java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-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/Problem12_label03_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:10:16,917 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:10:16,920 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:10:16,932 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:10:16,932 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:10:16,933 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:10:16,934 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:10:16,937 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:10:16,939 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:10:16,942 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:10:16,945 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:10:16,945 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:10:16,946 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:10:16,948 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:10:16,950 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:10:16,951 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:10:16,953 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:10:16,955 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:10:16,967 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:10:16,971 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:10:16,972 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:10:16,974 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:10:16,980 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 22:10:16,981 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 22:10:16,981 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 22:10:16,984 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 22:10:16,985 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 22:10:16,986 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 22:10:16,987 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 22:10:16,990 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 22:10:16,990 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 22:10:16,991 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-23 22:10:16,991 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 22:10:16,991 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 22:10:16,992 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 22:10:16,995 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 22:10:16,996 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 22:10:17,025 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:10:17,026 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:10:17,027 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:10:17,027 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:10:17,027 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:10:17,027 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:10:17,027 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:10:17,028 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:10:17,028 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:10:17,028 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:10:17,028 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:10:17,028 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:10:17,029 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:10:17,029 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:10:17,029 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:10:17,030 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:10:17,030 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:10:17,030 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:10:17,030 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:10:17,030 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:10:17,031 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:10:17,031 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:10:17,031 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:10:17,031 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:10:17,031 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:10:17,032 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:10:17,032 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:10:17,032 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:10:17,032 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:10:17,032 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:10:17,033 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:10:17,033 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:10:17,033 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:10:17,033 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:10:17,080 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:10:17,095 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:10:17,100 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:10:17,102 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:10:17,102 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:10:17,103 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label03_false-unreach-call.c [2018-10-23 22:10:17,167 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e78692b20/c5d9120910ea481999c525b34860d8ae/FLAG79acdfe0d [2018-10-23 22:10:17,962 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:10:17,963 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label03_false-unreach-call.c [2018-10-23 22:10:17,999 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e78692b20/c5d9120910ea481999c525b34860d8ae/FLAG79acdfe0d [2018-10-23 22:10:18,019 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e78692b20/c5d9120910ea481999c525b34860d8ae [2018-10-23 22:10:18,034 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:10:18,036 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:10:18,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:10:18,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:10:18,042 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:10:18,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:10:18" (1/1) ... [2018-10-23 22:10:18,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bc1ab2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:10:18, skipping insertion in model container [2018-10-23 22:10:18,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:10:18" (1/1) ... [2018-10-23 22:10:18,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:10:18,231 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:10:19,498 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:10:19,506 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:10:20,165 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:10:20,198 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:10:20,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:10:20 WrapperNode [2018-10-23 22:10:20,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:10:20,201 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:10:20,201 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:10:20,201 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:10:20,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:10:20" (1/1) ... [2018-10-23 22:10:20,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:10:20" (1/1) ... [2018-10-23 22:10:20,695 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:10:20,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:10:20,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:10:20,696 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:10:20,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:10:20" (1/1) ... [2018-10-23 22:10:20,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:10:20" (1/1) ... [2018-10-23 22:10:20,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:10:20" (1/1) ... [2018-10-23 22:10:20,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:10:20" (1/1) ... [2018-10-23 22:10:20,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:10:20" (1/1) ... [2018-10-23 22:10:20,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:10:20" (1/1) ... [2018-10-23 22:10:20,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:10:20" (1/1) ... [2018-10-23 22:10:21,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:10:21,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:10:21,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:10:21,055 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:10:21,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:10:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 22:10:21,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:10:21,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:10:21,136 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-23 22:10:21,136 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-23 22:10:21,136 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-23 22:10:21,136 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-23 22:10:21,137 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-23 22:10:21,137 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-23 22:10:21,137 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:10:21,137 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:10:21,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:10:21,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:10:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:10:21,139 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:10:33,174 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:10:33,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:10:33 BoogieIcfgContainer [2018-10-23 22:10:33,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:10:33,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:10:33,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:10:33,179 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:10:33,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:10:18" (1/3) ... [2018-10-23 22:10:33,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f1a045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:10:33, skipping insertion in model container [2018-10-23 22:10:33,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:10:20" (2/3) ... [2018-10-23 22:10:33,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f1a045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:10:33, skipping insertion in model container [2018-10-23 22:10:33,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:10:33" (3/3) ... [2018-10-23 22:10:33,183 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label03_false-unreach-call.c [2018-10-23 22:10:33,193 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:10:33,204 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:10:33,221 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:10:33,269 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:10:33,269 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:10:33,270 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:10:33,270 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:10:33,270 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:10:33,270 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:10:33,270 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:10:33,271 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:10:33,313 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-23 22:10:33,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-23 22:10:33,323 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:10:33,325 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] [2018-10-23 22:10:33,327 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:10:33,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:10:33,334 INFO L82 PathProgramCache]: Analyzing trace with hash -2126860428, now seen corresponding path program 1 times [2018-10-23 22:10:33,337 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:10:33,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:10:33,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:10:33,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:10:33,391 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:10:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:10:33,774 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:10:33,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:10:33,868 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:10:33,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:10:33,869 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:10:33,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:10:33,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:10:33,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:10:33,894 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-23 22:10:46,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:10:46,416 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-23 22:10:46,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:10:46,418 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2018-10-23 22:10:46,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:10:46,452 INFO L225 Difference]: With dead ends: 2446 [2018-10-23 22:10:46,453 INFO L226 Difference]: Without dead ends: 1604 [2018-10-23 22:10:46,465 INFO L605 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 [2018-10-23 22:10:46,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-23 22:10:46,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-23 22:10:46,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-23 22:10:46,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-10-23 22:10:46,634 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 26 [2018-10-23 22:10:46,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:10:46,635 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-10-23 22:10:46,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:10:46,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-10-23 22:10:46,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-23 22:10:46,643 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:10:46,643 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:10:46,646 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:10:46,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:10:46,646 INFO L82 PathProgramCache]: Analyzing trace with hash 2008600922, now seen corresponding path program 1 times [2018-10-23 22:10:46,646 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:10:46,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:10:46,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:10:46,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:10:46,648 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:10:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:10:47,043 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:10:47,044 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:10:47,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:10:47,044 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:10:47,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:10:47,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:10:47,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:10:47,047 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 5 states. [2018-10-23 22:10:59,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:10:59,023 INFO L93 Difference]: Finished difference Result 4043 states and 7444 transitions. [2018-10-23 22:10:59,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:10:59,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2018-10-23 22:10:59,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:10:59,043 INFO L225 Difference]: With dead ends: 4043 [2018-10-23 22:10:59,043 INFO L226 Difference]: Without dead ends: 2445 [2018-10-23 22:10:59,049 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:10:59,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2445 states. [2018-10-23 22:10:59,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2445 to 2407. [2018-10-23 22:10:59,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2407 states. [2018-10-23 22:10:59,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2407 states to 2407 states and 4135 transitions. [2018-10-23 22:10:59,132 INFO L78 Accepts]: Start accepts. Automaton has 2407 states and 4135 transitions. Word has length 100 [2018-10-23 22:10:59,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:10:59,133 INFO L481 AbstractCegarLoop]: Abstraction has 2407 states and 4135 transitions. [2018-10-23 22:10:59,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:10:59,133 INFO L276 IsEmpty]: Start isEmpty. Operand 2407 states and 4135 transitions. [2018-10-23 22:10:59,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-23 22:10:59,138 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:10:59,138 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:10:59,138 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:10:59,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:10:59,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1895786230, now seen corresponding path program 1 times [2018-10-23 22:10:59,140 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:10:59,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:10:59,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:10:59,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:10:59,141 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:10:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:10:59,341 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:10:59,342 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:10:59,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:10:59,342 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:10:59,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:10:59,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:10:59,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:10:59,343 INFO L87 Difference]: Start difference. First operand 2407 states and 4135 transitions. Second operand 4 states. [2018-10-23 22:11:10,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:11:10,860 INFO L93 Difference]: Finished difference Result 9468 states and 16717 transitions. [2018-10-23 22:11:10,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:11:10,860 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2018-10-23 22:11:10,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:11:10,907 INFO L225 Difference]: With dead ends: 9468 [2018-10-23 22:11:10,908 INFO L226 Difference]: Without dead ends: 7067 [2018-10-23 22:11:10,922 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:11:10,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7067 states. [2018-10-23 22:11:11,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7067 to 7067. [2018-10-23 22:11:11,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7067 states. [2018-10-23 22:11:11,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7067 states to 7067 states and 11725 transitions. [2018-10-23 22:11:11,154 INFO L78 Accepts]: Start accepts. Automaton has 7067 states and 11725 transitions. Word has length 102 [2018-10-23 22:11:11,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:11:11,155 INFO L481 AbstractCegarLoop]: Abstraction has 7067 states and 11725 transitions. [2018-10-23 22:11:11,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:11:11,156 INFO L276 IsEmpty]: Start isEmpty. Operand 7067 states and 11725 transitions. [2018-10-23 22:11:11,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-23 22:11:11,164 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:11:11,164 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:11:11,165 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:11:11,165 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:11:11,165 INFO L82 PathProgramCache]: Analyzing trace with hash 319455283, now seen corresponding path program 1 times [2018-10-23 22:11:11,165 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:11:11,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:11:11,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:11:11,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:11:11,167 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:11:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:11:11,452 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:11:11,452 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:11:11,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:11:11,452 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:11:11,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:11:11,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:11:11,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:11:11,454 INFO L87 Difference]: Start difference. First operand 7067 states and 11725 transitions. Second operand 6 states. [2018-10-23 22:11:23,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:11:23,965 INFO L93 Difference]: Finished difference Result 25896 states and 44610 transitions. [2018-10-23 22:11:23,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:11:23,965 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-10-23 22:11:23,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:11:24,065 INFO L225 Difference]: With dead ends: 25896 [2018-10-23 22:11:24,066 INFO L226 Difference]: Without dead ends: 18835 [2018-10-23 22:11:24,128 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:11:24,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18835 states. [2018-10-23 22:11:24,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18835 to 18744. [2018-10-23 22:11:24,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18744 states. [2018-10-23 22:11:24,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18744 states to 18744 states and 28768 transitions. [2018-10-23 22:11:24,769 INFO L78 Accepts]: Start accepts. Automaton has 18744 states and 28768 transitions. Word has length 129 [2018-10-23 22:11:24,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:11:24,770 INFO L481 AbstractCegarLoop]: Abstraction has 18744 states and 28768 transitions. [2018-10-23 22:11:24,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:11:24,770 INFO L276 IsEmpty]: Start isEmpty. Operand 18744 states and 28768 transitions. [2018-10-23 22:11:24,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-23 22:11:24,792 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:11:24,792 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 22:11:24,793 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:11:24,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:11:24,796 INFO L82 PathProgramCache]: Analyzing trace with hash 466600808, now seen corresponding path program 1 times [2018-10-23 22:11:24,796 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:11:24,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:11:24,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:11:24,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:11:24,797 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:11:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:11:25,336 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 41 proven. 67 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-23 22:11:25,337 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:11:25,337 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:11:25,338 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 251 with the following transitions: [2018-10-23 22:11:25,340 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1975], [1977], [1980], [1988], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [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], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2672], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-23 22:11:25,417 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:11:25,418 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:11:35,806 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:11:35,808 INFO L272 AbstractInterpreter]: Visited 156 different actions 305 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-23 22:11:35,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:11:35,851 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:11:39,425 INFO L232 lantSequenceWeakener]: Weakened 151 states. On average, predicates are now at 75.5% of their original sizes. [2018-10-23 22:11:39,425 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:11:55,352 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:11:55,353 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:11:55,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-10-23 22:11:55,353 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:11:55,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-23 22:11:55,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-23 22:11:55,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2018-10-23 22:11:55,355 INFO L87 Difference]: Start difference. First operand 18744 states and 28768 transitions. Second operand 22 states. [2018-10-23 22:12:39,205 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-23 22:14:02,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-23 22:14:02,527 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:14:02,532 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:14:02,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:14:02 BoogieIcfgContainer [2018-10-23 22:14:02,533 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:14:02,533 INFO L168 Benchmark]: Toolchain (without parser) took 224498.50 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-23 22:14:02,534 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. [2018-10-23 22:14:02,535 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2161.95 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. [2018-10-23 22:14:02,536 INFO L168 Benchmark]: Boogie Procedure Inliner took 494.40 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 777.5 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 68.8 MB. Max. memory is 7.1 GB. [2018-10-23 22:14:02,537 INFO L168 Benchmark]: Boogie Preprocessor took 358.79 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: 37.5 MB). Peak memory consumption was 37.5 MB. Max. memory is 7.1 GB. [2018-10-23 22:14:02,538 INFO L168 Benchmark]: RCFGBuilder took 12120.52 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 184.5 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -213.5 MB). Peak memory consumption was 671.0 MB. Max. memory is 7.1 GB. [2018-10-23 22:14:02,539 INFO L168 Benchmark]: TraceAbstraction took 209356.75 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 2.4 GB in the end (delta: -54.3 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-23 22:14:02,544 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 2161.95 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 494.40 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 777.5 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 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 358.79 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: 37.5 MB). Peak memory consumption was 37.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12120.52 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 184.5 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -213.5 MB). Peak memory consumption was 671.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209356.75 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 2.4 GB in the end (delta: -54.3 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: 69]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 69). Cancelled while BasicCegarLoop was constructing difference of abstraction (18744states) and FLOYD_HOARE automaton (currently 18 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (1814 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 209.2s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 176.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1978 SDtfs, 10515 SDslu, 521 SDs, 0 SdLazy, 19108 SolverSat, 4603 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 94.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 286 GetRequests, 235 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 20.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18744occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.5s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9954772937905467 AbsIntWeakeningRatio, 0.10843373493975904 AbsIntAvgWeakeningVarsNumRemoved, 652.4176706827309 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 129 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 607 NumberOfCodeBlocks, 607 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 602 ConstructedInterpolants, 0 QuantifiedInterpolants, 463930 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 104/171 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown