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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label31_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:48:13,055 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:48:13,057 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:48:13,070 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:48:13,070 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:48:13,071 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:48:13,073 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:48:13,075 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:48:13,076 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:48:13,077 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:48:13,078 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:48:13,078 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:48:13,079 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:48:13,080 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:48:13,081 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:48:13,082 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:48:13,083 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:48:13,085 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:48:13,087 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:48:13,089 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:48:13,090 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:48:13,091 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:48:13,093 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 00:48:13,094 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 00:48:13,094 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 00:48:13,095 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 00:48:13,096 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 00:48:13,097 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 00:48:13,097 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 00:48:13,099 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 00:48:13,099 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 00:48:13,100 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 00:48:13,100 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 00:48:13,100 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 00:48:13,101 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 00:48:13,102 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 00:48:13,102 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:48:13,120 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:48:13,121 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:48:13,121 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:48:13,122 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:48:13,122 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:48:13,123 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:48:13,123 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:48:13,123 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:48:13,123 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:48:13,123 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:48:13,124 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:48:13,124 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:48:13,125 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:48:13,126 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:48:13,126 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:48:13,126 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:48:13,126 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:48:13,126 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:48:13,127 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:48:13,127 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:48:13,127 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:48:13,127 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:48:13,127 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:48:13,129 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:48:13,129 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:48:13,129 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:48:13,129 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:48:13,130 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:48:13,130 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:48:13,130 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:48:13,130 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:48:13,131 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:48:13,131 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:48:13,131 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:48:13,201 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:48:13,217 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:48:13,221 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:48:13,223 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:48:13,224 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:48:13,225 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label31_false-unreach-call.c [2018-11-07 00:48:13,286 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7308708ce/0a686f2affd64b79b4720e9da6c6ab74/FLAG4b8526725 [2018-11-07 00:48:14,053 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:48:14,054 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label31_false-unreach-call.c [2018-11-07 00:48:14,080 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7308708ce/0a686f2affd64b79b4720e9da6c6ab74/FLAG4b8526725 [2018-11-07 00:48:14,097 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7308708ce/0a686f2affd64b79b4720e9da6c6ab74 [2018-11-07 00:48:14,109 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:48:14,111 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:48:14,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:48:14,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:48:14,117 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:48:14,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:48:14" (1/1) ... [2018-11-07 00:48:14,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f9b0fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:14, skipping insertion in model container [2018-11-07 00:48:14,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:48:14" (1/1) ... [2018-11-07 00:48:14,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:48:14,281 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:48:15,355 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:48:15,360 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:48:15,826 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:48:15,858 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:48:15,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:15 WrapperNode [2018-11-07 00:48:15,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:48:15,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:48:15,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:48:15,861 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:48:15,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:15" (1/1) ... [2018-11-07 00:48:16,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:15" (1/1) ... [2018-11-07 00:48:16,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:48:16,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:48:16,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:48:16,137 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:48:16,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:15" (1/1) ... [2018-11-07 00:48:16,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:15" (1/1) ... [2018-11-07 00:48:16,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:15" (1/1) ... [2018-11-07 00:48:16,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:15" (1/1) ... [2018-11-07 00:48:16,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:15" (1/1) ... [2018-11-07 00:48:16,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:15" (1/1) ... [2018-11-07 00:48:16,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:15" (1/1) ... [2018-11-07 00:48:16,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:48:16,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:48:16,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:48:16,323 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:48:16,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:48:16,393 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:48:16,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:48:16,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:48:16,394 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 00:48:16,394 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 00:48:16,394 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:48:16,394 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:48:16,395 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:48:16,395 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:48:16,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:48:16,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:48:16,395 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:48:16,396 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:48:25,805 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:48:25,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:48:25 BoogieIcfgContainer [2018-11-07 00:48:25,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:48:25,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:48:25,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:48:25,811 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:48:25,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:48:14" (1/3) ... [2018-11-07 00:48:25,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b1c92c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:48:25, skipping insertion in model container [2018-11-07 00:48:25,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:15" (2/3) ... [2018-11-07 00:48:25,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b1c92c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:48:25, skipping insertion in model container [2018-11-07 00:48:25,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:48:25" (3/3) ... [2018-11-07 00:48:25,815 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label31_false-unreach-call.c [2018-11-07 00:48:25,827 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:48:25,837 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:48:25,857 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:48:25,906 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:48:25,906 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:48:25,907 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:48:25,907 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:48:25,907 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:48:25,907 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:48:25,907 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:48:25,907 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:48:25,950 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 00:48:25,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-07 00:48:25,957 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:48:25,959 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] [2018-11-07 00:48:25,961 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:48:25,968 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:48:25,968 INFO L82 PathProgramCache]: Analyzing trace with hash 609614244, now seen corresponding path program 1 times [2018-11-07 00:48:25,971 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:48:26,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:48:26,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:48:26,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:48:26,024 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:48:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:48:26,413 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:48:26,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:48:26,512 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:48:26,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:48:26,512 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:48:26,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:48:26,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:48:26,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:48:26,540 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 00:48:33,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:48:33,442 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 00:48:33,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:48:33,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-11-07 00:48:33,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:48:33,488 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 00:48:33,488 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 00:48:33,502 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:48:33,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 00:48:33,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 00:48:33,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 00:48:33,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-11-07 00:48:33,704 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 22 [2018-11-07 00:48:33,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:48:33,704 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-11-07 00:48:33,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:48:33,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-11-07 00:48:33,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-11-07 00:48:33,714 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:48:33,714 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:48:33,715 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:48:33,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:48:33,715 INFO L82 PathProgramCache]: Analyzing trace with hash 2062892298, now seen corresponding path program 1 times [2018-11-07 00:48:33,716 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:48:33,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:48:33,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:48:33,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:48:33,720 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:48:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:48:34,152 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:48:34,510 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:48:34,510 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:48:34,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:48:34,511 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:48:34,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:48:34,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:48:34,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:48:34,516 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-11-07 00:48:46,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:48:46,201 INFO L93 Difference]: Finished difference Result 5777 states and 11168 transitions. [2018-11-07 00:48:46,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:48:46,202 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2018-11-07 00:48:46,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:48:46,231 INFO L225 Difference]: With dead ends: 5777 [2018-11-07 00:48:46,231 INFO L226 Difference]: Without dead ends: 4309 [2018-11-07 00:48:46,241 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:48:46,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4309 states. [2018-11-07 00:48:46,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4309 to 4283. [2018-11-07 00:48:46,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4283 states. [2018-11-07 00:48:46,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4283 states to 4283 states and 7016 transitions. [2018-11-07 00:48:46,371 INFO L78 Accepts]: Start accepts. Automaton has 4283 states and 7016 transitions. Word has length 96 [2018-11-07 00:48:46,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:48:46,371 INFO L480 AbstractCegarLoop]: Abstraction has 4283 states and 7016 transitions. [2018-11-07 00:48:46,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:48:46,372 INFO L276 IsEmpty]: Start isEmpty. Operand 4283 states and 7016 transitions. [2018-11-07 00:48:46,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-11-07 00:48:46,389 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:48:46,389 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:48:46,389 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:48:46,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:48:46,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1199088567, now seen corresponding path program 1 times [2018-11-07 00:48:46,393 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:48:46,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:48:46,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:48:46,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:48:46,396 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:48:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:48:46,908 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:48:46,909 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:48:46,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:48:46,909 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:48:46,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:48:46,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:48:46,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:48:46,911 INFO L87 Difference]: Start difference. First operand 4283 states and 7016 transitions. Second operand 6 states. [2018-11-07 00:48:52,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:48:52,517 INFO L93 Difference]: Finished difference Result 10060 states and 16785 transitions. [2018-11-07 00:48:52,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:48:52,522 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 185 [2018-11-07 00:48:52,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:48:52,563 INFO L225 Difference]: With dead ends: 10060 [2018-11-07 00:48:52,564 INFO L226 Difference]: Without dead ends: 5783 [2018-11-07 00:48:52,579 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:48:52,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5783 states. [2018-11-07 00:48:52,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5783 to 5754. [2018-11-07 00:48:52,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5754 states. [2018-11-07 00:48:52,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5754 states to 5754 states and 9275 transitions. [2018-11-07 00:48:52,747 INFO L78 Accepts]: Start accepts. Automaton has 5754 states and 9275 transitions. Word has length 185 [2018-11-07 00:48:52,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:48:52,748 INFO L480 AbstractCegarLoop]: Abstraction has 5754 states and 9275 transitions. [2018-11-07 00:48:52,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:48:52,748 INFO L276 IsEmpty]: Start isEmpty. Operand 5754 states and 9275 transitions. [2018-11-07 00:48:52,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-11-07 00:48:52,753 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:48:52,754 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:48:52,754 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:48:52,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:48:52,755 INFO L82 PathProgramCache]: Analyzing trace with hash 2119898916, now seen corresponding path program 1 times [2018-11-07 00:48:52,755 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:48:52,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:48:52,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:48:52,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:48:52,756 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:48:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:48:52,990 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 30 proven. 90 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:48:52,990 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:48:52,990 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:48:52,991 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 229 with the following transitions: [2018-11-07 00:48:52,993 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1699], [1701], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [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], [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], [2216], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2280], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 00:48:53,070 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:48:53,070 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:48:55,788 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:48:57,642 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:48:57,644 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 00:48:57,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:48:57,677 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:48:59,852 INFO L227 lantSequenceWeakener]: Weakened 220 states. On average, predicates are now at 77.45% of their original sizes. [2018-11-07 00:48:59,853 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:49:00,198 INFO L415 sIntCurrentIteration]: We unified 227 AI predicates to 227 [2018-11-07 00:49:00,198 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:49:00,199 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:49:00,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 00:49:00,200 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:49:00,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 00:49:00,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 00:49:00,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 00:49:00,201 INFO L87 Difference]: Start difference. First operand 5754 states and 9275 transitions. Second operand 7 states. [2018-11-07 00:50:41,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:50:41,711 INFO L93 Difference]: Finished difference Result 12207 states and 19704 transitions. [2018-11-07 00:50:41,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:50:41,711 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2018-11-07 00:50:41,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:50:41,747 INFO L225 Difference]: With dead ends: 12207 [2018-11-07 00:50:41,747 INFO L226 Difference]: Without dead ends: 6459 [2018-11-07 00:50:41,762 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 228 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:50:41,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6459 states. [2018-11-07 00:50:41,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6459 to 6457. [2018-11-07 00:50:41,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6457 states. [2018-11-07 00:50:41,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6457 states to 6457 states and 9987 transitions. [2018-11-07 00:50:41,923 INFO L78 Accepts]: Start accepts. Automaton has 6457 states and 9987 transitions. Word has length 228 [2018-11-07 00:50:41,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:50:41,923 INFO L480 AbstractCegarLoop]: Abstraction has 6457 states and 9987 transitions. [2018-11-07 00:50:41,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 00:50:41,924 INFO L276 IsEmpty]: Start isEmpty. Operand 6457 states and 9987 transitions. [2018-11-07 00:50:41,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2018-11-07 00:50:41,936 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:50:41,937 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 00:50:41,937 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:50:41,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:50:41,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1330999225, now seen corresponding path program 1 times [2018-11-07 00:50:41,940 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:50:41,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:50:41,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:50:41,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:50:41,942 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:50:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:50:42,802 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 104 proven. 237 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:50:42,803 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:50:42,803 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:50:42,803 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 416 with the following transitions: [2018-11-07 00:50:42,804 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1699], [1701], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [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], [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], [2216], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2280], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [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] [2018-11-07 00:50:42,814 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:50:42,814 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:50:44,142 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:50:56,032 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:50:56,032 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 00:50:56,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:50:56,041 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:51:01,999 INFO L227 lantSequenceWeakener]: Weakened 191 states. On average, predicates are now at 77.62% of their original sizes. [2018-11-07 00:51:02,000 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:51:32,036 INFO L415 sIntCurrentIteration]: We unified 414 AI predicates to 414 [2018-11-07 00:51:32,037 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:51:32,037 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:51:32,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [11] total 26 [2018-11-07 00:51:32,038 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:51:32,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 00:51:32,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 00:51:32,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2018-11-07 00:51:32,040 INFO L87 Difference]: Start difference. First operand 6457 states and 9987 transitions. Second operand 17 states. Received shutdown request... [2018-11-07 00:52:01,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 00:52:01,921 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:52:01,926 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:52:01,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:52:01 BoogieIcfgContainer [2018-11-07 00:52:01,927 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:52:01,928 INFO L168 Benchmark]: Toolchain (without parser) took 227818.47 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -441.2 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 00:52:01,930 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-11-07 00:52:01,930 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1747.71 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. [2018-11-07 00:52:01,931 INFO L168 Benchmark]: Boogie Procedure Inliner took 276.20 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 746.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -935.6 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 00:52:01,932 INFO L168 Benchmark]: Boogie Preprocessor took 185.37 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-11-07 00:52:01,933 INFO L168 Benchmark]: RCFGBuilder took 9483.41 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 511.7 MB). Peak memory consumption was 511.7 MB. Max. memory is 7.1 GB. [2018-11-07 00:52:01,934 INFO L168 Benchmark]: TraceAbstraction took 216119.82 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.6 GB in the beginning and 1.8 GB in the end (delta: -179.4 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-07 00:52:01,940 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1747.71 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 276.20 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 746.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -935.6 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 185.37 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9483.41 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 511.7 MB). Peak memory consumption was 511.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216119.82 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.6 GB in the beginning and 1.8 GB in the end (delta: -179.4 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 54). Cancelled while BasicCegarLoop was constructing difference of abstraction (6457states) and FLOYD_HOARE automaton (currently 9 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (100 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 216.0s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 155.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1132 SDtfs, 8033 SDslu, 653 SDs, 0 SdLazy, 14776 SolverSat, 4533 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 98.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 671 GetRequests, 579 SyntacticMatches, 52 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 31.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6457occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 17.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9961874561938999 AbsIntWeakeningRatio, 0.0904836193447738 AbsIntAvgWeakeningVarsNumRemoved, 331.4040561622465 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 4 MinimizatonAttempts, 57 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 946 NumberOfCodeBlocks, 946 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 941 ConstructedInterpolants, 0 QuantifiedInterpolants, 1806377 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 174/501 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown