java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label06_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:12:13,071 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:12:13,073 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:12:13,087 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:12:13,088 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:12:13,089 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:12:13,090 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:12:13,092 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:12:13,094 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:12:13,095 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:12:13,096 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:12:13,096 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:12:13,098 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:12:13,102 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:12:13,103 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:12:13,104 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:12:13,105 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:12:13,114 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:12:13,116 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:12:13,120 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:12:13,121 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:12:13,122 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:12:13,127 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:12:13,127 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:12:13,129 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:12:13,130 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:12:13,130 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:12:13,133 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:12:13,134 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:12:13,135 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:12:13,135 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:12:13,137 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:12:13,138 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:12:13,138 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:12:13,139 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:12:13,140 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:12:13,140 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 18:12:13,161 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:12:13,161 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:12:13,162 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:12:13,162 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:12:13,162 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:12:13,162 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:12:13,162 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:12:13,163 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:12:13,163 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:12:13,163 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:12:13,163 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:12:13,163 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:12:13,164 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:12:13,164 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:12:13,164 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:12:13,165 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:12:13,165 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:12:13,165 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:12:13,165 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:12:13,165 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:12:13,166 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:12:13,166 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:12:13,166 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:12:13,166 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:12:13,166 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:12:13,166 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:12:13,167 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:12:13,167 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:12:13,167 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:12:13,167 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:12:13,167 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:12:13,168 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:12:13,168 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:12:13,168 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:12:13,168 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:12:13,228 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:12:13,243 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:12:13,246 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:12:13,248 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:12:13,248 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:12:13,248 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label06_false-unreach-call.c [2018-11-07 18:12:13,307 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33b3943f0/b7cf98998493441c950413f2c8fd605e/FLAG01a4ccb97 [2018-11-07 18:12:13,934 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:12:13,934 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label06_false-unreach-call.c [2018-11-07 18:12:13,953 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33b3943f0/b7cf98998493441c950413f2c8fd605e/FLAG01a4ccb97 [2018-11-07 18:12:13,969 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33b3943f0/b7cf98998493441c950413f2c8fd605e [2018-11-07 18:12:13,981 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:12:13,982 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:12:13,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:12:13,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:12:13,988 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:12:13,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:12:13" (1/1) ... [2018-11-07 18:12:13,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5df28fad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:13, skipping insertion in model container [2018-11-07 18:12:13,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:12:13" (1/1) ... [2018-11-07 18:12:14,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:12:14,093 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:12:15,038 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:12:15,045 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:12:15,262 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:12:15,283 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:12:15,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:15 WrapperNode [2018-11-07 18:12:15,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:12:15,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:12:15,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:12:15,285 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:12:15,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:15" (1/1) ... [2018-11-07 18:12:15,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:15" (1/1) ... [2018-11-07 18:12:15,458 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:12:15,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:12:15,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:12:15,459 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:12:15,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:15" (1/1) ... [2018-11-07 18:12:15,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:15" (1/1) ... [2018-11-07 18:12:15,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:15" (1/1) ... [2018-11-07 18:12:15,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:15" (1/1) ... [2018-11-07 18:12:15,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:15" (1/1) ... [2018-11-07 18:12:15,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:15" (1/1) ... [2018-11-07 18:12:15,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:15" (1/1) ... [2018-11-07 18:12:15,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:12:15,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:12:15,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:12:15,593 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:12:15,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:12:15,668 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:12:15,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:12:15,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:12:15,669 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 18:12:15,669 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 18:12:15,669 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:12:15,669 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:12:15,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:12:15,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:12:15,670 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:12:15,670 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:12:21,445 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:12:21,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:12:21 BoogieIcfgContainer [2018-11-07 18:12:21,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:12:21,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:12:21,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:12:21,451 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:12:21,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:12:13" (1/3) ... [2018-11-07 18:12:21,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192f2773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:12:21, skipping insertion in model container [2018-11-07 18:12:21,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:15" (2/3) ... [2018-11-07 18:12:21,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192f2773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:12:21, skipping insertion in model container [2018-11-07 18:12:21,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:12:21" (3/3) ... [2018-11-07 18:12:21,455 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label06_false-unreach-call.c [2018-11-07 18:12:21,465 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:12:21,476 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:12:21,494 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:12:21,534 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:12:21,534 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:12:21,534 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:12:21,535 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:12:21,535 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:12:21,535 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:12:21,535 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:12:21,535 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:12:21,570 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 18:12:21,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-07 18:12:21,578 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:12:21,580 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:12:21,582 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:12:21,587 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:12:21,588 INFO L82 PathProgramCache]: Analyzing trace with hash 973214763, now seen corresponding path program 1 times [2018-11-07 18:12:21,590 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:12:21,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:12:21,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:12:21,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:12:21,639 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:12:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:12:22,020 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-11-07 18:12:22,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:12:22,028 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:12:22,028 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:12:22,028 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:12:22,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:12:22,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:12:22,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:12:22,056 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-11-07 18:12:27,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:12:27,730 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-11-07 18:12:27,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:12:27,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-11-07 18:12:27,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:12:27,762 INFO L225 Difference]: With dead ends: 1513 [2018-11-07 18:12:27,762 INFO L226 Difference]: Without dead ends: 1097 [2018-11-07 18:12:27,772 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 [2018-11-07 18:12:27,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-11-07 18:12:27,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1097. [2018-11-07 18:12:27,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1097 states. [2018-11-07 18:12:27,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1954 transitions. [2018-11-07 18:12:27,908 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1954 transitions. Word has length 17 [2018-11-07 18:12:27,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:12:27,909 INFO L480 AbstractCegarLoop]: Abstraction has 1097 states and 1954 transitions. [2018-11-07 18:12:27,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:12:27,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1954 transitions. [2018-11-07 18:12:27,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-11-07 18:12:27,919 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:12:27,919 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:12:27,919 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:12:27,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:12:27,920 INFO L82 PathProgramCache]: Analyzing trace with hash -804123419, now seen corresponding path program 1 times [2018-11-07 18:12:27,920 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:12:27,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:12:27,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:12:27,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:12:27,923 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:12:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:12:28,274 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:12:28,370 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:12:28,370 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:12:28,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:12:28,371 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:12:28,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:12:28,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:12:28,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:12:28,373 INFO L87 Difference]: Start difference. First operand 1097 states and 1954 transitions. Second operand 6 states. [2018-11-07 18:12:33,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:12:33,693 INFO L93 Difference]: Finished difference Result 3259 states and 5952 transitions. [2018-11-07 18:12:33,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:12:33,697 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2018-11-07 18:12:33,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:12:33,720 INFO L225 Difference]: With dead ends: 3259 [2018-11-07 18:12:33,721 INFO L226 Difference]: Without dead ends: 2168 [2018-11-07 18:12:33,727 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:12:33,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2018-11-07 18:12:33,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 2142. [2018-11-07 18:12:33,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2142 states. [2018-11-07 18:12:33,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 3739 transitions. [2018-11-07 18:12:33,838 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 3739 transitions. Word has length 88 [2018-11-07 18:12:33,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:12:33,838 INFO L480 AbstractCegarLoop]: Abstraction has 2142 states and 3739 transitions. [2018-11-07 18:12:33,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:12:33,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 3739 transitions. [2018-11-07 18:12:33,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-11-07 18:12:33,844 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:12:33,844 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:12:33,844 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:12:33,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:12:33,845 INFO L82 PathProgramCache]: Analyzing trace with hash -778915235, now seen corresponding path program 1 times [2018-11-07 18:12:33,845 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:12:33,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:12:33,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:12:33,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:12:33,847 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:12:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:12:34,136 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:12:34,136 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:12:34,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:12:34,137 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:12:34,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:12:34,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:12:34,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:12:34,138 INFO L87 Difference]: Start difference. First operand 2142 states and 3739 transitions. Second operand 6 states. [2018-11-07 18:12:38,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:12:38,654 INFO L93 Difference]: Finished difference Result 7047 states and 12676 transitions. [2018-11-07 18:12:38,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:12:38,657 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2018-11-07 18:12:38,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:12:38,695 INFO L225 Difference]: With dead ends: 7047 [2018-11-07 18:12:38,695 INFO L226 Difference]: Without dead ends: 4911 [2018-11-07 18:12:38,717 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:12:38,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4911 states. [2018-11-07 18:12:38,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4911 to 4871. [2018-11-07 18:12:38,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4871 states. [2018-11-07 18:12:38,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4871 states to 4871 states and 7884 transitions. [2018-11-07 18:12:38,883 INFO L78 Accepts]: Start accepts. Automaton has 4871 states and 7884 transitions. Word has length 116 [2018-11-07 18:12:38,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:12:38,884 INFO L480 AbstractCegarLoop]: Abstraction has 4871 states and 7884 transitions. [2018-11-07 18:12:38,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:12:38,885 INFO L276 IsEmpty]: Start isEmpty. Operand 4871 states and 7884 transitions. [2018-11-07 18:12:38,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-11-07 18:12:38,891 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:12:38,891 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:12:38,891 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:12:38,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:12:38,892 INFO L82 PathProgramCache]: Analyzing trace with hash 2071209528, now seen corresponding path program 1 times [2018-11-07 18:12:38,892 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:12:38,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:12:38,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:12:38,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:12:38,893 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:12:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:12:39,280 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:12:39,458 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:12:39,458 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:12:39,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:12:39,458 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:12:39,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:12:39,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:12:39,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:12:39,460 INFO L87 Difference]: Start difference. First operand 4871 states and 7884 transitions. Second operand 6 states. [2018-11-07 18:12:43,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:12:43,241 INFO L93 Difference]: Finished difference Result 12812 states and 21358 transitions. [2018-11-07 18:12:43,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:12:43,241 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2018-11-07 18:12:43,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:12:43,287 INFO L225 Difference]: With dead ends: 12812 [2018-11-07 18:12:43,287 INFO L226 Difference]: Without dead ends: 7947 [2018-11-07 18:12:43,321 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:12:43,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7947 states. [2018-11-07 18:12:43,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7947 to 7906. [2018-11-07 18:12:43,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7906 states. [2018-11-07 18:12:43,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7906 states to 7906 states and 12226 transitions. [2018-11-07 18:12:43,541 INFO L78 Accepts]: Start accepts. Automaton has 7906 states and 12226 transitions. Word has length 181 [2018-11-07 18:12:43,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:12:43,542 INFO L480 AbstractCegarLoop]: Abstraction has 7906 states and 12226 transitions. [2018-11-07 18:12:43,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:12:43,542 INFO L276 IsEmpty]: Start isEmpty. Operand 7906 states and 12226 transitions. [2018-11-07 18:12:43,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-11-07 18:12:43,548 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:12:43,553 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:12:43,553 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:12:43,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:12:43,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1111726163, now seen corresponding path program 1 times [2018-11-07 18:12:43,554 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:12:43,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:12:43,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:12:43,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:12:43,555 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:12:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:12:43,858 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:12:44,075 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 20 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:12:44,076 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:12:44,076 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:12:44,077 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 208 with the following transitions: [2018-11-07 18:12:44,079 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [215], [217], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [684], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [860], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:12:44,128 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:12:44,128 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:12:44,984 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:12:44,986 INFO L272 AbstractInterpreter]: Visited 122 different actions 122 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 18:12:45,024 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:12:45,025 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:12:45,751 INFO L227 lantSequenceWeakener]: Weakened 185 states. On average, predicates are now at 77.38% of their original sizes. [2018-11-07 18:12:45,751 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:12:47,438 INFO L415 sIntCurrentIteration]: We unified 206 AI predicates to 206 [2018-11-07 18:12:47,438 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:12:47,439 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:12:47,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 18:12:47,439 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:12:47,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 18:12:47,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 18:12:47,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 18:12:47,440 INFO L87 Difference]: Start difference. First operand 7906 states and 12226 transitions. Second operand 10 states. [2018-11-07 18:12:52,413 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:13:12,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:13:12,456 INFO L93 Difference]: Finished difference Result 16149 states and 24955 transitions. [2018-11-07 18:13:12,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 18:13:12,456 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 207 [2018-11-07 18:13:12,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:13:12,496 INFO L225 Difference]: With dead ends: 16149 [2018-11-07 18:13:12,496 INFO L226 Difference]: Without dead ends: 8249 [2018-11-07 18:13:12,525 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 210 GetRequests, 173 SyntacticMatches, 25 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-07 18:13:12,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8249 states. [2018-11-07 18:13:12,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8249 to 8244. [2018-11-07 18:13:12,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8244 states. [2018-11-07 18:13:12,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8244 states to 8244 states and 12573 transitions. [2018-11-07 18:13:12,736 INFO L78 Accepts]: Start accepts. Automaton has 8244 states and 12573 transitions. Word has length 207 [2018-11-07 18:13:12,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:13:12,736 INFO L480 AbstractCegarLoop]: Abstraction has 8244 states and 12573 transitions. [2018-11-07 18:13:12,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 18:13:12,736 INFO L276 IsEmpty]: Start isEmpty. Operand 8244 states and 12573 transitions. [2018-11-07 18:13:12,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-11-07 18:13:12,746 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:13:12,746 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 18:13:12,746 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:13:12,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:13:12,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1111781520, now seen corresponding path program 1 times [2018-11-07 18:13:12,747 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:13:12,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:12,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:13:12,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:12,748 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:13:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:13:13,097 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:13:13,426 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 36 proven. 158 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 18:13:13,426 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:13:13,426 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:13:13,427 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 300 with the following transitions: [2018-11-07 18:13:13,427 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [215], [217], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [684], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [860], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:13:13,433 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:13:13,433 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:13:13,490 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:13:13,770 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:13:13,770 INFO L272 AbstractInterpreter]: Visited 126 different actions 365 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:13:13,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:13:13,778 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:13:14,879 INFO L227 lantSequenceWeakener]: Weakened 79 states. On average, predicates are now at 77.7% of their original sizes. [2018-11-07 18:13:14,879 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:13:16,413 INFO L415 sIntCurrentIteration]: We unified 298 AI predicates to 298 [2018-11-07 18:13:16,414 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:13:16,414 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:13:16,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-07 18:13:16,415 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:13:16,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-07 18:13:16,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-07 18:13:16,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2018-11-07 18:13:16,416 INFO L87 Difference]: Start difference. First operand 8244 states and 12573 transitions. Second operand 23 states. [2018-11-07 18:14:11,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:14:11,485 INFO L93 Difference]: Finished difference Result 18216 states and 27825 transitions. [2018-11-07 18:14:11,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-07 18:14:11,485 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 299 [2018-11-07 18:14:11,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:14:11,533 INFO L225 Difference]: With dead ends: 18216 [2018-11-07 18:14:11,533 INFO L226 Difference]: Without dead ends: 10316 [2018-11-07 18:14:11,555 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 318 GetRequests, 262 SyntacticMatches, 15 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=325, Invalid=1481, Unknown=0, NotChecked=0, Total=1806 [2018-11-07 18:14:11,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10316 states. [2018-11-07 18:14:11,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10316 to 9850. [2018-11-07 18:14:11,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9850 states. [2018-11-07 18:14:11,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9850 states to 9850 states and 14300 transitions. [2018-11-07 18:14:11,780 INFO L78 Accepts]: Start accepts. Automaton has 9850 states and 14300 transitions. Word has length 299 [2018-11-07 18:14:11,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:14:11,780 INFO L480 AbstractCegarLoop]: Abstraction has 9850 states and 14300 transitions. [2018-11-07 18:14:11,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-07 18:14:11,781 INFO L276 IsEmpty]: Start isEmpty. Operand 9850 states and 14300 transitions. [2018-11-07 18:14:11,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-11-07 18:14:11,795 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:14:11,795 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 18:14:11,796 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:14:11,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:14:11,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1077522712, now seen corresponding path program 1 times [2018-11-07 18:14:11,796 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:14:11,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:14:11,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:14:11,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:14:11,798 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:14:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:14:12,104 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-07 18:14:12,598 WARN L179 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-07 18:14:13,165 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 150 proven. 72 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 18:14:13,166 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:14:13,166 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:14:13,166 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 336 with the following transitions: [2018-11-07 18:14:13,167 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [215], [217], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [684], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [860], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:14:13,171 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:14:13,171 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:14:13,272 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:14:13,490 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:14:13,491 INFO L272 AbstractInterpreter]: Visited 137 different actions 398 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:14:13,502 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:14:13,502 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:14:13,939 INFO L227 lantSequenceWeakener]: Weakened 79 states. On average, predicates are now at 77.7% of their original sizes. [2018-11-07 18:14:13,939 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:14:14,418 INFO L415 sIntCurrentIteration]: We unified 334 AI predicates to 334 [2018-11-07 18:14:14,418 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:14:14,418 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:14:14,418 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [13] total 34 [2018-11-07 18:14:14,418 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:14:14,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-07 18:14:14,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-07 18:14:14,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2018-11-07 18:14:14,420 INFO L87 Difference]: Start difference. First operand 9850 states and 14300 transitions. Second operand 23 states. [2018-11-07 18:14:48,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:14:48,614 INFO L93 Difference]: Finished difference Result 20079 states and 29692 transitions. [2018-11-07 18:14:48,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 18:14:48,614 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 335 [2018-11-07 18:14:48,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:14:48,648 INFO L225 Difference]: With dead ends: 20079 [2018-11-07 18:14:48,648 INFO L226 Difference]: Without dead ends: 11440 [2018-11-07 18:14:48,665 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 349 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=265, Invalid=1141, Unknown=0, NotChecked=0, Total=1406 [2018-11-07 18:14:48,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11440 states. [2018-11-07 18:14:48,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11440 to 11424. [2018-11-07 18:14:48,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11424 states. [2018-11-07 18:14:48,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11424 states to 11424 states and 15993 transitions. [2018-11-07 18:14:48,892 INFO L78 Accepts]: Start accepts. Automaton has 11424 states and 15993 transitions. Word has length 335 [2018-11-07 18:14:48,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:14:48,893 INFO L480 AbstractCegarLoop]: Abstraction has 11424 states and 15993 transitions. [2018-11-07 18:14:48,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-07 18:14:48,893 INFO L276 IsEmpty]: Start isEmpty. Operand 11424 states and 15993 transitions. [2018-11-07 18:14:48,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2018-11-07 18:14:48,912 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:14:48,912 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2018-11-07 18:14:48,913 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:14:48,913 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:14:48,913 INFO L82 PathProgramCache]: Analyzing trace with hash -275967172, now seen corresponding path program 1 times [2018-11-07 18:14:48,913 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:14:48,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:14:48,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:14:48,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:14:48,914 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:14:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:14:49,324 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-07 18:14:49,809 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 57 proven. 196 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-07 18:14:49,811 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:14:49,811 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:14:49,812 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 430 with the following transitions: [2018-11-07 18:14:49,812 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [215], [217], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [684], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [788], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:14:49,817 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:14:49,817 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:14:50,100 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:14:50,100 INFO L272 AbstractInterpreter]: Visited 249 different actions 492 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:14:50,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:14:50,107 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:14:50,499 INFO L227 lantSequenceWeakener]: Weakened 199 states. On average, predicates are now at 77.55% of their original sizes. [2018-11-07 18:14:50,499 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:14:52,050 INFO L415 sIntCurrentIteration]: We unified 428 AI predicates to 428 [2018-11-07 18:14:52,050 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:14:52,051 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:14:52,051 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [7] total 23 [2018-11-07 18:14:52,051 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:14:52,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 18:14:52,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 18:14:52,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-11-07 18:14:52,053 INFO L87 Difference]: Start difference. First operand 11424 states and 15993 transitions. Second operand 18 states. [2018-11-07 18:14:54,733 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:15:18,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:15:18,035 INFO L93 Difference]: Finished difference Result 21404 states and 30868 transitions. [2018-11-07 18:15:18,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 18:15:18,035 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 429 [2018-11-07 18:15:18,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:15:18,076 INFO L225 Difference]: With dead ends: 21404 [2018-11-07 18:15:18,076 INFO L226 Difference]: Without dead ends: 12060 [2018-11-07 18:15:18,094 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 444 GetRequests, 367 SyntacticMatches, 45 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2018-11-07 18:15:18,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12060 states. [2018-11-07 18:15:18,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12060 to 12055. [2018-11-07 18:15:18,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12055 states. [2018-11-07 18:15:18,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12055 states to 12055 states and 16666 transitions. [2018-11-07 18:15:18,323 INFO L78 Accepts]: Start accepts. Automaton has 12055 states and 16666 transitions. Word has length 429 [2018-11-07 18:15:18,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:15:18,324 INFO L480 AbstractCegarLoop]: Abstraction has 12055 states and 16666 transitions. [2018-11-07 18:15:18,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 18:15:18,324 INFO L276 IsEmpty]: Start isEmpty. Operand 12055 states and 16666 transitions. [2018-11-07 18:15:18,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2018-11-07 18:15:18,342 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:15:18,342 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 18:15:18,343 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:15:18,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:15:18,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1968700808, now seen corresponding path program 1 times [2018-11-07 18:15:18,343 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:15:18,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:18,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:15:18,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:18,344 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:15:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:15:18,719 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:15:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 36 proven. 183 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 18:15:19,281 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:15:19,281 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:15:19,281 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 456 with the following transitions: [2018-11-07 18:15:19,282 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [215], [217], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [684], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [860], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:15:19,286 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:15:19,287 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:15:22,196 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:15:22,196 INFO L272 AbstractInterpreter]: Visited 257 different actions 2516 times. Merged at 5 different actions 45 times. Widened at 1 different actions 5 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:15:22,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:15:22,211 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:15:22,807 INFO L227 lantSequenceWeakener]: Weakened 102 states. On average, predicates are now at 77.68% of their original sizes. [2018-11-07 18:15:22,807 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:15:23,158 INFO L415 sIntCurrentIteration]: We unified 454 AI predicates to 454 [2018-11-07 18:15:23,158 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:15:23,159 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:15:23,159 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-07 18:15:23,159 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:15:23,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-07 18:15:23,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-07 18:15:23,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2018-11-07 18:15:23,160 INFO L87 Difference]: Start difference. First operand 12055 states and 16666 transitions. Second operand 23 states. [2018-11-07 18:15:25,367 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:15:44,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:15:44,429 INFO L93 Difference]: Finished difference Result 22040 states and 31531 transitions. [2018-11-07 18:15:44,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-07 18:15:44,430 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 455 [2018-11-07 18:15:44,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:15:44,467 INFO L225 Difference]: With dead ends: 22040 [2018-11-07 18:15:44,468 INFO L226 Difference]: Without dead ends: 12696 [2018-11-07 18:15:44,488 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 467 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=259, Invalid=1001, Unknown=0, NotChecked=0, Total=1260 [2018-11-07 18:15:44,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12696 states. [2018-11-07 18:15:44,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12696 to 12688. [2018-11-07 18:15:44,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12688 states. [2018-11-07 18:15:44,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12688 states to 12688 states and 17349 transitions. [2018-11-07 18:15:44,708 INFO L78 Accepts]: Start accepts. Automaton has 12688 states and 17349 transitions. Word has length 455 [2018-11-07 18:15:44,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:15:44,709 INFO L480 AbstractCegarLoop]: Abstraction has 12688 states and 17349 transitions. [2018-11-07 18:15:44,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-07 18:15:44,709 INFO L276 IsEmpty]: Start isEmpty. Operand 12688 states and 17349 transitions. [2018-11-07 18:15:44,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2018-11-07 18:15:44,732 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:15:44,733 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 18:15:44,733 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:15:44,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:15:44,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1440083631, now seen corresponding path program 1 times [2018-11-07 18:15:44,734 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:15:44,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:44,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:15:44,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:44,735 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:15:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:15:45,493 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2018-11-07 18:15:45,493 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:15:45,493 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:15:45,493 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 515 with the following transitions: [2018-11-07 18:15:45,494 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [215], [217], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [684], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1128], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:15:45,498 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:15:45,498 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:15:46,479 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:15:46,746 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:15:46,746 INFO L272 AbstractInterpreter]: Visited 250 different actions 747 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 18:15:46,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:15:46,755 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:15:46,755 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:15:46,755 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:15:46,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:15:46,765 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:15:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:15:46,930 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:15:47,501 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2018-11-07 18:15:47,501 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:15:47,664 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-07 18:15:47,775 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-07 18:15:48,358 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2018-11-07 18:15:48,380 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:15:48,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2018-11-07 18:15:48,380 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:15:48,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 18:15:48,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 18:15:48,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-11-07 18:15:48,382 INFO L87 Difference]: Start difference. First operand 12688 states and 17349 transitions. Second operand 9 states. Received shutdown request... [2018-11-07 18:15:52,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 18:15:52,598 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:15:52,605 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:15:52,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:15:52 BoogieIcfgContainer [2018-11-07 18:15:52,606 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:15:52,607 INFO L168 Benchmark]: Toolchain (without parser) took 218625.48 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 995.2 MB in the end (delta: 431.2 MB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-11-07 18:15:52,608 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 18:15:52,608 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1300.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-07 18:15:52,609 INFO L168 Benchmark]: Boogie Procedure Inliner took 173.36 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -884.4 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-11-07 18:15:52,610 INFO L168 Benchmark]: Boogie Preprocessor took 133.53 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 18:15:52,611 INFO L168 Benchmark]: RCFGBuilder took 5854.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 262.9 MB). Peak memory consumption was 262.9 MB. Max. memory is 7.1 GB. [2018-11-07 18:15:52,611 INFO L168 Benchmark]: TraceAbstraction took 211158.62 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 2.0 GB in the beginning and 995.2 MB in the end (delta: 978.6 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-11-07 18:15:52,616 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1300.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 173.36 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -884.4 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.53 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5854.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 262.9 MB). Peak memory consumption was 262.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211158.62 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 2.0 GB in the beginning and 995.2 MB in the end (delta: 978.6 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 37]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 37). Cancelled while BasicCegarLoop was constructing difference of abstraction (12688states) and FLOYD_HOARE automaton (currently 11 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (6680 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 211.0s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 185.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2573 SDtfs, 29619 SDslu, 2448 SDs, 0 SdLazy, 36038 SolverSat, 5565 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 69.8s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 2869 GetRequests, 2587 SyntacticMatches, 88 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1626 ImplicationChecksByTransitivity, 9.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12688occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.1s AbstIntTime, 6 AbstIntIterations, 5 AbstIntStrong, 0.9973389371834778 AbsIntWeakeningRatio, 0.08953488372093023 AbsIntAvgWeakeningVarsNumRemoved, 10.219767441860466 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 607 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 3155 NumberOfCodeBlocks, 3155 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 3657 ConstructedInterpolants, 0 QuantifiedInterpolants, 6681587 SizeOfPredicates, 1 NumberOfNonLiveVariables, 739 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 1649/2332 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown