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/Problem03_label18_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:52:20,103 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:52:20,105 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:52:20,120 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:52:20,120 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:52:20,122 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:52:20,123 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:52:20,125 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:52:20,129 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:52:20,130 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:52:20,131 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:52:20,131 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:52:20,132 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:52:20,133 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:52:20,134 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:52:20,135 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:52:20,136 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:52:20,138 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:52:20,140 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:52:20,141 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:52:20,142 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:52:20,146 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:52:20,148 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:52:20,148 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:52:20,149 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:52:20,149 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:52:20,150 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:52:20,151 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:52:20,152 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:52:20,153 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:52:20,153 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:52:20,154 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:52:20,154 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:52:20,154 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:52:20,155 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:52:20,160 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:52:20,160 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 18:52:20,180 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:52:20,181 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:52:20,181 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:52:20,181 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:52:20,182 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:52:20,182 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:52:20,182 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:52:20,182 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:52:20,182 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:52:20,183 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:52:20,183 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:52:20,183 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:52:20,183 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:52:20,184 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:52:20,184 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:52:20,184 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:52:20,185 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:52:20,185 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:52:20,185 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:52:20,185 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:52:20,185 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:52:20,186 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:52:20,186 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:52:20,186 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:52:20,186 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:52:20,186 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:52:20,187 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:52:20,187 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:52:20,187 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:52:20,187 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:52:20,187 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:52:20,188 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:52:20,188 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:52:20,188 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:52:20,188 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:52:20,232 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:52:20,249 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:52:20,254 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:52:20,256 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:52:20,256 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:52:20,257 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label18_true-unreach-call.c [2018-11-07 18:52:20,319 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c87432bb8/eb8660127ff547f29a49273f5c56a10e/FLAG8e2033c22 [2018-11-07 18:52:20,959 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:52:20,963 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label18_true-unreach-call.c [2018-11-07 18:52:20,982 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c87432bb8/eb8660127ff547f29a49273f5c56a10e/FLAG8e2033c22 [2018-11-07 18:52:21,000 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c87432bb8/eb8660127ff547f29a49273f5c56a10e [2018-11-07 18:52:21,011 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:52:21,013 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:52:21,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:52:21,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:52:21,018 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:52:21,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:52:21" (1/1) ... [2018-11-07 18:52:21,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f10323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:52:21, skipping insertion in model container [2018-11-07 18:52:21,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:52:21" (1/1) ... [2018-11-07 18:52:21,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:52:21,115 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:52:21,848 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:52:21,854 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:52:22,252 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:52:22,278 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:52:22,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:52:22 WrapperNode [2018-11-07 18:52:22,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:52:22,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:52:22,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:52:22,280 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:52:22,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:52:22" (1/1) ... [2018-11-07 18:52:22,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:52:22" (1/1) ... [2018-11-07 18:52:22,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:52:22,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:52:22,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:52:22,489 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:52:22,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:52:22" (1/1) ... [2018-11-07 18:52:22,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:52:22" (1/1) ... [2018-11-07 18:52:22,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:52:22" (1/1) ... [2018-11-07 18:52:22,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:52:22" (1/1) ... [2018-11-07 18:52:22,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:52:22" (1/1) ... [2018-11-07 18:52:22,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:52:22" (1/1) ... [2018-11-07 18:52:22,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:52:22" (1/1) ... [2018-11-07 18:52:22,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:52:22,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:52:22,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:52:22,647 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:52:22,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:52:22" (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 18:52:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:52:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:52:22,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:52:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:52:22,716 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:52:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:52:22,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:52:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:52:22,717 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:52:27,680 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:52:27,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:52:27 BoogieIcfgContainer [2018-11-07 18:52:27,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:52:27,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:52:27,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:52:27,686 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:52:27,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:52:21" (1/3) ... [2018-11-07 18:52:27,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c1fbf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:52:27, skipping insertion in model container [2018-11-07 18:52:27,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:52:22" (2/3) ... [2018-11-07 18:52:27,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c1fbf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:52:27, skipping insertion in model container [2018-11-07 18:52:27,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:52:27" (3/3) ... [2018-11-07 18:52:27,691 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label18_true-unreach-call.c [2018-11-07 18:52:27,701 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:52:27,712 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:52:27,731 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:52:27,779 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:52:27,780 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:52:27,780 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:52:27,780 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:52:27,780 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:52:27,781 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:52:27,781 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:52:27,781 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:52:27,822 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 18:52:27,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-11-07 18:52:27,855 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:52:27,859 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:27,862 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:52:27,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:52:27,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1820417999, now seen corresponding path program 1 times [2018-11-07 18:52:27,874 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:52:27,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:52:27,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:52:27,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:52:27,935 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:52:28,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:52:28,846 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:52:29,050 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 18:52:29,053 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:52:29,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:52:29,054 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:52:29,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:52:29,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:52:29,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:52:29,081 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-11-07 18:52:30,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:52:30,980 INFO L93 Difference]: Finished difference Result 848 states and 1491 transitions. [2018-11-07 18:52:30,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:52:30,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2018-11-07 18:52:30,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:52:31,005 INFO L225 Difference]: With dead ends: 848 [2018-11-07 18:52:31,006 INFO L226 Difference]: Without dead ends: 534 [2018-11-07 18:52:31,013 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:52:31,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2018-11-07 18:52:31,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 532. [2018-11-07 18:52:31,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2018-11-07 18:52:31,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 867 transitions. [2018-11-07 18:52:31,117 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 867 transitions. Word has length 210 [2018-11-07 18:52:31,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:52:31,119 INFO L480 AbstractCegarLoop]: Abstraction has 532 states and 867 transitions. [2018-11-07 18:52:31,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:52:31,119 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 867 transitions. [2018-11-07 18:52:31,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-11-07 18:52:31,127 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:52:31,127 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:31,128 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:52:31,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:52:31,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1878986571, now seen corresponding path program 1 times [2018-11-07 18:52:31,128 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:52:31,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:52:31,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:52:31,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:52:31,130 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:52:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:52:31,602 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 18:52:31,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:52:31,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:52:31,604 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:52:31,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:52:31,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:52:31,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:52:31,607 INFO L87 Difference]: Start difference. First operand 532 states and 867 transitions. Second operand 3 states. [2018-11-07 18:52:33,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:52:33,376 INFO L93 Difference]: Finished difference Result 1493 states and 2512 transitions. [2018-11-07 18:52:33,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:52:33,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 223 [2018-11-07 18:52:33,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:52:33,394 INFO L225 Difference]: With dead ends: 1493 [2018-11-07 18:52:33,394 INFO L226 Difference]: Without dead ends: 967 [2018-11-07 18:52:33,397 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:52:33,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2018-11-07 18:52:33,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 951. [2018-11-07 18:52:33,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 951 states. [2018-11-07 18:52:33,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1540 transitions. [2018-11-07 18:52:33,444 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1540 transitions. Word has length 223 [2018-11-07 18:52:33,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:52:33,446 INFO L480 AbstractCegarLoop]: Abstraction has 951 states and 1540 transitions. [2018-11-07 18:52:33,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:52:33,446 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1540 transitions. [2018-11-07 18:52:33,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-11-07 18:52:33,452 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:52:33,452 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:33,453 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:52:33,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:52:33,453 INFO L82 PathProgramCache]: Analyzing trace with hash -463761996, now seen corresponding path program 1 times [2018-11-07 18:52:33,453 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:52:33,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:52:33,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:52:33,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:52:33,455 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:52:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:52:33,750 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:52:34,017 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:52:34,017 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:52:34,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:52:34,017 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:52:34,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:52:34,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:52:34,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:52:34,019 INFO L87 Difference]: Start difference. First operand 951 states and 1540 transitions. Second operand 6 states. [2018-11-07 18:52:38,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:52:38,228 INFO L93 Difference]: Finished difference Result 2784 states and 4694 transitions. [2018-11-07 18:52:38,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:52:38,229 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 238 [2018-11-07 18:52:38,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:52:38,244 INFO L225 Difference]: With dead ends: 2784 [2018-11-07 18:52:38,244 INFO L226 Difference]: Without dead ends: 1839 [2018-11-07 18:52:38,248 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:52:38,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2018-11-07 18:52:38,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1809. [2018-11-07 18:52:38,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1809 states. [2018-11-07 18:52:38,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2782 transitions. [2018-11-07 18:52:38,337 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2782 transitions. Word has length 238 [2018-11-07 18:52:38,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:52:38,337 INFO L480 AbstractCegarLoop]: Abstraction has 1809 states and 2782 transitions. [2018-11-07 18:52:38,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:52:38,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2782 transitions. [2018-11-07 18:52:38,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-11-07 18:52:38,349 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:52:38,350 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:38,350 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:52:38,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:52:38,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1286729823, now seen corresponding path program 1 times [2018-11-07 18:52:38,351 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:52:38,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:52:38,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:52:38,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:52:38,353 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:52:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:52:38,943 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:52:38,944 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:52:38,944 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:52:38,945 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 258 with the following transitions: [2018-11-07 18:52:38,949 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1137], [1141], [1143], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:52:39,035 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:52:39,035 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:52:42,583 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:52:42,585 INFO L272 AbstractInterpreter]: Visited 214 different actions 422 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 18:52:42,736 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:52:42,736 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:52:45,061 INFO L227 lantSequenceWeakener]: Weakened 93 states. On average, predicates are now at 83.6% of their original sizes. [2018-11-07 18:52:45,061 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:52:50,372 INFO L415 sIntCurrentIteration]: We unified 256 AI predicates to 256 [2018-11-07 18:52:50,373 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:52:50,373 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:52:50,374 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-07 18:52:50,374 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:52:50,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-07 18:52:50,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-07 18:52:50,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2018-11-07 18:52:50,376 INFO L87 Difference]: Start difference. First operand 1809 states and 2782 transitions. Second operand 23 states. [2018-11-07 18:54:18,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:54:18,293 INFO L93 Difference]: Finished difference Result 4659 states and 6944 transitions. [2018-11-07 18:54:18,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-07 18:54:18,294 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 257 [2018-11-07 18:54:18,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:54:18,308 INFO L225 Difference]: With dead ends: 4659 [2018-11-07 18:54:18,308 INFO L226 Difference]: Without dead ends: 2856 [2018-11-07 18:54:18,314 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 267 GetRequests, 202 SyntacticMatches, 33 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=233, Invalid=889, Unknown=0, NotChecked=0, Total=1122 [2018-11-07 18:54:18,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2018-11-07 18:54:18,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 2853. [2018-11-07 18:54:18,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2853 states. [2018-11-07 18:54:18,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 3907 transitions. [2018-11-07 18:54:18,388 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 3907 transitions. Word has length 257 [2018-11-07 18:54:18,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:54:18,388 INFO L480 AbstractCegarLoop]: Abstraction has 2853 states and 3907 transitions. [2018-11-07 18:54:18,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-07 18:54:18,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 3907 transitions. [2018-11-07 18:54:18,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-11-07 18:54:18,399 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:54:18,399 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:54:18,400 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:54:18,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:54:18,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1350497136, now seen corresponding path program 1 times [2018-11-07 18:54:18,400 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:54:18,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:54:18,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:54:18,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:54:18,402 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:54:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:54:18,674 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:54:18,674 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:54:18,674 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:54:18,675 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 258 with the following transitions: [2018-11-07 18:54:18,676 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [73], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1137], [1141], [1143], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:54:18,686 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:54:18,686 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:54:21,032 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:54:21,032 INFO L272 AbstractInterpreter]: Visited 214 different actions 421 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 18:54:21,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:54:21,073 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:54:22,207 INFO L227 lantSequenceWeakener]: Weakened 252 states. On average, predicates are now at 74.56% of their original sizes. [2018-11-07 18:54:22,207 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:54:22,441 INFO L415 sIntCurrentIteration]: We unified 256 AI predicates to 256 [2018-11-07 18:54:22,441 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:54:22,441 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:54:22,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 20 [2018-11-07 18:54:22,442 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:54:22,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 18:54:22,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 18:54:22,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2018-11-07 18:54:22,443 INFO L87 Difference]: Start difference. First operand 2853 states and 3907 transitions. Second operand 16 states. [2018-11-07 18:55:04,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:55:04,578 INFO L93 Difference]: Finished difference Result 5530 states and 7916 transitions. [2018-11-07 18:55:04,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 18:55:04,578 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 257 [2018-11-07 18:55:04,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:55:04,596 INFO L225 Difference]: With dead ends: 5530 [2018-11-07 18:55:04,596 INFO L226 Difference]: Without dead ends: 3727 [2018-11-07 18:55:04,603 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 265 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2018-11-07 18:55:04,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3727 states. [2018-11-07 18:55:04,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3727 to 3725. [2018-11-07 18:55:04,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3725 states. [2018-11-07 18:55:04,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3725 states to 3725 states and 4931 transitions. [2018-11-07 18:55:04,695 INFO L78 Accepts]: Start accepts. Automaton has 3725 states and 4931 transitions. Word has length 257 [2018-11-07 18:55:04,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:55:04,695 INFO L480 AbstractCegarLoop]: Abstraction has 3725 states and 4931 transitions. [2018-11-07 18:55:04,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 18:55:04,695 INFO L276 IsEmpty]: Start isEmpty. Operand 3725 states and 4931 transitions. [2018-11-07 18:55:04,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-11-07 18:55:04,708 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:55:04,709 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:55:04,709 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:55:04,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:55:04,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1876536729, now seen corresponding path program 1 times [2018-11-07 18:55:04,710 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:55:04,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:55:04,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:55:04,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:55:04,711 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:55:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:55:05,309 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 18:55:05,310 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:55:05,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:55:05,310 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:55:05,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:55:05,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:55:05,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:55:05,311 INFO L87 Difference]: Start difference. First operand 3725 states and 4931 transitions. Second operand 6 states. [2018-11-07 18:55:07,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:55:07,283 INFO L93 Difference]: Finished difference Result 7004 states and 9766 transitions. [2018-11-07 18:55:07,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-07 18:55:07,289 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 258 [2018-11-07 18:55:07,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:55:07,307 INFO L225 Difference]: With dead ends: 7004 [2018-11-07 18:55:07,307 INFO L226 Difference]: Without dead ends: 4088 [2018-11-07 18:55:07,318 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:55:07,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4088 states. [2018-11-07 18:55:07,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4088 to 3967. [2018-11-07 18:55:07,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3967 states. [2018-11-07 18:55:07,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3967 states to 3967 states and 5205 transitions. [2018-11-07 18:55:07,409 INFO L78 Accepts]: Start accepts. Automaton has 3967 states and 5205 transitions. Word has length 258 [2018-11-07 18:55:07,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:55:07,410 INFO L480 AbstractCegarLoop]: Abstraction has 3967 states and 5205 transitions. [2018-11-07 18:55:07,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:55:07,410 INFO L276 IsEmpty]: Start isEmpty. Operand 3967 states and 5205 transitions. [2018-11-07 18:55:07,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-11-07 18:55:07,428 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:55:07,428 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:55:07,429 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:55:07,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:55:07,429 INFO L82 PathProgramCache]: Analyzing trace with hash -499129863, now seen corresponding path program 1 times [2018-11-07 18:55:07,429 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:55:07,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:55:07,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:55:07,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:55:07,431 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:55:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:55:07,866 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:55:07,866 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:55:07,866 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:55:07,866 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 337 with the following transitions: [2018-11-07 18:55:07,867 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [73], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1137], [1141], [1143], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:55:07,875 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:55:07,875 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:55:09,284 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:55:09,285 INFO L272 AbstractInterpreter]: Visited 214 different actions 422 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 18:55:09,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:55:09,291 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:55:10,539 INFO L227 lantSequenceWeakener]: Weakened 331 states. On average, predicates are now at 73.41% of their original sizes. [2018-11-07 18:55:10,540 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:55:10,797 INFO L415 sIntCurrentIteration]: We unified 335 AI predicates to 335 [2018-11-07 18:55:10,798 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:55:10,798 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:55:10,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-11-07 18:55:10,798 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:55:10,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 18:55:10,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 18:55:10,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-11-07 18:55:10,800 INFO L87 Difference]: Start difference. First operand 3967 states and 5205 transitions. Second operand 17 states. [2018-11-07 18:55:38,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:55:38,710 INFO L93 Difference]: Finished difference Result 7942 states and 11032 transitions. [2018-11-07 18:55:38,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 18:55:38,711 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 336 [2018-11-07 18:55:38,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:55:38,729 INFO L225 Difference]: With dead ends: 7942 [2018-11-07 18:55:38,729 INFO L226 Difference]: Without dead ends: 5025 [2018-11-07 18:55:38,739 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 344 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2018-11-07 18:55:38,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5025 states. [2018-11-07 18:55:38,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5025 to 5024. [2018-11-07 18:55:38,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5024 states. [2018-11-07 18:55:38,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5024 states to 5024 states and 6510 transitions. [2018-11-07 18:55:38,840 INFO L78 Accepts]: Start accepts. Automaton has 5024 states and 6510 transitions. Word has length 336 [2018-11-07 18:55:38,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:55:38,840 INFO L480 AbstractCegarLoop]: Abstraction has 5024 states and 6510 transitions. [2018-11-07 18:55:38,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 18:55:38,841 INFO L276 IsEmpty]: Start isEmpty. Operand 5024 states and 6510 transitions. [2018-11-07 18:55:38,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-11-07 18:55:38,860 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:55:38,861 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:55:38,861 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:55:38,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:55:38,861 INFO L82 PathProgramCache]: Analyzing trace with hash 802495686, now seen corresponding path program 1 times [2018-11-07 18:55:38,861 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:55:38,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:55:38,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:55:38,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:55:38,863 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:55:38,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:55:39,173 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:55:39,543 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 158 proven. 44 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2018-11-07 18:55:39,543 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:55:39,543 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:55:39,543 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 342 with the following transitions: [2018-11-07 18:55:39,544 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1137], [1141], [1143], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:55:39,549 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:55:39,549 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:55:42,277 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:55:42,278 INFO L272 AbstractInterpreter]: Visited 217 different actions 647 times. Merged at 8 different actions 20 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 18:55:42,287 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:55:42,288 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:55:42,288 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:55:42,288 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 18:55:42,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:55:42,297 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:55:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:55:42,590 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:55:42,975 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-11-07 18:55:42,975 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:55:43,205 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 171 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-11-07 18:55:43,227 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:55:43,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-11-07 18:55:43,227 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:55:43,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 18:55:43,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 18:55:43,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-11-07 18:55:43,229 INFO L87 Difference]: Start difference. First operand 5024 states and 6510 transitions. Second operand 10 states. [2018-11-07 18:55:43,771 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 6 [2018-11-07 18:55:48,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:55:48,246 INFO L93 Difference]: Finished difference Result 12002 states and 16106 transitions. [2018-11-07 18:55:48,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 18:55:48,246 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 341 [2018-11-07 18:55:48,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:55:48,285 INFO L225 Difference]: With dead ends: 12002 [2018-11-07 18:55:48,285 INFO L226 Difference]: Without dead ends: 8028 [2018-11-07 18:55:48,311 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 688 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2018-11-07 18:55:48,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8028 states. [2018-11-07 18:55:48,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8028 to 8022. [2018-11-07 18:55:48,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8022 states. [2018-11-07 18:55:48,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8022 states to 8022 states and 9816 transitions. [2018-11-07 18:55:48,526 INFO L78 Accepts]: Start accepts. Automaton has 8022 states and 9816 transitions. Word has length 341 [2018-11-07 18:55:48,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:55:48,527 INFO L480 AbstractCegarLoop]: Abstraction has 8022 states and 9816 transitions. [2018-11-07 18:55:48,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 18:55:48,527 INFO L276 IsEmpty]: Start isEmpty. Operand 8022 states and 9816 transitions. [2018-11-07 18:55:48,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-11-07 18:55:48,563 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:55:48,564 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 18:55:48,564 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:55:48,564 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:55:48,565 INFO L82 PathProgramCache]: Analyzing trace with hash 476916234, now seen corresponding path program 1 times [2018-11-07 18:55:48,565 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:55:48,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:55:48,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:55:48,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:55:48,567 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:55:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:55:49,206 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 18:55:49,436 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 187 proven. 58 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-07 18:55:49,437 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:55:49,437 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:55:49,437 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 374 with the following transitions: [2018-11-07 18:55:49,437 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [334], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1137], [1141], [1143], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:55:49,445 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:55:49,445 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:55:53,334 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:55:53,335 INFO L272 AbstractInterpreter]: Visited 217 different actions 645 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 18:55:53,365 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:55:53,365 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:55:53,365 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:55:53,365 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:55:53,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:55:53,385 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:55:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:55:53,655 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:55:54,062 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 162 proven. 74 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-11-07 18:55:54,062 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:55:54,621 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 234 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-11-07 18:55:54,652 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:55:54,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2018-11-07 18:55:54,652 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:55:54,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 18:55:54,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 18:55:54,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:55:54,654 INFO L87 Difference]: Start difference. First operand 8022 states and 9816 transitions. Second operand 8 states. [2018-11-07 18:56:00,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:56:00,629 INFO L93 Difference]: Finished difference Result 25718 states and 33569 transitions. [2018-11-07 18:56:00,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-07 18:56:00,630 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 373 [2018-11-07 18:56:00,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:56:00,695 INFO L225 Difference]: With dead ends: 25718 [2018-11-07 18:56:00,695 INFO L226 Difference]: Without dead ends: 18620 [2018-11-07 18:56:00,728 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 799 GetRequests, 765 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=250, Invalid=806, Unknown=0, NotChecked=0, Total=1056 [2018-11-07 18:56:00,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18620 states. [2018-11-07 18:56:01,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18620 to 17873. [2018-11-07 18:56:01,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17873 states. [2018-11-07 18:56:01,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17873 states to 17873 states and 21045 transitions. [2018-11-07 18:56:01,130 INFO L78 Accepts]: Start accepts. Automaton has 17873 states and 21045 transitions. Word has length 373 [2018-11-07 18:56:01,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:56:01,130 INFO L480 AbstractCegarLoop]: Abstraction has 17873 states and 21045 transitions. [2018-11-07 18:56:01,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 18:56:01,130 INFO L276 IsEmpty]: Start isEmpty. Operand 17873 states and 21045 transitions. [2018-11-07 18:56:01,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2018-11-07 18:56:01,194 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:56:01,194 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 18:56:01,194 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:56:01,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:01,195 INFO L82 PathProgramCache]: Analyzing trace with hash 731829533, now seen corresponding path program 1 times [2018-11-07 18:56:01,195 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:56:01,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:01,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:56:01,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:01,196 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:56:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:56:02,291 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 176 proven. 79 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:56:02,292 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:56:02,292 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:56:02,292 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 390 with the following transitions: [2018-11-07 18:56:02,293 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [268], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1137], [1141], [1143], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:56:02,298 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:56:02,298 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:56:06,398 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:56:06,399 INFO L272 AbstractInterpreter]: Visited 216 different actions 861 times. Merged at 8 different actions 33 times. Never widened. Found 7 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 18:56:06,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:06,406 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:56:06,406 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:56:06,406 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:56:06,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:56:06,417 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:56:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:56:06,668 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:56:07,163 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-11-07 18:56:07,163 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:56:07,407 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 185 proven. 65 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-07 18:56:07,428 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:56:07,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-11-07 18:56:07,428 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:56:07,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 18:56:07,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 18:56:07,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-11-07 18:56:07,430 INFO L87 Difference]: Start difference. First operand 17873 states and 21045 transitions. Second operand 12 states. [2018-11-07 18:56:14,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:56:14,166 INFO L93 Difference]: Finished difference Result 46166 states and 55476 transitions. [2018-11-07 18:56:14,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-11-07 18:56:14,168 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 389 [2018-11-07 18:56:14,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:56:14,257 INFO L225 Difference]: With dead ends: 46166 [2018-11-07 18:56:14,258 INFO L226 Difference]: Without dead ends: 28926 [2018-11-07 18:56:14,291 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 842 GetRequests, 801 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=390, Invalid=1332, Unknown=0, NotChecked=0, Total=1722 [2018-11-07 18:56:14,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28926 states. [2018-11-07 18:56:14,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28926 to 28802. [2018-11-07 18:56:14,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28802 states. [2018-11-07 18:56:14,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28802 states to 28802 states and 34126 transitions. [2018-11-07 18:56:14,846 INFO L78 Accepts]: Start accepts. Automaton has 28802 states and 34126 transitions. Word has length 389 [2018-11-07 18:56:14,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:56:14,846 INFO L480 AbstractCegarLoop]: Abstraction has 28802 states and 34126 transitions. [2018-11-07 18:56:14,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-07 18:56:14,847 INFO L276 IsEmpty]: Start isEmpty. Operand 28802 states and 34126 transitions. [2018-11-07 18:56:14,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2018-11-07 18:56:14,923 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:56:14,923 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:56:14,923 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:56:14,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:14,924 INFO L82 PathProgramCache]: Analyzing trace with hash -192911202, now seen corresponding path program 1 times [2018-11-07 18:56:14,924 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:56:14,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:14,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:56:14,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:14,925 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:56:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:56:15,623 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 18:56:15,935 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 256 proven. 81 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2018-11-07 18:56:15,935 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:56:15,935 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:56:15,935 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 406 with the following transitions: [2018-11-07 18:56:15,936 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1137], [1141], [1143], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:56:15,941 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:56:15,941 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-11-07 18:56:16,284 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 18:56:16,284 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 18:56:16,285 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 18:56:16,285 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:56:16,285 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:56:16,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:56:16,301 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:56:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:56:16,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:56:16,616 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 18:56:16,817 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:56:16,817 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:56:16,823 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:56:16,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:56:16 BoogieIcfgContainer [2018-11-07 18:56:16,823 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:56:16,824 INFO L168 Benchmark]: Toolchain (without parser) took 235812.51 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -350.4 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 18:56:16,825 INFO L168 Benchmark]: CDTParser took 0.25 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 18:56:16,826 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1265.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 18:56:16,826 INFO L168 Benchmark]: Boogie Procedure Inliner took 207.81 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -885.6 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. [2018-11-07 18:56:16,828 INFO L168 Benchmark]: Boogie Preprocessor took 158.11 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 18:56:16,829 INFO L168 Benchmark]: RCFGBuilder took 5034.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 269.2 MB). Peak memory consumption was 269.2 MB. Max. memory is 7.1 GB. [2018-11-07 18:56:16,830 INFO L168 Benchmark]: TraceAbstraction took 229141.05 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 1.8 GB in the end (delta: 181.5 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-07 18:56:16,836 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 1265.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 207.81 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -885.6 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 158.11 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 5034.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 269.2 MB). Peak memory consumption was 269.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 229141.05 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 1.8 GB in the end (delta: 181.5 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1644]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1644). Cancelled while BasicCegarLoop was analyzing trace of length 406 with TraceHistMax 7,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 229.0s OverallTime, 11 OverallIterations, 7 TraceHistogramMax, 186.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2235 SDtfs, 18677 SDslu, 3096 SDs, 0 SdLazy, 25514 SolverSat, 4456 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 115.3s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 3259 GetRequests, 3028 SyntacticMatches, 47 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1258 ImplicationChecksByTransitivity, 12.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28802occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 18.7s AbstIntTime, 7 AbstIntIterations, 3 AbstIntStrong, 0.9992855855153635 AbsIntWeakeningRatio, 0.22904368358913813 AbsIntAvgWeakeningVarsNumRemoved, 53.08500590318772 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 1052 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 3985 NumberOfCodeBlocks, 3985 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 5072 ConstructedInterpolants, 0 QuantifiedInterpolants, 4541369 SizeOfPredicates, 4 NumberOfNonLiveVariables, 4466 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 2380/2723 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown