480 AbstractCegarLoop]: Abstraction has 39447 states and 46716 transitions. [2018-11-12 19:39:18,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-12 19:39:18,853 INFO L276 IsEmpty]: Start isEmpty. Operand 39447 states and 46716 transitions. [2018-11-12 19:39:18,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2018-11-12 19:39:18,902 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:39:18,903 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:39:18,903 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:39:18,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:39:18,904 INFO L82 PathProgramCache]: Analyzing trace with hash 175578229, now seen corresponding path program 1 times [2018-11-12 19:39:18,904 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:39:18,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:39:18,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:39:18,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:39:18,905 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:39:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:39:20,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 182 proven. 615 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2018-11-12 19:39:20,506 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:39:20,507 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:39:20,507 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 839 with the following transitions: [2018-11-12 19:39:20,507 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [95], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1266], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1861], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:39:20,513 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:39:20,513 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:39:20,613 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:39:24,758 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:39:24,758 INFO L272 AbstractInterpreter]: Visited 326 different actions 2945 times. Merged at 10 different actions 103 times. Widened at 1 different actions 5 times. Performed 64335 root evaluator evaluations with a maximum evaluation depth of 6. Performed 64335 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 27 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-12 19:39:24,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:39:24,782 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:39:24,782 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:39:24,782 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:39:24,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:39:24,796 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:39:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:39:25,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:39:25,632 WARN L179 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 21 [2018-11-12 19:39:26,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 711 proven. 2 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2018-11-12 19:39:26,390 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:39:27,034 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 19:39:27,167 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 18 [2018-11-12 19:39:28,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 176 proven. 621 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2018-11-12 19:39:28,894 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:39:28,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 20 [2018-11-12 19:39:28,895 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:39:28,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-12 19:39:28,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-12 19:39:28,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2018-11-12 19:39:28,898 INFO L87 Difference]: Start difference. First operand 39447 states and 46716 transitions. Second operand 15 states. [2018-11-12 19:39:46,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:39:46,899 INFO L93 Difference]: Finished difference Result 88649 states and 111642 transitions. [2018-11-12 19:39:46,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-11-12 19:39:46,900 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 838 [2018-11-12 19:39:46,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:39:47,048 INFO L225 Difference]: With dead ends: 88649 [2018-11-12 19:39:47,048 INFO L226 Difference]: Without dead ends: 49644 [2018-11-12 19:39:47,098 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1762 GetRequests, 1700 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1033 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=757, Invalid=2903, Unknown=0, NotChecked=0, Total=3660 [2018-11-12 19:39:47,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49644 states. [2018-11-12 19:39:47,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49644 to 48659. [2018-11-12 19:39:47,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48659 states. [2018-11-12 19:39:48,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48659 states to 48659 states and 57530 transitions. [2018-11-12 19:39:48,045 INFO L78 Accepts]: Start accepts. Automaton has 48659 states and 57530 transitions. Word has length 838 [2018-11-12 19:39:48,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:39:48,046 INFO L480 AbstractCegarLoop]: Abstraction has 48659 states and 57530 transitions. [2018-11-12 19:39:48,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-12 19:39:48,046 INFO L276 IsEmpty]: Start isEmpty. Operand 48659 states and 57530 transitions. [2018-11-12 19:39:48,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 859 [2018-11-12 19:39:48,101 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:39:48,102 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:39:48,102 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:39:48,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:39:48,103 INFO L82 PathProgramCache]: Analyzing trace with hash -215889203, now seen corresponding path program 1 times [2018-11-12 19:39:48,103 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:39:48,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:39:48,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:39:48,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:39:48,104 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:39:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:39:48,785 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:39:50,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 178 proven. 659 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2018-11-12 19:39:50,502 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:39:50,502 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:39:50,502 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 859 with the following transitions: [2018-11-12 19:39:50,503 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [95], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1266], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1478], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1861], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:39:50,508 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:39:50,508 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:39:50,563 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:39:53,349 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:39:53,350 INFO L272 AbstractInterpreter]: Visited 326 different actions 2292 times. Merged at 10 different actions 80 times. Widened at 1 different actions 3 times. Performed 44885 root evaluator evaluations with a maximum evaluation depth of 6. Performed 44885 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 22 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-12 19:39:53,364 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:39:53,364 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:39:53,364 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:39:53,364 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:39:53,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:39:53,374 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:39:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:39:53,609 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:39:54,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 672 proven. 2 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2018-11-12 19:39:54,097 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:39:54,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 672 proven. 2 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2018-11-12 19:39:54,925 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:39:54,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-12 19:39:54,925 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:39:54,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 19:39:54,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 19:39:54,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2018-11-12 19:39:54,927 INFO L87 Difference]: Start difference. First operand 48659 states and 57530 transitions. Second operand 17 states. [2018-11-12 19:39:57,907 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2018-11-12 19:39:58,287 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2018-11-12 19:39:59,286 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2018-11-12 19:40:00,926 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2018-11-12 19:40:04,404 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2018-11-12 19:40:09,597 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2018-11-12 19:40:10,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:40:10,984 INFO L93 Difference]: Finished difference Result 108916 states and 130887 transitions. [2018-11-12 19:40:10,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-11-12 19:40:10,985 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 858 [2018-11-12 19:40:10,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:40:11,114 INFO L225 Difference]: With dead ends: 108916 [2018-11-12 19:40:11,115 INFO L226 Difference]: Without dead ends: 61132 [2018-11-12 19:40:11,170 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1799 GetRequests, 1741 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 895 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=633, Invalid=2673, Unknown=0, NotChecked=0, Total=3306 [2018-11-12 19:40:11,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61132 states. [2018-11-12 19:40:12,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61132 to 59770. [2018-11-12 19:40:12,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59770 states. [2018-11-12 19:40:12,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59770 states to 59770 states and 71174 transitions. [2018-11-12 19:40:12,236 INFO L78 Accepts]: Start accepts. Automaton has 59770 states and 71174 transitions. Word has length 858 [2018-11-12 19:40:12,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:40:12,237 INFO L480 AbstractCegarLoop]: Abstraction has 59770 states and 71174 transitions. [2018-11-12 19:40:12,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 19:40:12,237 INFO L276 IsEmpty]: Start isEmpty. Operand 59770 states and 71174 transitions. [2018-11-12 19:40:12,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 930 [2018-11-12 19:40:12,299 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:40:12,299 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:40:12,300 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:40:12,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:40:12,300 INFO L82 PathProgramCache]: Analyzing trace with hash -645295429, now seen corresponding path program 1 times [2018-11-12 19:40:12,300 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:40:12,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:40:12,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:40:12,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:40:12,301 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:40:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:40:13,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 926 proven. 6 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked. [2018-11-12 19:40:13,382 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:40:13,382 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:40:13,383 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 930 with the following transitions: [2018-11-12 19:40:13,383 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [153], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1239], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1376], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1861], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:40:13,388 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:40:13,389 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:40:13,438 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:40:17,354 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:40:17,354 INFO L272 AbstractInterpreter]: Visited 338 different actions 3082 times. Merged at 11 different actions 132 times. Widened at 1 different actions 5 times. Performed 60973 root evaluator evaluations with a maximum evaluation depth of 6. Performed 60973 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 37 fixpoints after 4 different actions. Largest state had 26 variables. [2018-11-12 19:40:17,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:40:17,361 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:40:17,361 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:40:17,361 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:40:17,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:40:17,369 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:40:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:40:17,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:40:18,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 926 proven. 6 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked. [2018-11-12 19:40:18,788 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:40:19,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 926 proven. 202 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2018-11-12 19:40:19,694 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:40:19,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 15 [2018-11-12 19:40:19,694 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:40:19,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 19:40:19,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 19:40:19,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-11-12 19:40:19,696 INFO L87 Difference]: Start difference. First operand 59770 states and 71174 transitions. Second operand 9 states. [2018-11-12 19:40:27,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:40:27,800 INFO L93 Difference]: Finished difference Result 138524 states and 166015 transitions. [2018-11-12 19:40:27,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-12 19:40:27,800 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 929 [2018-11-12 19:40:27,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:40:27,974 INFO L225 Difference]: With dead ends: 138524 [2018-11-12 19:40:27,975 INFO L226 Difference]: Without dead ends: 81383 [2018-11-12 19:40:28,043 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1879 GetRequests, 1860 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2018-11-12 19:40:28,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81383 states. [2018-11-12 19:40:28,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81383 to 76544. [2018-11-12 19:40:28,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76544 states. [2018-11-12 19:40:29,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76544 states to 76544 states and 90408 transitions. [2018-11-12 19:40:29,105 INFO L78 Accepts]: Start accepts. Automaton has 76544 states and 90408 transitions. Word has length 929 [2018-11-12 19:40:29,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:40:29,106 INFO L480 AbstractCegarLoop]: Abstraction has 76544 states and 90408 transitions. [2018-11-12 19:40:29,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-12 19:40:29,106 INFO L276 IsEmpty]: Start isEmpty. Operand 76544 states and 90408 transitions. [2018-11-12 19:40:29,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 935 [2018-11-12 19:40:29,163 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:40:29,164 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:40:29,164 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:40:29,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:40:29,164 INFO L82 PathProgramCache]: Analyzing trace with hash -869866749, now seen corresponding path program 1 times [2018-11-12 19:40:29,164 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:40:29,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:40:29,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:40:29,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:40:29,166 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:40:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:40:29,800 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-12 19:40:31,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1643 backedges. 931 proven. 207 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2018-11-12 19:40:31,097 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:40:31,097 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:40:31,098 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 935 with the following transitions: [2018-11-12 19:40:31,098 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [153], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1266], [1267], [1271], [1275], [1278], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1376], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1861], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:40:31,104 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:40:31,104 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:40:31,150 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:40:35,096 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:40:35,097 INFO L272 AbstractInterpreter]: Visited 338 different actions 2732 times. Merged at 11 different actions 109 times. Widened at 1 different actions 4 times. Performed 55134 root evaluator evaluations with a maximum evaluation depth of 6. Performed 55134 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 33 fixpoints after 4 different actions. Largest state had 26 variables. [2018-11-12 19:40:35,110 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:40:35,110 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:40:35,110 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:40:35,110 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:40:35,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:40:35,119 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:40:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:40:35,391 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:40:35,658 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 13 [2018-11-12 19:40:36,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1643 backedges. 931 proven. 207 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2018-11-12 19:40:36,340 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-11-12 19:40:38,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1643 backedges. 931 proven. 207 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2018-11-12 19:40:38,817 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:40:38,818 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2018-11-12 19:40:38,818 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:40:38,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-12 19:40:38,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-12 19:40:38,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2018-11-12 19:40:38,820 INFO L87 Difference]: Start difference. First operand 76544 states and 90408 transitions. Second operand 12 states. [2018-11-12 19:40:38,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-12 19:40:38,822 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:40:38,828 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:40:38,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:40:38 BoogieIcfgContainer [2018-11-12 19:40:38,828 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:40:38,829 INFO L168 Benchmark]: Toolchain (without parser) took 219719.76 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 310.0 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-11-12 19:40:38,830 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-11-12 19:40:38,831 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1588.64 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-12 19:40:38,831 INFO L168 Benchmark]: Boogie Procedure Inliner took 267.06 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 784.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -964.9 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-11-12 19:40:38,833 INFO L168 Benchmark]: Boogie Preprocessor took 250.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-11-12 19:40:38,833 INFO L168 Benchmark]: RCFGBuilder took 8442.64 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 482.4 MB). Peak memory consumption was 482.4 MB. Max. memory is 7.1 GB. [2018-11-12 19:40:38,834 INFO L168 Benchmark]: TraceAbstraction took 209165.65 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.1 GB in the end (delta: 641.3 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-12 19:40:38,839 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1588.64 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 267.06 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 784.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -964.9 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 250.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8442.64 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 482.4 MB). Peak memory consumption was 482.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209165.65 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.1 GB in the end (delta: 641.3 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 104). Cancelled while BasicCegarLoop was constructing difference of abstraction (76544states) and FLOYD_HOARE automaton (currently 2 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 209.0s OverallTime, 15 OverallIterations, 7 TraceHistogramMax, 129.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3263 SDtfs, 32389 SDslu, 3687 SDs, 0 SdLazy, 49105 SolverSat, 9566 SolverUnsat, 220 SolverUnknown, 0 SolverNotchecked, 106.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14462 GetRequests, 14194 SyntacticMatches, 25 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2285 ImplicationChecksByTransitivity, 17.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76544occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 33.8s AbstIntTime, 12 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.9s AutomataMinimizationTime, 14 MinimizatonAttempts, 12415 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 29.9s InterpolantComputationTime, 14593 NumberOfCodeBlocks, 14593 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 21629 ConstructedInterpolants, 288 QuantifiedInterpolants, 50003826 SizeOfPredicates, 24 NumberOfNonLiveVariables, 10301 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 39 InterpolantComputations, 9 PerfectInterpolantSequences, 22842/26686 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown