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/Problem19_label23_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 02:23:49,985 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 02:23:49,988 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 02:23:50,003 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 02:23:50,004 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 02:23:50,005 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 02:23:50,007 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 02:23:50,011 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 02:23:50,013 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 02:23:50,015 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 02:23:50,023 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 02:23:50,023 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 02:23:50,024 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 02:23:50,025 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 02:23:50,029 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 02:23:50,030 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 02:23:50,032 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 02:23:50,035 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 02:23:50,039 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 02:23:50,042 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 02:23:50,044 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 02:23:50,045 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 02:23:50,049 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 02:23:50,056 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 02:23:50,056 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 02:23:50,059 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 02:23:50,060 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 02:23:50,060 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 [2018-10-24 02:23:50,089 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 02:23:50,090 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 02:23:50,091 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 02:23:50,091 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 02:23:50,091 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 02:23:50,091 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 02:23:50,092 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 02:23:50,092 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 02:23:50,092 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 02:23:50,092 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 02:23:50,092 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 02:23:50,093 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 02:23:50,093 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 02:23:50,094 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 02:23:50,095 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 02:23:50,095 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 02:23:50,095 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 02:23:50,095 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 02:23:50,096 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 02:23:50,096 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 02:23:50,096 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 02:23:50,096 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 02:23:50,096 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 02:23:50,097 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 02:23:50,098 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 02:23:50,098 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 02:23:50,098 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 02:23:50,099 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 02:23:50,099 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 02:23:50,099 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 02:23:50,099 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 02:23:50,099 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 02:23:50,100 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 02:23:50,100 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 02:23:50,153 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 02:23:50,166 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 02:23:50,170 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 02:23:50,171 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 02:23:50,172 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 02:23:50,173 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label23_true-unreach-call.c [2018-10-24 02:23:50,240 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d0e45c935/e61b143536f4440cbe04e265fca3211e/FLAGfa4306187 [2018-10-24 02:23:51,154 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 02:23:51,155 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label23_true-unreach-call.c [2018-10-24 02:23:51,199 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d0e45c935/e61b143536f4440cbe04e265fca3211e/FLAGfa4306187 [2018-10-24 02:23:51,217 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d0e45c935/e61b143536f4440cbe04e265fca3211e [2018-10-24 02:23:51,229 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 02:23:51,231 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 02:23:51,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 02:23:51,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 02:23:51,237 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 02:23:51,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:23:51" (1/1) ... [2018-10-24 02:23:51,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6138a10b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:51, skipping insertion in model container [2018-10-24 02:23:51,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:23:51" (1/1) ... [2018-10-24 02:23:51,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 02:23:51,554 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 02:23:53,519 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:23:53,524 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 02:23:54,534 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:23:54,586 INFO L193 MainTranslator]: Completed translation [2018-10-24 02:23:54,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:54 WrapperNode [2018-10-24 02:23:54,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 02:23:54,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 02:23:54,588 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 02:23:54,588 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 02:23:54,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:54" (1/1) ... [2018-10-24 02:23:54,695 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:54" (1/1) ... [2018-10-24 02:23:55,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 02:23:55,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 02:23:55,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 02:23:55,305 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 02:23:55,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:54" (1/1) ... [2018-10-24 02:23:55,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:54" (1/1) ... [2018-10-24 02:23:55,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:54" (1/1) ... [2018-10-24 02:23:55,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:54" (1/1) ... [2018-10-24 02:23:55,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:54" (1/1) ... [2018-10-24 02:23:55,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:54" (1/1) ... [2018-10-24 02:23:55,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:54" (1/1) ... [2018-10-24 02:23:55,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 02:23:55,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 02:23:55,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 02:23:55,913 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 02:23:55,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:54" (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 [2018-10-24 02:23:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 02:23:55,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 02:23:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-24 02:23:55,983 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-24 02:23:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-24 02:23:55,984 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-24 02:23:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 02:23:55,984 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 02:23:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 02:23:55,985 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 02:23:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 02:23:55,985 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 02:23:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 02:23:55,986 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 02:23:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 02:23:55,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 02:23:55,987 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 02:23:55,987 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 02:24:16,228 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 02:24:16,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:24:16 BoogieIcfgContainer [2018-10-24 02:24:16,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 02:24:16,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 02:24:16,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 02:24:16,235 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 02:24:16,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:23:51" (1/3) ... [2018-10-24 02:24:16,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc11d59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:24:16, skipping insertion in model container [2018-10-24 02:24:16,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:23:54" (2/3) ... [2018-10-24 02:24:16,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc11d59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:24:16, skipping insertion in model container [2018-10-24 02:24:16,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:24:16" (3/3) ... [2018-10-24 02:24:16,241 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label23_true-unreach-call.c [2018-10-24 02:24:16,250 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 02:24:16,260 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 02:24:16,277 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 02:24:16,341 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 02:24:16,341 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 02:24:16,342 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 02:24:16,342 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 02:24:16,342 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 02:24:16,342 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 02:24:16,342 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 02:24:16,342 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 02:24:16,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-24 02:24:16,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-24 02:24:16,409 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:24:16,410 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:24:16,413 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:24:16,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:24:16,419 INFO L82 PathProgramCache]: Analyzing trace with hash -11956822, now seen corresponding path program 1 times [2018-10-24 02:24:16,421 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:24:16,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:24:16,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:24:16,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:24:16,474 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:24:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:24:16,928 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:24:17,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:24:17,084 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:24:17,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 02:24:17,085 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:24:17,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 02:24:17,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 02:24:17,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 02:24:17,111 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-10-24 02:24:32,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:24:32,590 INFO L93 Difference]: Finished difference Result 4999 states and 9420 transitions. [2018-10-24 02:24:32,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 02:24:32,596 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2018-10-24 02:24:32,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:24:32,643 INFO L225 Difference]: With dead ends: 4999 [2018-10-24 02:24:32,643 INFO L226 Difference]: Without dead ends: 3219 [2018-10-24 02:24:32,656 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 [2018-10-24 02:24:32,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2018-10-24 02:24:32,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3215. [2018-10-24 02:24:32,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-10-24 02:24:32,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5845 transitions. [2018-10-24 02:24:32,879 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5845 transitions. Word has length 59 [2018-10-24 02:24:32,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:24:32,880 INFO L481 AbstractCegarLoop]: Abstraction has 3215 states and 5845 transitions. [2018-10-24 02:24:32,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 02:24:32,881 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5845 transitions. [2018-10-24 02:24:32,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-24 02:24:32,891 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:24:32,891 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:24:32,892 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:24:32,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:24:32,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1729747758, now seen corresponding path program 1 times [2018-10-24 02:24:32,892 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:24:32,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:24:32,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:24:32,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:24:32,898 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:24:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:24:33,305 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:24:33,712 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:24:33,713 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:24:33,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:24:33,713 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:24:33,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:24:33,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:24:33,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:24:33,717 INFO L87 Difference]: Start difference. First operand 3215 states and 5845 transitions. Second operand 6 states. [2018-10-24 02:25:03,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:25:03,205 INFO L93 Difference]: Finished difference Result 9343 states and 16923 transitions. [2018-10-24 02:25:03,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 02:25:03,211 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-10-24 02:25:03,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:25:03,242 INFO L225 Difference]: With dead ends: 9343 [2018-10-24 02:25:03,243 INFO L226 Difference]: Without dead ends: 6134 [2018-10-24 02:25:03,254 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 02:25:03,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6134 states. [2018-10-24 02:25:03,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6134 to 6093. [2018-10-24 02:25:03,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6093 states. [2018-10-24 02:25:03,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6093 states to 6093 states and 9626 transitions. [2018-10-24 02:25:03,442 INFO L78 Accepts]: Start accepts. Automaton has 6093 states and 9626 transitions. Word has length 131 [2018-10-24 02:25:03,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:25:03,442 INFO L481 AbstractCegarLoop]: Abstraction has 6093 states and 9626 transitions. [2018-10-24 02:25:03,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:25:03,443 INFO L276 IsEmpty]: Start isEmpty. Operand 6093 states and 9626 transitions. [2018-10-24 02:25:03,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-24 02:25:03,453 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:25:03,453 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:25:03,457 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:25:03,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:25:03,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1793375852, now seen corresponding path program 1 times [2018-10-24 02:25:03,458 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:25:03,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:25:03,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:25:03,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:25:03,459 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:25:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:25:03,661 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:25:03,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:25:03,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:25:03,662 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:25:03,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:25:03,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:25:03,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:25:03,663 INFO L87 Difference]: Start difference. First operand 6093 states and 9626 transitions. Second operand 6 states. [2018-10-24 02:25:53,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:25:53,982 INFO L93 Difference]: Finished difference Result 24269 states and 39735 transitions. [2018-10-24 02:25:53,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 02:25:53,983 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-10-24 02:25:53,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:25:54,062 INFO L225 Difference]: With dead ends: 24269 [2018-10-24 02:25:54,063 INFO L226 Difference]: Without dead ends: 18182 [2018-10-24 02:25:54,100 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 02:25:54,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18182 states. [2018-10-24 02:25:54,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18182 to 18106. [2018-10-24 02:25:54,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18106 states. [2018-10-24 02:25:54,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18106 states to 18106 states and 25652 transitions. [2018-10-24 02:25:54,570 INFO L78 Accepts]: Start accepts. Automaton has 18106 states and 25652 transitions. Word has length 149 [2018-10-24 02:25:54,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:25:54,571 INFO L481 AbstractCegarLoop]: Abstraction has 18106 states and 25652 transitions. [2018-10-24 02:25:54,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:25:54,571 INFO L276 IsEmpty]: Start isEmpty. Operand 18106 states and 25652 transitions. [2018-10-24 02:25:54,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-24 02:25:54,578 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:25:54,578 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:25:54,579 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:25:54,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:25:54,582 INFO L82 PathProgramCache]: Analyzing trace with hash -808835625, now seen corresponding path program 1 times [2018-10-24 02:25:54,582 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:25:54,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:25:54,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:25:54,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:25:54,584 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:25:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:25:55,073 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:25:55,074 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:25:55,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 02:25:55,074 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:25:55,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 02:25:55,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 02:25:55,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 02:25:55,076 INFO L87 Difference]: Start difference. First operand 18106 states and 25652 transitions. Second operand 5 states. [2018-10-24 02:26:20,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:26:20,283 INFO L93 Difference]: Finished difference Result 56377 states and 85084 transitions. [2018-10-24 02:26:20,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 02:26:20,284 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2018-10-24 02:26:20,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:26:20,432 INFO L225 Difference]: With dead ends: 56377 [2018-10-24 02:26:20,433 INFO L226 Difference]: Without dead ends: 38277 [2018-10-24 02:26:20,487 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 02:26:20,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38277 states. [2018-10-24 02:26:21,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38277 to 37207. [2018-10-24 02:26:21,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37207 states. [2018-10-24 02:26:21,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37207 states to 37207 states and 50477 transitions. [2018-10-24 02:26:21,526 INFO L78 Accepts]: Start accepts. Automaton has 37207 states and 50477 transitions. Word has length 194 [2018-10-24 02:26:21,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:26:21,527 INFO L481 AbstractCegarLoop]: Abstraction has 37207 states and 50477 transitions. [2018-10-24 02:26:21,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 02:26:21,527 INFO L276 IsEmpty]: Start isEmpty. Operand 37207 states and 50477 transitions. [2018-10-24 02:26:21,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-24 02:26:21,537 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:26:21,538 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:26:21,538 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:26:21,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:26:21,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1152839494, now seen corresponding path program 1 times [2018-10-24 02:26:21,539 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:26:21,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:26:21,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:26:21,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:26:21,540 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:26:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:26:22,096 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 104 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 02:26:22,099 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:26:22,099 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 02:26:22,100 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 215 with the following transitions: [2018-10-24 02:26:22,102 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5594], [5598], [5600], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5745], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5781], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-24 02:26:22,202 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 02:26:22,202 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 02:26:25,311 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 02:26:25,312 INFO L272 AbstractInterpreter]: Visited 87 different actions 87 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 02:26:25,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:26:25,322 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 02:26:27,828 INFO L232 lantSequenceWeakener]: Weakened 206 states. On average, predicates are now at 75.86% of their original sizes. [2018-10-24 02:26:27,830 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 02:26:28,358 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 02:26:28,360 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 02:26:28,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 02:26:28,360 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:26:28,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 02:26:28,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 02:26:28,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 02:26:28,361 INFO L87 Difference]: Start difference. First operand 37207 states and 50477 transitions. Second operand 7 states. [2018-10-24 02:26:31,512 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 02:27:26,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:27:26,099 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 02:27:26,104 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 02:27:26,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:27:26 BoogieIcfgContainer [2018-10-24 02:27:26,104 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 02:27:26,105 INFO L168 Benchmark]: Toolchain (without parser) took 214875.15 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 484.9 MB. Max. memory is 7.1 GB. [2018-10-24 02:27:26,106 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 02:27:26,107 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3355.15 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 402.5 MB). Peak memory consumption was 402.5 MB. Max. memory is 7.1 GB. [2018-10-24 02:27:26,107 INFO L168 Benchmark]: Boogie Procedure Inliner took 716.93 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 867.7 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-24 02:27:26,108 INFO L168 Benchmark]: Boogie Preprocessor took 607.84 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 52.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 7.1 GB. [2018-10-24 02:27:26,109 INFO L168 Benchmark]: RCFGBuilder took 20315.57 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 156.2 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 517.2 MB). Peak memory consumption was 673.4 MB. Max. memory is 7.1 GB. [2018-10-24 02:27:26,110 INFO L168 Benchmark]: TraceAbstraction took 189874.74 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 3.5 GB in the end (delta: -1.8 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 02:27:26,116 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3355.15 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 402.5 MB). Peak memory consumption was 402.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 716.93 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 867.7 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 607.84 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 52.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 20315.57 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 156.2 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 517.2 MB). Peak memory consumption was 673.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 189874.74 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 3.5 GB in the end (delta: -1.8 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 172]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 172). Cancelled while BasicCegarLoop was constructing difference of abstraction (37207states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (23023 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 189.7s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 178.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2915 SDtfs, 22645 SDslu, 3012 SDs, 0 SdLazy, 40141 SolverSat, 10306 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 136.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 249 GetRequests, 218 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37207occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9954496208017335 AbsIntWeakeningRatio, 0.1267605633802817 AbsIntAvgWeakeningVarsNumRemoved, 1045.1267605633802 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 4 MinimizatonAttempts, 1191 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 747 NumberOfCodeBlocks, 747 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 742 ConstructedInterpolants, 0 QuantifiedInterpolants, 485718 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 265/333 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown