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/Problem18_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:37:36,015 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:37:36,017 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:37:36,032 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:37:36,032 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:37:36,033 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:37:36,034 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:37:36,036 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:37:36,038 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:37:36,038 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:37:36,039 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:37:36,040 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:37:36,041 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:37:36,042 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:37:36,043 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:37:36,043 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:37:36,044 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:37:36,046 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:37:36,048 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:37:36,050 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:37:36,051 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:37:36,052 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:37:36,055 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:37:36,055 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:37:36,056 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:37:36,057 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:37:36,058 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:37:36,058 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:37:36,062 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:37:36,063 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:37:36,063 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:37:36,066 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:37:36,066 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:37:36,066 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:37:36,067 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:37:36,068 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:37:36,068 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 19:37:36,083 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:37:36,084 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:37:36,085 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:37:36,085 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:37:36,085 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:37:36,085 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:37:36,085 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:37:36,086 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:37:36,086 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:37:36,086 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:37:36,086 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:37:36,086 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:37:36,087 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:37:36,087 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:37:36,087 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:37:36,088 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:37:36,088 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:37:36,088 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:37:36,088 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:37:36,088 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:37:36,089 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:37:36,089 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:37:36,089 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:37:36,089 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:37:36,089 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:37:36,089 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:37:36,090 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:37:36,090 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:37:36,090 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:37:36,090 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:37:36,090 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:37:36,091 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:37:36,091 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:37:36,091 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:37:36,091 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:37:36,144 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:37:36,160 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:37:36,165 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:37:36,167 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:37:36,167 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:37:36,168 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label05_true-unreach-call.c [2018-11-12 19:37:36,233 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ca82a441/e23b6a082a2e4faabcecda360aadd14d/FLAG08b247bed [2018-11-12 19:37:37,011 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:37:37,012 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label05_true-unreach-call.c [2018-11-12 19:37:37,047 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ca82a441/e23b6a082a2e4faabcecda360aadd14d/FLAG08b247bed [2018-11-12 19:37:37,071 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ca82a441/e23b6a082a2e4faabcecda360aadd14d [2018-11-12 19:37:37,083 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:37:37,086 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:37:37,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:37:37,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:37:37,095 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:37:37,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:37:37" (1/1) ... [2018-11-12 19:37:37,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ce9ed0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:37, skipping insertion in model container [2018-11-12 19:37:37,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:37:37" (1/1) ... [2018-11-12 19:37:37,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:37:37,247 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:37:38,320 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:37:38,325 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:37:38,741 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:37:38,773 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:37:38,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:38 WrapperNode [2018-11-12 19:37:38,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:37:38,775 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:37:38,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:37:38,775 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:37:38,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:38" (1/1) ... [2018-11-12 19:37:39,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:38" (1/1) ... [2018-11-12 19:37:39,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:37:39,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:37:39,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:37:39,048 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:37:39,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:38" (1/1) ... [2018-11-12 19:37:39,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:38" (1/1) ... [2018-11-12 19:37:39,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:38" (1/1) ... [2018-11-12 19:37:39,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:38" (1/1) ... [2018-11-12 19:37:39,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:38" (1/1) ... [2018-11-12 19:37:39,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:38" (1/1) ... [2018-11-12 19:37:39,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:38" (1/1) ... [2018-11-12 19:37:39,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:37:39,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:37:39,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:37:39,230 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:37:39,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:37:39,301 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:37:39,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:37:39,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:37:39,302 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 19:37:39,302 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 19:37:39,302 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:37:39,302 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:37:39,302 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:37:39,303 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:37:39,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:37:39,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:37:39,303 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:37:39,303 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:37:47,123 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:37:47,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:37:47 BoogieIcfgContainer [2018-11-12 19:37:47,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:37:47,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:37:47,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:37:47,128 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:37:47,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:37:37" (1/3) ... [2018-11-12 19:37:47,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71be13d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:37:47, skipping insertion in model container [2018-11-12 19:37:47,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:38" (2/3) ... [2018-11-12 19:37:47,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71be13d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:37:47, skipping insertion in model container [2018-11-12 19:37:47,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:37:47" (3/3) ... [2018-11-12 19:37:47,132 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label05_true-unreach-call.c [2018-11-12 19:37:47,141 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:37:47,151 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:37:47,167 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:37:47,213 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:37:47,214 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:37:47,214 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:37:47,214 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:37:47,214 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:37:47,214 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:37:47,215 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:37:47,215 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:37:47,256 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-12 19:37:47,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-12 19:37:47,265 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:37:47,266 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] [2018-11-12 19:37:47,269 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:37:47,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:37:47,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1029134209, now seen corresponding path program 1 times [2018-11-12 19:37:47,278 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:37:47,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:37:47,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:37:47,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:37:47,330 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:37:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:37:47,773 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:37:47,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:37:47,886 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:37:47,886 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 19:37:47,886 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:37:47,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:37:47,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:37:47,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:37:47,911 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-12 19:37:54,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:37:54,261 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-12 19:37:54,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:37:54,266 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2018-11-12 19:37:54,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:37:54,312 INFO L225 Difference]: With dead ends: 2251 [2018-11-12 19:37:54,313 INFO L226 Difference]: Without dead ends: 1474 [2018-11-12 19:37:54,330 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 [2018-11-12 19:37:54,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-12 19:37:54,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-12 19:37:54,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-12 19:37:54,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2715 transitions. [2018-11-12 19:37:54,494 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2715 transitions. Word has length 45 [2018-11-12 19:37:54,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:37:54,495 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2715 transitions. [2018-11-12 19:37:54,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:37:54,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2715 transitions. [2018-11-12 19:37:54,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-11-12 19:37:54,506 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:37:54,509 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:37:54,510 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:37:54,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:37:54,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1760973291, now seen corresponding path program 1 times [2018-11-12 19:37:54,510 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:37:54,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:37:54,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:37:54,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:37:54,512 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:37:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:37:54,865 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:37:55,070 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:37:55,071 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:37:55,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 19:37:55,071 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:37:55,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 19:37:55,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 19:37:55,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 19:37:55,076 INFO L87 Difference]: Start difference. First operand 1474 states and 2715 transitions. Second operand 5 states. [2018-11-12 19:38:03,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:38:03,658 INFO L93 Difference]: Finished difference Result 4419 states and 8226 transitions. [2018-11-12 19:38:03,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:38:03,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2018-11-12 19:38:03,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:38:03,680 INFO L225 Difference]: With dead ends: 4419 [2018-11-12 19:38:03,681 INFO L226 Difference]: Without dead ends: 2951 [2018-11-12 19:38:03,686 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:38:03,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-11-12 19:38:03,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-11-12 19:38:03,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-11-12 19:38:03,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4901 transitions. [2018-11-12 19:38:03,774 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4901 transitions. Word has length 116 [2018-11-12 19:38:03,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:38:03,774 INFO L480 AbstractCegarLoop]: Abstraction has 2925 states and 4901 transitions. [2018-11-12 19:38:03,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 19:38:03,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4901 transitions. [2018-11-12 19:38:03,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-11-12 19:38:03,779 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:38:03,779 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:38:03,780 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:38:03,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:38:03,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1097208028, now seen corresponding path program 1 times [2018-11-12 19:38:03,780 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:38:03,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:03,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:38:03,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:03,782 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:38:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:38:03,942 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:38:03,943 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:38:03,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:38:03,943 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:38:03,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:38:03,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:38:03,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:38:03,945 INFO L87 Difference]: Start difference. First operand 2925 states and 4901 transitions. Second operand 6 states. [2018-11-12 19:38:15,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:38:15,317 INFO L93 Difference]: Finished difference Result 11199 states and 19628 transitions. [2018-11-12 19:38:15,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 19:38:15,319 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-11-12 19:38:15,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:38:15,394 INFO L225 Difference]: With dead ends: 11199 [2018-11-12 19:38:15,394 INFO L226 Difference]: Without dead ends: 8280 [2018-11-12 19:38:15,428 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 19:38:15,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8280 states. [2018-11-12 19:38:15,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8280 to 8210. [2018-11-12 19:38:15,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8210 states. [2018-11-12 19:38:15,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8210 states to 8210 states and 12156 transitions. [2018-11-12 19:38:15,741 INFO L78 Accepts]: Start accepts. Automaton has 8210 states and 12156 transitions. Word has length 121 [2018-11-12 19:38:15,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:38:15,744 INFO L480 AbstractCegarLoop]: Abstraction has 8210 states and 12156 transitions. [2018-11-12 19:38:15,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:38:15,744 INFO L276 IsEmpty]: Start isEmpty. Operand 8210 states and 12156 transitions. [2018-11-12 19:38:15,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-12 19:38:15,750 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:38:15,755 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:38:15,755 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:38:15,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:38:15,756 INFO L82 PathProgramCache]: Analyzing trace with hash -821130008, now seen corresponding path program 1 times [2018-11-12 19:38:15,756 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:38:15,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:15,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:38:15,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:15,757 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:38:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:38:15,995 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:38:15,996 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:38:15,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:38:15,996 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:38:15,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:38:15,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:38:15,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:38:15,997 INFO L87 Difference]: Start difference. First operand 8210 states and 12156 transitions. Second operand 4 states. [2018-11-12 19:38:23,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:38:23,268 INFO L93 Difference]: Finished difference Result 29381 states and 47046 transitions. [2018-11-12 19:38:23,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:38:23,270 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2018-11-12 19:38:23,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:38:23,420 INFO L225 Difference]: With dead ends: 29381 [2018-11-12 19:38:23,420 INFO L226 Difference]: Without dead ends: 21177 [2018-11-12 19:38:23,494 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:38:23,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21177 states. [2018-11-12 19:38:24,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21177 to 21177. [2018-11-12 19:38:24,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21177 states. [2018-11-12 19:38:24,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21177 states to 21177 states and 31631 transitions. [2018-11-12 19:38:24,098 INFO L78 Accepts]: Start accepts. Automaton has 21177 states and 31631 transitions. Word has length 143 [2018-11-12 19:38:24,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:38:24,099 INFO L480 AbstractCegarLoop]: Abstraction has 21177 states and 31631 transitions. [2018-11-12 19:38:24,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:38:24,099 INFO L276 IsEmpty]: Start isEmpty. Operand 21177 states and 31631 transitions. [2018-11-12 19:38:24,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-11-12 19:38:24,115 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:38:24,116 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:38:24,116 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:38:24,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:38:24,117 INFO L82 PathProgramCache]: Analyzing trace with hash -272389743, now seen corresponding path program 1 times [2018-11-12 19:38:24,117 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:38:24,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:24,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:38:24,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:24,118 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:38:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:38:24,374 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:38:24,626 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 76 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:38:24,627 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:38:24,627 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:38:24,628 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 242 with the following transitions: [2018-11-12 19:38:24,633 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1883], [1885], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2340], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-12 19:38:24,693 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:38:24,693 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:38:25,493 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:38:25,496 INFO L272 AbstractInterpreter]: Visited 131 different actions 131 times. Never merged. Never widened. Performed 1201 root evaluator evaluations with a maximum evaluation depth of 6. Performed 1201 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 19:38:25,540 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:38:25,541 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:38:26,370 INFO L227 lantSequenceWeakener]: Weakened 232 states. On average, predicates are now at 77.79% of their original sizes. [2018-11-12 19:38:26,370 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:38:26,722 INFO L415 sIntCurrentIteration]: We unified 240 AI predicates to 240 [2018-11-12 19:38:26,722 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:38:26,723 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:38:26,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-11-12 19:38:26,727 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:38:26,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 19:38:26,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 19:38:26,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 19:38:26,728 INFO L87 Difference]: Start difference. First operand 21177 states and 31631 transitions. Second operand 7 states. [2018-11-12 19:38:34,503 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:38:54,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:38:54,850 INFO L93 Difference]: Finished difference Result 43053 states and 64107 transitions. [2018-11-12 19:38:54,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:38:54,850 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2018-11-12 19:38:54,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:38:54,964 INFO L225 Difference]: With dead ends: 43053 [2018-11-12 19:38:54,965 INFO L226 Difference]: Without dead ends: 21882 [2018-11-12 19:38:55,039 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 241 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:38:55,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21882 states. [2018-11-12 19:38:55,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21882 to 21880. [2018-11-12 19:38:55,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21880 states. [2018-11-12 19:38:55,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21880 states to 21880 states and 32346 transitions. [2018-11-12 19:38:55,571 INFO L78 Accepts]: Start accepts. Automaton has 21880 states and 32346 transitions. Word has length 241 [2018-11-12 19:38:55,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:38:55,573 INFO L480 AbstractCegarLoop]: Abstraction has 21880 states and 32346 transitions. [2018-11-12 19:38:55,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 19:38:55,573 INFO L276 IsEmpty]: Start isEmpty. Operand 21880 states and 32346 transitions. [2018-11-12 19:38:55,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2018-11-12 19:38:55,593 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:38:55,593 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:38:55,594 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:38:55,594 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:38:55,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1210138575, now seen corresponding path program 1 times [2018-11-12 19:38:55,595 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:38:55,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:55,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:38:55,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:55,596 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:38:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:38:56,155 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:38:56,345 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:38:56,582 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:38:57,369 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 173 proven. 202 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:38:57,370 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:38:57,370 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:38:57,370 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 429 with the following transitions: [2018-11-12 19:38:57,371 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1883], [1885], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2340], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-12 19:38:57,380 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:38:57,380 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:38:58,036 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:38:58,036 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Performed 4329 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4329 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:38:58,072 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:38:58,073 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:38:59,177 INFO L227 lantSequenceWeakener]: Weakened 117 states. On average, predicates are now at 77.31% of their original sizes. [2018-11-12 19:38:59,177 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:39:01,881 INFO L415 sIntCurrentIteration]: We unified 427 AI predicates to 427 [2018-11-12 19:39:01,881 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:39:01,881 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:39:01,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2018-11-12 19:39:01,882 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:39:01,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 19:39:01,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 19:39:01,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-11-12 19:39:01,883 INFO L87 Difference]: Start difference. First operand 21880 states and 32346 transitions. Second operand 16 states. [2018-11-12 19:39:30,162 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:40:20,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:40:20,792 INFO L93 Difference]: Finished difference Result 45536 states and 66669 transitions. [2018-11-12 19:40:20,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-12 19:40:20,792 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 428 [2018-11-12 19:40:20,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:40:20,888 INFO L225 Difference]: With dead ends: 45536 [2018-11-12 19:40:20,888 INFO L226 Difference]: Without dead ends: 22171 [2018-11-12 19:40:21,028 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 435 GetRequests, 397 SyntacticMatches, 16 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2018-11-12 19:40:21,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22171 states. [2018-11-12 19:40:21,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22171 to 21880. [2018-11-12 19:40:21,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21880 states. [2018-11-12 19:40:21,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21880 states to 21880 states and 32338 transitions. [2018-11-12 19:40:21,788 INFO L78 Accepts]: Start accepts. Automaton has 21880 states and 32338 transitions. Word has length 428 [2018-11-12 19:40:21,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:40:21,791 INFO L480 AbstractCegarLoop]: Abstraction has 21880 states and 32338 transitions. [2018-11-12 19:40:21,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 19:40:21,791 INFO L276 IsEmpty]: Start isEmpty. Operand 21880 states and 32338 transitions. [2018-11-12 19:40:21,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2018-11-12 19:40:21,832 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:40:21,832 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:40:21,833 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:40:21,833 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:40:21,833 INFO L82 PathProgramCache]: Analyzing trace with hash 810616712, now seen corresponding path program 1 times [2018-11-12 19:40:21,833 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:40:21,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:40:21,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:40:21,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:40:21,835 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:40:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:40:22,582 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:40:23,329 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 120 proven. 188 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-12 19:40:23,330 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:40:23,330 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:40:23,330 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 770 with the following transitions: [2018-11-12 19:40:23,331 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1883], [1885], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2340], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-12 19:40:23,350 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:40:23,350 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:40:24,825 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:40:24,825 INFO L272 AbstractInterpreter]: Visited 537 different actions 1068 times. Merged at 5 different actions 5 times. Never widened. Performed 13843 root evaluator evaluations with a maximum evaluation depth of 6. Performed 13843 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:40:24,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:40:24,837 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:40:25,924 INFO L227 lantSequenceWeakener]: Weakened 460 states. On average, predicates are now at 77.68% of their original sizes. [2018-11-12 19:40:25,925 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:40:26,632 INFO L415 sIntCurrentIteration]: We unified 768 AI predicates to 768 [2018-11-12 19:40:26,633 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:40:26,633 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:40:26,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [31] imperfect sequences [5] total 34 [2018-11-12 19:40:26,633 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:40:26,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-12 19:40:26,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-12 19:40:26,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=810, Unknown=0, NotChecked=0, Total=930 [2018-11-12 19:40:26,636 INFO L87 Difference]: Start difference. First operand 21880 states and 32338 transitions. Second operand 31 states. [2018-11-12 19:41:01,558 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-12 19:41:06,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-12 19:41:06,246 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:41:06,252 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:41:06,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:41:06 BoogieIcfgContainer [2018-11-12 19:41:06,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:41:06,253 INFO L168 Benchmark]: Toolchain (without parser) took 209168.31 ms. Allocated memory was 1.5 GB in the beginning and 5.5 GB in the end (delta: 4.0 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-12 19:41:06,254 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:41:06,255 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1687.37 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-12 19:41:06,255 INFO L168 Benchmark]: Boogie Procedure Inliner took 272.57 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 715.1 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -906.9 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. [2018-11-12 19:41:06,257 INFO L168 Benchmark]: Boogie Preprocessor took 181.37 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2018-11-12 19:41:06,257 INFO L168 Benchmark]: RCFGBuilder took 7894.25 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 500.4 MB). Peak memory consumption was 500.4 MB. Max. memory is 7.1 GB. [2018-11-12 19:41:06,258 INFO L168 Benchmark]: TraceAbstraction took 199127.33 ms. Allocated memory was 2.2 GB in the beginning and 5.5 GB in the end (delta: 3.3 GB). Free memory was 1.6 GB in the beginning and 3.1 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-11-12 19:41:06,263 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1687.37 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 272.57 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 715.1 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -906.9 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 181.37 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7894.25 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 500.4 MB). Peak memory consumption was 500.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 199127.33 ms. Allocated memory was 2.2 GB in the beginning and 5.5 GB in the end (delta: 3.3 GB). Free memory was 1.6 GB in the beginning and 3.1 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 123]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 123). Cancelled while BasicCegarLoop was constructing difference of abstraction (21880states) and FLOYD_HOARE automaton (currently 34 states, 31 states before enhancement),while ReachableStatesComputation was computing reachable states (10448 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 199.0s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 181.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3111 SDtfs, 19460 SDslu, 1180 SDs, 0 SdLazy, 40595 SolverSat, 5364 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 79.3s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1503 GetRequests, 1381 SyntacticMatches, 19 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21880occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.1s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9979611576627182 AbsIntWeakeningRatio, 0.06829268292682927 AbsIntAvgWeakeningVarsNumRemoved, 16.770731707317072 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.4s AutomataMinimizationTime, 6 MinimizatonAttempts, 389 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 1863 NumberOfCodeBlocks, 1863 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1856 ConstructedInterpolants, 0 QuantifiedInterpolants, 3020875 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 565/1020 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown