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/Problem19_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 21:19:35,579 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 21:19:35,581 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 21:19:35,593 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 21:19:35,594 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 21:19:35,595 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 21:19:35,596 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 21:19:35,598 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 21:19:35,600 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 21:19:35,601 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 21:19:35,602 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 21:19:35,602 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 21:19:35,603 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 21:19:35,604 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 21:19:35,606 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 21:19:35,607 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 21:19:35,607 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 21:19:35,610 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 21:19:35,612 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 21:19:35,613 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 21:19:35,615 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 21:19:35,616 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 21:19:35,619 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 21:19:35,619 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 21:19:35,619 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 21:19:35,620 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 21:19:35,621 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 21:19:35,622 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 21:19:35,623 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 21:19:35,625 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 21:19:35,625 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 21:19:35,626 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 21:19:35,626 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 21:19:35,627 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 21:19:35,628 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 21:19:35,629 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 21:19:35,629 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 21:19:35,661 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 21:19:35,661 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 21:19:35,662 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 21:19:35,662 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 21:19:35,664 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 21:19:35,664 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 21:19:35,665 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 21:19:35,665 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 21:19:35,665 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 21:19:35,665 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 21:19:35,665 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 21:19:35,668 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 21:19:35,668 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 21:19:35,669 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 21:19:35,669 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 21:19:35,670 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 21:19:35,670 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 21:19:35,670 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 21:19:35,670 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 21:19:35,670 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 21:19:35,672 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 21:19:35,672 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 21:19:35,672 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 21:19:35,672 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 21:19:35,673 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 21:19:35,673 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 21:19:35,673 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 21:19:35,673 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 21:19:35,673 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 21:19:35,674 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 21:19:35,674 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 21:19:35,674 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 21:19:35,674 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 21:19:35,674 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 21:19:35,674 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 21:19:35,734 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 21:19:35,747 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 21:19:35,753 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 21:19:35,754 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 21:19:35,755 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 21:19:35,756 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label05_true-unreach-call.c [2018-11-07 21:19:35,812 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94564f072/6cfe6f5bf7ad4407af5aa0066d1b281a/FLAGe3fc8e273 [2018-11-07 21:19:36,881 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 21:19:36,882 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label05_true-unreach-call.c [2018-11-07 21:19:36,936 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94564f072/6cfe6f5bf7ad4407af5aa0066d1b281a/FLAGe3fc8e273 [2018-11-07 21:19:36,957 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94564f072/6cfe6f5bf7ad4407af5aa0066d1b281a [2018-11-07 21:19:36,971 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 21:19:36,973 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 21:19:36,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 21:19:36,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 21:19:36,979 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 21:19:36,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:19:36" (1/1) ... [2018-11-07 21:19:36,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@596e7265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:19:36, skipping insertion in model container [2018-11-07 21:19:36,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:19:36" (1/1) ... [2018-11-07 21:19:36,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 21:19:37,243 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 21:19:39,286 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:19:39,292 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 21:19:40,415 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:19:40,474 INFO L193 MainTranslator]: Completed translation [2018-11-07 21:19:40,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:19:40 WrapperNode [2018-11-07 21:19:40,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 21:19:40,476 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 21:19:40,476 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 21:19:40,476 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 21:19:40,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:19:40" (1/1) ... [2018-11-07 21:19:41,115 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:19:40" (1/1) ... [2018-11-07 21:19:41,129 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 21:19:41,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 21:19:41,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 21:19:41,130 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 21:19:41,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:19:40" (1/1) ... [2018-11-07 21:19:41,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:19:40" (1/1) ... [2018-11-07 21:19:41,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:19:40" (1/1) ... [2018-11-07 21:19:41,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:19:40" (1/1) ... [2018-11-07 21:19:41,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:19:40" (1/1) ... [2018-11-07 21:19:41,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:19:40" (1/1) ... [2018-11-07 21:19:41,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:19:40" (1/1) ... [2018-11-07 21:19:41,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 21:19:41,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 21:19:41,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 21:19:41,689 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 21:19:41,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:19:40" (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 21:19:41,762 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 21:19:41,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 21:19:41,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 21:19:41,763 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 21:19:41,763 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 21:19:41,764 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 21:19:41,764 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 21:19:41,764 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 21:19:41,764 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 21:19:41,764 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 21:19:41,765 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 21:19:41,765 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 21:19:41,765 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 21:19:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 21:19:41,767 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 21:19:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 21:19:41,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 21:19:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 21:19:41,767 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 21:20:00,921 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 21:20:00,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:20:00 BoogieIcfgContainer [2018-11-07 21:20:00,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 21:20:00,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 21:20:00,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 21:20:00,928 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 21:20:00,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:19:36" (1/3) ... [2018-11-07 21:20:00,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d3ea01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:20:00, skipping insertion in model container [2018-11-07 21:20:00,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:19:40" (2/3) ... [2018-11-07 21:20:00,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d3ea01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:20:00, skipping insertion in model container [2018-11-07 21:20:00,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:20:00" (3/3) ... [2018-11-07 21:20:00,934 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label05_true-unreach-call.c [2018-11-07 21:20:00,944 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 21:20:00,955 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 21:20:00,973 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 21:20:01,030 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 21:20:01,031 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 21:20:01,031 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 21:20:01,031 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 21:20:01,031 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 21:20:01,031 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 21:20:01,031 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 21:20:01,032 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 21:20:01,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 21:20:01,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-07 21:20:01,112 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:20:01,113 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] [2018-11-07 21:20:01,115 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:20:01,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:20:01,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1860482762, now seen corresponding path program 1 times [2018-11-07 21:20:01,123 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:20:01,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:20:01,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:20:01,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:20:01,170 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:20:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:20:01,646 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:20:01,757 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 21:20:01,760 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:20:01,760 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 21:20:01,760 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:20:01,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 21:20:01,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 21:20:01,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 21:20:01,788 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-11-07 21:20:15,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:20:15,296 INFO L93 Difference]: Finished difference Result 4995 states and 9413 transitions. [2018-11-07 21:20:15,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 21:20:15,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2018-11-07 21:20:15,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:20:15,351 INFO L225 Difference]: With dead ends: 4995 [2018-11-07 21:20:15,351 INFO L226 Difference]: Without dead ends: 3215 [2018-11-07 21:20:15,363 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 21:20:15,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3215 states. [2018-11-07 21:20:15,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3215 to 3213. [2018-11-07 21:20:15,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3213 states. [2018-11-07 21:20:15,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3213 states to 3213 states and 5833 transitions. [2018-11-07 21:20:15,617 INFO L78 Accepts]: Start accepts. Automaton has 3213 states and 5833 transitions. Word has length 67 [2018-11-07 21:20:15,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:20:15,618 INFO L480 AbstractCegarLoop]: Abstraction has 3213 states and 5833 transitions. [2018-11-07 21:20:15,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 21:20:15,618 INFO L276 IsEmpty]: Start isEmpty. Operand 3213 states and 5833 transitions. [2018-11-07 21:20:15,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-11-07 21:20:15,631 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:20:15,631 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 21:20:15,632 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:20:15,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:20:15,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1310005478, now seen corresponding path program 1 times [2018-11-07 21:20:15,632 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:20:15,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:20:15,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:20:15,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:20:15,635 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:20:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:20:16,002 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:20:16,003 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:20:16,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 21:20:16,003 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:20:16,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 21:20:16,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 21:20:16,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 21:20:16,006 INFO L87 Difference]: Start difference. First operand 3213 states and 5833 transitions. Second operand 5 states. [2018-11-07 21:20:44,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:20:44,266 INFO L93 Difference]: Finished difference Result 12250 states and 22705 transitions. [2018-11-07 21:20:44,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 21:20:44,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2018-11-07 21:20:44,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:20:44,324 INFO L225 Difference]: With dead ends: 12250 [2018-11-07 21:20:44,324 INFO L226 Difference]: Without dead ends: 9043 [2018-11-07 21:20:44,340 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 21:20:44,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9043 states. [2018-11-07 21:20:44,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9043 to 8962. [2018-11-07 21:20:44,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8962 states. [2018-11-07 21:20:44,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8962 states to 8962 states and 13239 transitions. [2018-11-07 21:20:44,622 INFO L78 Accepts]: Start accepts. Automaton has 8962 states and 13239 transitions. Word has length 141 [2018-11-07 21:20:44,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:20:44,623 INFO L480 AbstractCegarLoop]: Abstraction has 8962 states and 13239 transitions. [2018-11-07 21:20:44,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 21:20:44,623 INFO L276 IsEmpty]: Start isEmpty. Operand 8962 states and 13239 transitions. [2018-11-07 21:20:44,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-07 21:20:44,635 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:20:44,635 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 21:20:44,636 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:20:44,636 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:20:44,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1307216630, now seen corresponding path program 1 times [2018-11-07 21:20:44,636 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:20:44,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:20:44,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:20:44,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:20:44,638 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:20:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:20:44,924 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:20:44,924 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:20:44,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:20:44,925 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:20:44,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:20:44,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:20:44,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:20:44,926 INFO L87 Difference]: Start difference. First operand 8962 states and 13239 transitions. Second operand 6 states. [2018-11-07 21:20:47,081 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 21:21:00,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:21:00,166 INFO L93 Difference]: Finished difference Result 27252 states and 40792 transitions. [2018-11-07 21:21:00,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 21:21:00,168 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-11-07 21:21:00,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:21:00,245 INFO L225 Difference]: With dead ends: 27252 [2018-11-07 21:21:00,246 INFO L226 Difference]: Without dead ends: 18296 [2018-11-07 21:21:00,273 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 21:21:00,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18296 states. [2018-11-07 21:21:00,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18296 to 17994. [2018-11-07 21:21:00,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17994 states. [2018-11-07 21:21:00,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17994 states to 17994 states and 26025 transitions. [2018-11-07 21:21:00,690 INFO L78 Accepts]: Start accepts. Automaton has 17994 states and 26025 transitions. Word has length 149 [2018-11-07 21:21:00,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:21:00,691 INFO L480 AbstractCegarLoop]: Abstraction has 17994 states and 26025 transitions. [2018-11-07 21:21:00,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:21:00,691 INFO L276 IsEmpty]: Start isEmpty. Operand 17994 states and 26025 transitions. [2018-11-07 21:21:00,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-11-07 21:21:00,694 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:21:00,695 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:21:00,695 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:21:00,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:21:00,696 INFO L82 PathProgramCache]: Analyzing trace with hash 899038028, now seen corresponding path program 1 times [2018-11-07 21:21:00,696 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:21:00,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:21:00,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:21:00,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:21:00,697 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:21:00,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:21:01,017 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:21:01,017 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:21:01,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 21:21:01,017 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:21:01,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 21:21:01,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 21:21:01,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 21:21:01,020 INFO L87 Difference]: Start difference. First operand 17994 states and 26025 transitions. Second operand 5 states. [2018-11-07 21:21:19,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:21:19,211 INFO L93 Difference]: Finished difference Result 55248 states and 81599 transitions. [2018-11-07 21:21:19,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 21:21:19,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2018-11-07 21:21:19,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:21:19,350 INFO L225 Difference]: With dead ends: 55248 [2018-11-07 21:21:19,350 INFO L226 Difference]: Without dead ends: 37260 [2018-11-07 21:21:19,402 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 21:21:19,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37260 states. [2018-11-07 21:21:20,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37260 to 36332. [2018-11-07 21:21:20,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36332 states. [2018-11-07 21:21:20,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36332 states to 36332 states and 47855 transitions. [2018-11-07 21:21:20,162 INFO L78 Accepts]: Start accepts. Automaton has 36332 states and 47855 transitions. Word has length 169 [2018-11-07 21:21:20,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:21:20,163 INFO L480 AbstractCegarLoop]: Abstraction has 36332 states and 47855 transitions. [2018-11-07 21:21:20,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 21:21:20,163 INFO L276 IsEmpty]: Start isEmpty. Operand 36332 states and 47855 transitions. [2018-11-07 21:21:20,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-11-07 21:21:20,170 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:21:20,171 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 21:21:20,171 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:21:20,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:21:20,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1152657023, now seen corresponding path program 1 times [2018-11-07 21:21:20,172 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:21:20,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:21:20,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:21:20,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:21:20,173 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:21:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:21:20,476 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:21:20,930 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:21:20,931 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:21:20,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:21:20,931 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:21:20,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:21:20,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:21:20,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:21:20,933 INFO L87 Difference]: Start difference. First operand 36332 states and 47855 transitions. Second operand 6 states. [2018-11-07 21:21:36,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:21:36,400 INFO L93 Difference]: Finished difference Result 86444 states and 117379 transitions. [2018-11-07 21:21:36,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:21:36,401 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 232 [2018-11-07 21:21:36,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:21:36,563 INFO L225 Difference]: With dead ends: 86444 [2018-11-07 21:21:36,563 INFO L226 Difference]: Without dead ends: 50118 [2018-11-07 21:21:36,646 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 21:21:36,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50118 states. [2018-11-07 21:21:37,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50118 to 49168. [2018-11-07 21:21:37,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49168 states. [2018-11-07 21:21:37,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49168 states to 49168 states and 63615 transitions. [2018-11-07 21:21:37,530 INFO L78 Accepts]: Start accepts. Automaton has 49168 states and 63615 transitions. Word has length 232 [2018-11-07 21:21:37,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:21:37,531 INFO L480 AbstractCegarLoop]: Abstraction has 49168 states and 63615 transitions. [2018-11-07 21:21:37,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:21:37,531 INFO L276 IsEmpty]: Start isEmpty. Operand 49168 states and 63615 transitions. [2018-11-07 21:21:37,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-11-07 21:21:37,536 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:21:37,536 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 21:21:37,536 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:21:37,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:21:37,537 INFO L82 PathProgramCache]: Analyzing trace with hash -419369166, now seen corresponding path program 1 times [2018-11-07 21:21:37,537 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:21:37,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:21:37,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:21:37,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:21:37,538 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:21:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:21:37,836 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:21:37,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:21:37,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 21:21:37,837 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:21:37,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 21:21:37,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 21:21:37,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:21:37,838 INFO L87 Difference]: Start difference. First operand 49168 states and 63615 transitions. Second operand 4 states. [2018-11-07 21:21:53,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:21:53,290 INFO L93 Difference]: Finished difference Result 179561 states and 250457 transitions. [2018-11-07 21:21:53,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 21:21:53,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 279 [2018-11-07 21:21:53,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:21:53,680 INFO L225 Difference]: With dead ends: 179561 [2018-11-07 21:21:53,680 INFO L226 Difference]: Without dead ends: 130399 [2018-11-07 21:21:53,796 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:21:53,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130399 states. [2018-11-07 21:21:55,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130399 to 130026. [2018-11-07 21:21:55,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130026 states. [2018-11-07 21:21:55,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130026 states to 130026 states and 172363 transitions. [2018-11-07 21:21:55,910 INFO L78 Accepts]: Start accepts. Automaton has 130026 states and 172363 transitions. Word has length 279 [2018-11-07 21:21:55,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:21:55,911 INFO L480 AbstractCegarLoop]: Abstraction has 130026 states and 172363 transitions. [2018-11-07 21:21:55,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 21:21:55,911 INFO L276 IsEmpty]: Start isEmpty. Operand 130026 states and 172363 transitions. [2018-11-07 21:21:55,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2018-11-07 21:21:55,945 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:21:55,945 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 21:21:55,946 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:21:55,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:21:55,946 INFO L82 PathProgramCache]: Analyzing trace with hash -555806953, now seen corresponding path program 1 times [2018-11-07 21:21:55,946 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:21:55,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:21:55,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:21:55,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:21:55,947 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:21:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:21:57,278 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 395 proven. 98 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-11-07 21:21:57,278 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:21:57,279 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:21:57,279 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 596 with the following transitions: [2018-11-07 21:21:57,282 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5594], [5602], [5610], [5618], [5626], [5634], [5642], [5650], [5658], [5662], [5664], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5877], [5878], [5882], [5886], [5890], [5894], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5977], [5981], [5985], [5996], [6000], [6004], [6008], [6012], [6016], [6020], [6024], [6028], [6032], [6036], [6040], [6051], [6055], [6059], [6063], [6067], [6071], [6075], [6079], [6083], [6087], [6091], [6102], [6106], [6110], [6121], [6125], [6129], [6140], [6144], [6148], [6152], [6156], [6160], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6251], [6255], [6259], [6263], [6267], [6278], [6282], [6286], [6290], [6294], [6298], [6302], [6306], [6310], [6314], [6325], [6329], [6333], [6344], [6348], [6352], [6356], [6360], [6371], [6375], [6379], [6383], [6387], [6391], [6402], [6413], [6417], [6420], [6421], [6425], [6429], [6432], [6437], [6439], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 21:21:57,341 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:21:57,341 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:21:58,208 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:21:58,217 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:21:58,219 INFO L272 AbstractInterpreter]: Visited 221 different actions 221 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 21:21:58,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:21:58,262 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:21:59,415 INFO L227 lantSequenceWeakener]: Weakened 581 states. On average, predicates are now at 75.33% of their original sizes. [2018-11-07 21:21:59,416 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:21:59,800 INFO L415 sIntCurrentIteration]: We unified 594 AI predicates to 594 [2018-11-07 21:21:59,800 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:21:59,801 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:21:59,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 21:21:59,802 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:21:59,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 21:21:59,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 21:21:59,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 21:21:59,803 INFO L87 Difference]: Start difference. First operand 130026 states and 172363 transitions. Second operand 7 states. [2018-11-07 21:22:45,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:22:45,598 INFO L93 Difference]: Finished difference Result 260046 states and 344728 transitions. [2018-11-07 21:22:45,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:22:45,598 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 595 [2018-11-07 21:22:45,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:22:45,981 INFO L225 Difference]: With dead ends: 260046 [2018-11-07 21:22:45,982 INFO L226 Difference]: Without dead ends: 130026 [2018-11-07 21:22:46,201 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 595 GetRequests, 589 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 21:22:46,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130026 states. [2018-11-07 21:22:49,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130026 to 130024. [2018-11-07 21:22:49,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130024 states. [2018-11-07 21:22:49,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130024 states to 130024 states and 172290 transitions. [2018-11-07 21:22:49,381 INFO L78 Accepts]: Start accepts. Automaton has 130024 states and 172290 transitions. Word has length 595 [2018-11-07 21:22:49,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:22:49,381 INFO L480 AbstractCegarLoop]: Abstraction has 130024 states and 172290 transitions. [2018-11-07 21:22:49,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 21:22:49,382 INFO L276 IsEmpty]: Start isEmpty. Operand 130024 states and 172290 transitions. [2018-11-07 21:22:49,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2018-11-07 21:22:49,422 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:22:49,423 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:22:49,423 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:22:49,423 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:22:49,424 INFO L82 PathProgramCache]: Analyzing trace with hash 921586967, now seen corresponding path program 1 times [2018-11-07 21:22:49,424 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:22:49,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:22:49,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:22:49,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:22:49,425 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:22:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:22:51,006 WARN L179 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-11-07 21:22:51,449 WARN L179 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-11-07 21:22:55,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 257 proven. 810 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 21:22:55,607 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:22:55,607 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:22:55,608 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 836 with the following transitions: [2018-11-07 21:22:55,608 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5594], [5602], [5610], [5618], [5626], [5634], [5642], [5650], [5658], [5662], [5664], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5877], [5878], [5882], [5886], [5890], [5894], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5977], [5981], [5985], [5996], [6000], [6004], [6008], [6012], [6016], [6020], [6024], [6028], [6032], [6036], [6040], [6051], [6055], [6059], [6063], [6067], [6071], [6075], [6079], [6083], [6087], [6091], [6102], [6106], [6110], [6121], [6125], [6129], [6140], [6144], [6148], [6152], [6156], [6160], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6251], [6255], [6259], [6263], [6267], [6278], [6282], [6286], [6290], [6294], [6298], [6302], [6306], [6310], [6314], [6325], [6329], [6333], [6344], [6348], [6352], [6356], [6360], [6371], [6375], [6379], [6383], [6387], [6391], [6402], [6413], [6417], [6420], [6421], [6425], [6429], [6432], [6437], [6439], [6440], [6444], [6455], [6459], [6463], [6467], [6471], [6475], [6486], [6490], [6494], [6498], [6502], [6506], [6510], [6514], [6525], [6529], [6533], [6537], [6541], [6545], [6549], [6553], [6557], [6560], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 21:22:55,621 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:22:55,621 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:22:55,805 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:22:56,256 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:22:56,257 INFO L272 AbstractInterpreter]: Visited 250 different actions 493 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 21:22:56,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:22:56,286 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... [2018-11-07 21:23:07,328 INFO L227 lantSequenceWeakener]: Weakened 477 states. On average, predicates are now at 75.31% of their original sizes. [2018-11-07 21:23:07,328 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:23:07,338 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 21:23:07,342 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 21:23:07,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:23:07 BoogieIcfgContainer [2018-11-07 21:23:07,343 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 21:23:07,343 INFO L168 Benchmark]: Toolchain (without parser) took 210372.09 ms. Allocated memory was 1.5 GB in the beginning and 5.3 GB in the end (delta: 3.7 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-07 21:23:07,345 INFO L168 Benchmark]: CDTParser took 0.23 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 21:23:07,345 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3501.43 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 382.2 MB). Peak memory consumption was 382.2 MB. Max. memory is 7.1 GB. [2018-11-07 21:23:07,346 INFO L168 Benchmark]: Boogie Procedure Inliner took 653.30 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 858.8 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. [2018-11-07 21:23:07,347 INFO L168 Benchmark]: Boogie Preprocessor took 558.69 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 53.3 MB). Peak memory consumption was 53.3 MB. Max. memory is 7.1 GB. [2018-11-07 21:23:07,348 INFO L168 Benchmark]: RCFGBuilder took 19233.88 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 169.9 MB). Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 479.4 MB). Peak memory consumption was 686.4 MB. Max. memory is 7.1 GB. [2018-11-07 21:23:07,349 INFO L168 Benchmark]: TraceAbstraction took 186418.54 ms. Allocated memory was 2.6 GB in the beginning and 5.3 GB in the end (delta: 2.7 GB). Free memory was 1.8 GB in the beginning and 3.4 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-11-07 21:23:07,354 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 3501.43 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 382.2 MB). Peak memory consumption was 382.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 653.30 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 858.8 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 558.69 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 53.3 MB). Peak memory consumption was 53.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 19233.88 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 169.9 MB). Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 479.4 MB). Peak memory consumption was 686.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 186418.54 ms. Allocated memory was 2.6 GB in the beginning and 5.3 GB in the end (delta: 2.7 GB). Free memory was 1.8 GB in the beginning and 3.4 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 196]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 196). Cancelled while BasicCegarLoop was analyzing trace of length 836 with TraceHistMax 5,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 3 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 186.3s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 153.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7352 SDtfs, 32987 SDslu, 4342 SDs, 0 SdLazy, 54919 SolverSat, 13455 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 100.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 644 GetRequests, 605 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130026occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9987620496156303 AbsIntWeakeningRatio, 0.05322128851540616 AbsIntAvgWeakeningVarsNumRemoved, 10.27310924369748 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 2638 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1632 NumberOfCodeBlocks, 1632 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1625 ConstructedInterpolants, 0 QuantifiedInterpolants, 1771377 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 792/890 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown