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/Problem12_label13_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:15:36,905 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:15:36,910 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:15:36,928 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:15:36,929 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:15:36,930 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:15:36,931 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:15:36,933 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:15:36,934 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:15:36,935 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:15:36,936 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:15:36,937 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:15:36,938 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:15:36,939 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:15:36,940 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:15:36,943 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:15:36,944 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:15:36,949 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:15:36,951 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:15:36,952 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:15:36,956 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:15:36,957 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:15:36,961 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:15:36,961 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:15:36,961 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:15:36,963 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:15:36,965 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:15:36,966 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:15:36,967 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:15:36,969 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:15:36,971 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:15:36,972 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:15:36,972 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:15:36,972 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:15:36,975 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:15:36,975 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:15:36,976 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 16:15:36,991 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:15:36,991 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:15:36,992 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:15:36,992 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:15:36,992 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:15:36,992 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:15:36,993 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:15:36,993 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:15:36,993 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:15:36,993 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:15:36,993 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:15:36,994 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:15:36,994 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:15:36,995 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:15:36,995 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:15:36,995 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:15:36,995 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:15:36,995 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:15:36,996 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:15:36,996 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:15:36,996 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:15:36,996 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:15:36,996 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:15:36,997 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:15:36,997 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:15:36,997 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:15:36,997 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:15:36,998 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:15:36,998 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:15:36,998 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:15:36,998 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:15:36,998 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:15:36,999 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:15:36,999 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:15:36,999 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:15:37,043 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:15:37,059 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:15:37,063 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:15:37,065 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:15:37,065 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:15:37,066 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label13_false-unreach-call.c [2018-11-12 16:15:37,133 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74ad0acc5/4d1a2e005c0543028909f6bd3c14ed19/FLAGc9ae1f180 [2018-11-12 16:15:37,874 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:15:37,875 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label13_false-unreach-call.c [2018-11-12 16:15:37,909 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74ad0acc5/4d1a2e005c0543028909f6bd3c14ed19/FLAGc9ae1f180 [2018-11-12 16:15:37,932 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74ad0acc5/4d1a2e005c0543028909f6bd3c14ed19 [2018-11-12 16:15:37,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:15:37,946 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:15:37,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:15:37,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:15:37,952 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:15:37,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:15:37" (1/1) ... [2018-11-12 16:15:37,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1505bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:37, skipping insertion in model container [2018-11-12 16:15:37,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:15:37" (1/1) ... [2018-11-12 16:15:37,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:15:38,135 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:15:39,435 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:15:39,440 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:15:40,047 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:15:40,083 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:15:40,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:40 WrapperNode [2018-11-12 16:15:40,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:15:40,085 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:15:40,085 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:15:40,085 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:15:40,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:40" (1/1) ... [2018-11-12 16:15:40,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:40" (1/1) ... [2018-11-12 16:15:40,438 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:15:40,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:15:40,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:15:40,439 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:15:40,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:40" (1/1) ... [2018-11-12 16:15:40,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:40" (1/1) ... [2018-11-12 16:15:40,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:40" (1/1) ... [2018-11-12 16:15:40,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:40" (1/1) ... [2018-11-12 16:15:40,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:40" (1/1) ... [2018-11-12 16:15:40,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:40" (1/1) ... [2018-11-12 16:15:40,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:40" (1/1) ... [2018-11-12 16:15:40,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:15:40,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:15:40,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:15:40,688 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:15:40,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:40" (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 [2018-11-12 16:15:40,759 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:15:40,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:15:40,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:15:40,760 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-12 16:15:40,760 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-12 16:15:40,760 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 16:15:40,761 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 16:15:40,761 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:15:40,761 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:15:40,761 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:15:40,761 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:15:40,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:15:40,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:15:40,763 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:15:40,763 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:15:49,253 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:15:49,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:15:49 BoogieIcfgContainer [2018-11-12 16:15:49,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:15:49,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:15:49,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:15:49,259 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:15:49,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:15:37" (1/3) ... [2018-11-12 16:15:49,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719753ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:15:49, skipping insertion in model container [2018-11-12 16:15:49,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:40" (2/3) ... [2018-11-12 16:15:49,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719753ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:15:49, skipping insertion in model container [2018-11-12 16:15:49,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:15:49" (3/3) ... [2018-11-12 16:15:49,263 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label13_false-unreach-call.c [2018-11-12 16:15:49,272 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:15:49,284 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:15:49,302 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:15:49,350 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:15:49,350 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:15:49,350 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:15:49,351 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:15:49,351 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:15:49,351 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:15:49,351 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:15:49,351 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:15:49,402 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-12 16:15:49,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-12 16:15:49,412 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:15:49,413 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] [2018-11-12 16:15:49,416 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:15:49,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:15:49,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1319252181, now seen corresponding path program 1 times [2018-11-12 16:15:49,425 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:15:49,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:15:49,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:15:49,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:15:49,478 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:15:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:15:49,903 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:15:50,011 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 16:15:50,014 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:15:50,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:15:50,014 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:15:50,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:15:50,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:15:50,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:15:50,189 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-12 16:15:58,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:15:58,451 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-12 16:15:58,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:15:58,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2018-11-12 16:15:58,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:15:58,492 INFO L225 Difference]: With dead ends: 2446 [2018-11-12 16:15:58,492 INFO L226 Difference]: Without dead ends: 1604 [2018-11-12 16:15:58,502 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:15:58,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-12 16:15:58,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-12 16:15:58,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-12 16:15:58,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3021 transitions. [2018-11-12 16:15:58,681 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3021 transitions. Word has length 35 [2018-11-12 16:15:58,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:15:58,682 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 3021 transitions. [2018-11-12 16:15:58,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:15:58,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3021 transitions. [2018-11-12 16:15:58,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-12 16:15:58,692 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:15:58,693 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:15:58,693 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:15:58,694 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:15:58,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1587812788, now seen corresponding path program 1 times [2018-11-12 16:15:58,695 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:15:58,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:15:58,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:15:58,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:15:58,700 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:15:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:15:59,192 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:15:59,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:15:59,193 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:15:59,193 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:15:59,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:15:59,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:15:59,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:15:59,196 INFO L87 Difference]: Start difference. First operand 1604 states and 3021 transitions. Second operand 6 states. [2018-11-12 16:16:13,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:16:13,947 INFO L93 Difference]: Finished difference Result 6330 states and 12128 transitions. [2018-11-12 16:16:13,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:16:13,957 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-11-12 16:16:13,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:16:13,989 INFO L225 Difference]: With dead ends: 6330 [2018-11-12 16:16:13,990 INFO L226 Difference]: Without dead ends: 4732 [2018-11-12 16:16:13,999 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:16:14,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2018-11-12 16:16:14,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 4700. [2018-11-12 16:16:14,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4700 states. [2018-11-12 16:16:14,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4700 states to 4700 states and 7674 transitions. [2018-11-12 16:16:14,147 INFO L78 Accepts]: Start accepts. Automaton has 4700 states and 7674 transitions. Word has length 113 [2018-11-12 16:16:14,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:16:14,147 INFO L480 AbstractCegarLoop]: Abstraction has 4700 states and 7674 transitions. [2018-11-12 16:16:14,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:16:14,148 INFO L276 IsEmpty]: Start isEmpty. Operand 4700 states and 7674 transitions. [2018-11-12 16:16:14,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-11-12 16:16:14,152 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:16:14,153 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:16:14,153 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:16:14,153 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:16:14,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1750714015, now seen corresponding path program 1 times [2018-11-12 16:16:14,153 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:16:14,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:16:14,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:16:14,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:16:14,155 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:16:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:16:14,352 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:16:14,352 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:16:14,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:16:14,353 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:16:14,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:16:14,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:16:14,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:16:14,354 INFO L87 Difference]: Start difference. First operand 4700 states and 7674 transitions. Second operand 5 states. [2018-11-12 16:16:21,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:16:21,578 INFO L93 Difference]: Finished difference Result 14303 states and 23676 transitions. [2018-11-12 16:16:21,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-12 16:16:21,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2018-11-12 16:16:21,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:16:21,737 INFO L225 Difference]: With dead ends: 14303 [2018-11-12 16:16:21,737 INFO L226 Difference]: Without dead ends: 9609 [2018-11-12 16:16:21,751 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:16:21,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9609 states. [2018-11-12 16:16:21,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9609 to 9527. [2018-11-12 16:16:21,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9527 states. [2018-11-12 16:16:22,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9527 states to 9527 states and 14359 transitions. [2018-11-12 16:16:22,021 INFO L78 Accepts]: Start accepts. Automaton has 9527 states and 14359 transitions. Word has length 116 [2018-11-12 16:16:22,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:16:22,022 INFO L480 AbstractCegarLoop]: Abstraction has 9527 states and 14359 transitions. [2018-11-12 16:16:22,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:16:22,022 INFO L276 IsEmpty]: Start isEmpty. Operand 9527 states and 14359 transitions. [2018-11-12 16:16:22,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-11-12 16:16:22,026 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:16:22,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:16:22,029 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:16:22,029 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:16:22,030 INFO L82 PathProgramCache]: Analyzing trace with hash 716449312, now seen corresponding path program 1 times [2018-11-12 16:16:22,030 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:16:22,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:16:22,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:16:22,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:16:22,031 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:16:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:16:22,276 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:16:22,276 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:16:22,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:16:22,276 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:16:22,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:16:22,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:16:22,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:16:22,278 INFO L87 Difference]: Start difference. First operand 9527 states and 14359 transitions. Second operand 6 states. [2018-11-12 16:16:38,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:16:38,007 INFO L93 Difference]: Finished difference Result 38548 states and 63646 transitions. [2018-11-12 16:16:38,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 16:16:38,008 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-11-12 16:16:38,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:16:38,185 INFO L225 Difference]: With dead ends: 38548 [2018-11-12 16:16:38,185 INFO L226 Difference]: Without dead ends: 29027 [2018-11-12 16:16:38,288 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 16:16:38,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29027 states. [2018-11-12 16:16:39,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29027 to 28824. [2018-11-12 16:16:39,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28824 states. [2018-11-12 16:16:39,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28824 states to 28824 states and 42272 transitions. [2018-11-12 16:16:39,133 INFO L78 Accepts]: Start accepts. Automaton has 28824 states and 42272 transitions. Word has length 139 [2018-11-12 16:16:39,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:16:39,134 INFO L480 AbstractCegarLoop]: Abstraction has 28824 states and 42272 transitions. [2018-11-12 16:16:39,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:16:39,134 INFO L276 IsEmpty]: Start isEmpty. Operand 28824 states and 42272 transitions. [2018-11-12 16:16:39,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-11-12 16:16:39,137 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:16:39,137 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:16:39,138 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:16:39,138 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:16:39,138 INFO L82 PathProgramCache]: Analyzing trace with hash 72543737, now seen corresponding path program 1 times [2018-11-12 16:16:39,138 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:16:39,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:16:39,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:16:39,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:16:39,143 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:16:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:16:39,460 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:16:39,899 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:16:39,900 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:16:39,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:16:39,900 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:16:39,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:16:39,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:16:39,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:16:39,901 INFO L87 Difference]: Start difference. First operand 28824 states and 42272 transitions. Second operand 6 states. [2018-11-12 16:16:50,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:16:50,719 INFO L93 Difference]: Finished difference Result 77165 states and 121238 transitions. [2018-11-12 16:16:50,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:16:50,721 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2018-11-12 16:16:50,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:16:50,944 INFO L225 Difference]: With dead ends: 77165 [2018-11-12 16:16:50,945 INFO L226 Difference]: Without dead ends: 48347 [2018-11-12 16:16:51,051 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:16:51,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48347 states. [2018-11-12 16:16:52,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48347 to 48115. [2018-11-12 16:16:52,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48115 states. [2018-11-12 16:16:52,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48115 states to 48115 states and 68182 transitions. [2018-11-12 16:16:52,808 INFO L78 Accepts]: Start accepts. Automaton has 48115 states and 68182 transitions. Word has length 160 [2018-11-12 16:16:52,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:16:52,808 INFO L480 AbstractCegarLoop]: Abstraction has 48115 states and 68182 transitions. [2018-11-12 16:16:52,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:16:52,808 INFO L276 IsEmpty]: Start isEmpty. Operand 48115 states and 68182 transitions. [2018-11-12 16:16:52,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-11-12 16:16:52,821 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:16:52,821 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 16:16:52,821 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:16:52,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:16:52,822 INFO L82 PathProgramCache]: Analyzing trace with hash -737174824, now seen corresponding path program 1 times [2018-11-12 16:16:52,822 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:16:52,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:16:52,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:16:52,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:16:52,823 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:16:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:16:53,127 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:16:53,523 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 56 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 16:16:53,523 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:16:53,524 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:16:53,526 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 231 with the following transitions: [2018-11-12 16:16:53,529 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2047], [2049], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2404], [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], [2536], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-12 16:16:53,627 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:16:53,628 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:16:54,287 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:16:54,290 INFO L272 AbstractInterpreter]: Visited 119 different actions 119 times. Never merged. Never widened. Performed 1204 root evaluator evaluations with a maximum evaluation depth of 6. Performed 1204 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 26 variables. [2018-11-12 16:16:54,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:16:54,337 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:16:54,988 INFO L227 lantSequenceWeakener]: Weakened 221 states. On average, predicates are now at 75.24% of their original sizes. [2018-11-12 16:16:54,988 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:16:55,253 INFO L415 sIntCurrentIteration]: We unified 229 AI predicates to 229 [2018-11-12 16:16:55,253 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:16:55,254 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:16:55,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-11-12 16:16:55,255 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:16:55,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-12 16:16:55,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-12 16:16:55,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:16:55,256 INFO L87 Difference]: Start difference. First operand 48115 states and 68182 transitions. Second operand 8 states. [2018-11-12 16:17:03,348 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:17:42,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:17:42,450 INFO L93 Difference]: Finished difference Result 96994 states and 137268 transitions. [2018-11-12 16:17:42,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 16:17:42,450 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 230 [2018-11-12 16:17:42,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:17:42,625 INFO L225 Difference]: With dead ends: 96994 [2018-11-12 16:17:42,626 INFO L226 Difference]: Without dead ends: 48885 [2018-11-12 16:17:42,739 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 231 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 16:17:42,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48885 states. [2018-11-12 16:17:43,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48885 to 48883. [2018-11-12 16:17:43,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48883 states. [2018-11-12 16:17:43,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48883 states to 48883 states and 68961 transitions. [2018-11-12 16:17:43,690 INFO L78 Accepts]: Start accepts. Automaton has 48883 states and 68961 transitions. Word has length 230 [2018-11-12 16:17:43,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:17:43,690 INFO L480 AbstractCegarLoop]: Abstraction has 48883 states and 68961 transitions. [2018-11-12 16:17:43,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-12 16:17:43,691 INFO L276 IsEmpty]: Start isEmpty. Operand 48883 states and 68961 transitions. [2018-11-12 16:17:43,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-11-12 16:17:43,697 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:17:43,697 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 16:17:43,697 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:17:43,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:17:43,698 INFO L82 PathProgramCache]: Analyzing trace with hash 281939484, now seen corresponding path program 1 times [2018-11-12 16:17:43,698 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:17:43,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:17:43,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:17:43,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:17:43,699 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:17:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:17:44,230 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:17:44,231 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:17:44,231 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:17:44,231 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2018-11-12 16:17:44,233 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2047], [2049], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [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], [2580], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-12 16:17:44,242 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:17:44,242 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:17:44,903 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:17:44,903 INFO L272 AbstractInterpreter]: Visited 133 different actions 262 times. Merged at 5 different actions 7 times. Never widened. Performed 4154 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4154 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 16:17:44,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:17:44,932 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:17:45,432 INFO L227 lantSequenceWeakener]: Weakened 233 states. On average, predicates are now at 75.28% of their original sizes. [2018-11-12 16:17:45,432 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:17:46,369 INFO L415 sIntCurrentIteration]: We unified 235 AI predicates to 235 [2018-11-12 16:17:46,369 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:17:46,370 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:17:46,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-12 16:17:46,370 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:17:46,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 16:17:46,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 16:17:46,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:17:46,372 INFO L87 Difference]: Start difference. First operand 48883 states and 68961 transitions. Second operand 11 states. [2018-11-12 16:17:52,976 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:18:47,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:18:47,525 INFO L93 Difference]: Finished difference Result 98534 states and 139010 transitions. [2018-11-12 16:18:47,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-12 16:18:47,525 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 236 [2018-11-12 16:18:47,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:18:47,763 INFO L225 Difference]: With dead ends: 98534 [2018-11-12 16:18:47,763 INFO L226 Difference]: Without dead ends: 50425 [2018-11-12 16:18:47,930 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 244 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2018-11-12 16:18:47,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50425 states. [2018-11-12 16:18:49,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50425 to 50422. [2018-11-12 16:18:49,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50422 states. [2018-11-12 16:18:49,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50422 states to 50422 states and 70515 transitions. [2018-11-12 16:18:49,321 INFO L78 Accepts]: Start accepts. Automaton has 50422 states and 70515 transitions. Word has length 236 [2018-11-12 16:18:49,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:18:49,322 INFO L480 AbstractCegarLoop]: Abstraction has 50422 states and 70515 transitions. [2018-11-12 16:18:49,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 16:18:49,322 INFO L276 IsEmpty]: Start isEmpty. Operand 50422 states and 70515 transitions. [2018-11-12 16:18:49,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-11-12 16:18:49,332 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:18:49,332 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:18:49,333 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:18:49,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:18:49,333 INFO L82 PathProgramCache]: Analyzing trace with hash 333639945, now seen corresponding path program 1 times [2018-11-12 16:18:49,333 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:18:49,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:18:49,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:18:49,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:18:49,335 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:18:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:18:49,664 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-11-12 16:18:49,664 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:18:49,664 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:18:49,665 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:18:49,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:18:49,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:18:49,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:18:49,666 INFO L87 Difference]: Start difference. First operand 50422 states and 70515 transitions. Second operand 4 states. [2018-11-12 16:19:00,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:19:00,240 INFO L93 Difference]: Finished difference Result 164286 states and 253608 transitions. [2018-11-12 16:19:00,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:19:00,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 285 [2018-11-12 16:19:00,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Received shutdown request... [2018-11-12 16:19:00,662 INFO L225 Difference]: With dead ends: 164286 [2018-11-12 16:19:00,662 INFO L226 Difference]: Without dead ends: 116177 [2018-11-12 16:19:00,868 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 16:19:00,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116177 states. [2018-11-12 16:19:00,961 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:19:00,965 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:19:00,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:19:00 BoogieIcfgContainer [2018-11-12 16:19:00,966 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:19:00,966 INFO L168 Benchmark]: Toolchain (without parser) took 203021.64 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 298.7 MB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. [2018-11-12 16:19:00,968 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:19:00,968 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2136.58 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-11-12 16:19:00,969 INFO L168 Benchmark]: Boogie Procedure Inliner took 353.83 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 781.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.6 MB. Max. memory is 7.1 GB. [2018-11-12 16:19:00,970 INFO L168 Benchmark]: Boogie Preprocessor took 248.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2018-11-12 16:19:00,971 INFO L168 Benchmark]: RCFGBuilder took 8567.04 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 650.2 MB). Peak memory consumption was 650.2 MB. Max. memory is 7.1 GB. [2018-11-12 16:19:00,972 INFO L168 Benchmark]: TraceAbstraction took 191710.46 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 1.6 GB in the beginning and 1.1 GB in the end (delta: 456.7 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-11-12 16:19:00,979 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 2136.58 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 353.83 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 781.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 248.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8567.04 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 650.2 MB). Peak memory consumption was 650.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 191710.46 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 1.6 GB in the beginning and 1.1 GB in the end (delta: 456.7 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 96). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 191.6s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 178.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2906 SDtfs, 20933 SDslu, 1825 SDs, 0 SdLazy, 44605 SolverSat, 7721 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 95.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 524 GetRequests, 465 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50422occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9974485342555991 AbsIntWeakeningRatio, 0.11637931034482758 AbsIntAvgWeakeningVarsNumRemoved, 21.974137931034484 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 5.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 554 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 1314 NumberOfCodeBlocks, 1314 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1306 ConstructedInterpolants, 0 QuantifiedInterpolants, 830995 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 463/541 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown