java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label29_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:12:38,953 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:12:38,955 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:12:38,968 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:12:38,969 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:12:38,970 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:12:38,971 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:12:38,973 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:12:38,975 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:12:38,976 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:12:38,977 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:12:38,977 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:12:38,978 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:12:38,979 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:12:38,980 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:12:38,981 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:12:38,982 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:12:38,984 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:12:38,986 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:12:38,988 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:12:38,989 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:12:38,990 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:12:38,993 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:12:39,007 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 00:12:39,007 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 00:12:39,008 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 00:12:39,009 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 00:12:39,009 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:12:39,043 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:12:39,043 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:12:39,044 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:12:39,044 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:12:39,044 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:12:39,045 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:12:39,045 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:12:39,045 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:12:39,045 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:12:39,045 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:12:39,046 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:12:39,046 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:12:39,047 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:12:39,047 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:12:39,048 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:12:39,048 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:12:39,048 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:12:39,048 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:12:39,048 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:12:39,050 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:12:39,051 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:12:39,051 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:12:39,051 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:12:39,051 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:12:39,052 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:12:39,052 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:12:39,052 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:12:39,053 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:12:39,053 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:12:39,053 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:12:39,053 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:12:39,053 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:12:39,054 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:12:39,054 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:12:39,133 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:12:39,146 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:12:39,150 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:12:39,152 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:12:39,152 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:12:39,153 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label29_false-unreach-call.c [2018-11-07 00:12:39,213 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86982e547/e112250857554f5b9d5e45709532fe61/FLAG63b263b97 [2018-11-07 00:12:39,984 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:12:39,985 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label29_false-unreach-call.c [2018-11-07 00:12:40,019 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86982e547/e112250857554f5b9d5e45709532fe61/FLAG63b263b97 [2018-11-07 00:12:40,037 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86982e547/e112250857554f5b9d5e45709532fe61 [2018-11-07 00:12:40,049 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:12:40,051 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:12:40,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:12:40,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:12:40,057 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:12:40,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:12:40" (1/1) ... [2018-11-07 00:12:40,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ae48c7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:12:40, skipping insertion in model container [2018-11-07 00:12:40,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:12:40" (1/1) ... [2018-11-07 00:12:40,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:12:40,240 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:12:41,748 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:12:41,754 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:12:42,539 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:12:42,578 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:12:42,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:12:42 WrapperNode [2018-11-07 00:12:42,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:12:42,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:12:42,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:12:42,581 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:12:42,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:12:42" (1/1) ... [2018-11-07 00:12:42,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:12:42" (1/1) ... [2018-11-07 00:12:43,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:12:43,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:12:43,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:12:43,001 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:12:43,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:12:42" (1/1) ... [2018-11-07 00:12:43,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:12:42" (1/1) ... [2018-11-07 00:12:43,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:12:42" (1/1) ... [2018-11-07 00:12:43,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:12:42" (1/1) ... [2018-11-07 00:12:43,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:12:42" (1/1) ... [2018-11-07 00:12:43,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:12:42" (1/1) ... [2018-11-07 00:12:43,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:12:42" (1/1) ... [2018-11-07 00:12:43,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:12:43,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:12:43,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:12:43,294 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:12:43,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:12:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:12:43,376 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:12:43,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:12:43,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:12:43,377 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 00:12:43,377 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 00:12:43,377 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 00:12:43,377 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 00:12:43,378 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:12:43,378 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:12:43,378 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:12:43,378 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:12:43,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:12:43,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:12:43,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:12:43,380 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:12:53,659 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:12:53,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:12:53 BoogieIcfgContainer [2018-11-07 00:12:53,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:12:53,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:12:53,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:12:53,664 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:12:53,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:12:40" (1/3) ... [2018-11-07 00:12:53,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d1f53e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:12:53, skipping insertion in model container [2018-11-07 00:12:53,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:12:42" (2/3) ... [2018-11-07 00:12:53,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d1f53e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:12:53, skipping insertion in model container [2018-11-07 00:12:53,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:12:53" (3/3) ... [2018-11-07 00:12:53,668 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label29_false-unreach-call.c [2018-11-07 00:12:53,679 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:12:53,690 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:12:53,709 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:12:53,767 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:12:53,767 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:12:53,767 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:12:53,767 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:12:53,767 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:12:53,768 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:12:53,768 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:12:53,768 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:12:53,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 00:12:53,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-07 00:12:53,848 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:12:53,849 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] [2018-11-07 00:12:53,854 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:12:53,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:12:53,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1714801547, now seen corresponding path program 1 times [2018-11-07 00:12:53,864 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:12:53,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:12:53,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:12:53,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:12:53,926 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:12:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:12:54,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:12:54,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:12:54,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:12:54,305 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:12:54,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:12:54,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:12:54,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:12:54,332 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-11-07 00:13:06,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:13:06,496 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-11-07 00:13:06,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:13:06,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-11-07 00:13:06,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:13:06,566 INFO L225 Difference]: With dead ends: 3968 [2018-11-07 00:13:06,566 INFO L226 Difference]: Without dead ends: 2842 [2018-11-07 00:13:06,585 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:13:06,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-11-07 00:13:06,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-11-07 00:13:06,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-11-07 00:13:06,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-11-07 00:13:06,801 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 21 [2018-11-07 00:13:06,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:13:06,802 INFO L480 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-11-07 00:13:06,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:13:06,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-11-07 00:13:06,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-11-07 00:13:06,811 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:13:06,811 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:13:06,814 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:13:06,814 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:13:06,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1914103630, now seen corresponding path program 1 times [2018-11-07 00:13:06,814 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:13:06,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:13:06,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:13:06,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:13:06,817 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:13:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:13:07,202 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:13:07,203 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:13:07,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:13:07,203 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:13:07,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:13:07,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:13:07,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:13:07,206 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-11-07 00:13:18,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:13:18,678 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-11-07 00:13:18,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:13:18,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2018-11-07 00:13:18,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:13:18,706 INFO L225 Difference]: With dead ends: 5673 [2018-11-07 00:13:18,706 INFO L226 Difference]: Without dead ends: 3698 [2018-11-07 00:13:18,714 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:13:18,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-11-07 00:13:18,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-11-07 00:13:18,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-11-07 00:13:18,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5870 transitions. [2018-11-07 00:13:18,821 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5870 transitions. Word has length 91 [2018-11-07 00:13:18,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:13:18,822 INFO L480 AbstractCegarLoop]: Abstraction has 3687 states and 5870 transitions. [2018-11-07 00:13:18,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:13:18,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5870 transitions. [2018-11-07 00:13:18,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-11-07 00:13:18,825 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:13:18,825 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:13:18,825 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:13:18,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:13:18,826 INFO L82 PathProgramCache]: Analyzing trace with hash 688522610, now seen corresponding path program 1 times [2018-11-07 00:13:18,826 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:13:18,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:13:18,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:13:18,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:13:18,828 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:13:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:13:19,107 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:13:19,107 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:13:19,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:13:19,108 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:13:19,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:13:19,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:13:19,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:13:19,109 INFO L87 Difference]: Start difference. First operand 3687 states and 5870 transitions. Second operand 5 states. [2018-11-07 00:13:28,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:13:28,311 INFO L93 Difference]: Finished difference Result 10955 states and 17866 transitions. [2018-11-07 00:13:28,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 00:13:28,316 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2018-11-07 00:13:28,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:13:28,362 INFO L225 Difference]: With dead ends: 10955 [2018-11-07 00:13:28,362 INFO L226 Difference]: Without dead ends: 7274 [2018-11-07 00:13:28,377 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:13:28,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7274 states. [2018-11-07 00:13:28,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7274 to 7167. [2018-11-07 00:13:28,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7167 states. [2018-11-07 00:13:28,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7167 states to 7167 states and 10519 transitions. [2018-11-07 00:13:28,574 INFO L78 Accepts]: Start accepts. Automaton has 7167 states and 10519 transitions. Word has length 93 [2018-11-07 00:13:28,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:13:28,575 INFO L480 AbstractCegarLoop]: Abstraction has 7167 states and 10519 transitions. [2018-11-07 00:13:28,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:13:28,575 INFO L276 IsEmpty]: Start isEmpty. Operand 7167 states and 10519 transitions. [2018-11-07 00:13:28,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-11-07 00:13:28,579 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:13:28,579 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:13:28,579 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:13:28,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:13:28,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1754078826, now seen corresponding path program 1 times [2018-11-07 00:13:28,580 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:13:28,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:13:28,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:13:28,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:13:28,581 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:13:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:13:28,728 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:13:28,728 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:13:28,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:13:28,729 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:13:28,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:13:28,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:13:28,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:13:28,730 INFO L87 Difference]: Start difference. First operand 7167 states and 10519 transitions. Second operand 3 states. [2018-11-07 00:13:34,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:13:34,372 INFO L93 Difference]: Finished difference Result 20996 states and 32087 transitions. [2018-11-07 00:13:34,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:13:34,373 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2018-11-07 00:13:34,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:13:34,448 INFO L225 Difference]: With dead ends: 20996 [2018-11-07 00:13:34,449 INFO L226 Difference]: Without dead ends: 13835 [2018-11-07 00:13:34,493 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:13:34,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13835 states. [2018-11-07 00:13:34,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13835 to 13826. [2018-11-07 00:13:34,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13826 states. [2018-11-07 00:13:34,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13826 states to 13826 states and 19425 transitions. [2018-11-07 00:13:34,837 INFO L78 Accepts]: Start accepts. Automaton has 13826 states and 19425 transitions. Word has length 137 [2018-11-07 00:13:34,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:13:34,838 INFO L480 AbstractCegarLoop]: Abstraction has 13826 states and 19425 transitions. [2018-11-07 00:13:34,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:13:34,838 INFO L276 IsEmpty]: Start isEmpty. Operand 13826 states and 19425 transitions. [2018-11-07 00:13:34,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-11-07 00:13:34,841 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:13:34,841 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:13:34,842 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:13:34,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:13:34,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1376680716, now seen corresponding path program 1 times [2018-11-07 00:13:34,842 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:13:34,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:13:34,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:13:34,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:13:34,843 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:13:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:13:35,073 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:13:35,073 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:13:35,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:13:35,074 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:13:35,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:13:35,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:13:35,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:13:35,075 INFO L87 Difference]: Start difference. First operand 13826 states and 19425 transitions. Second operand 4 states. [2018-11-07 00:13:44,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:13:44,412 INFO L93 Difference]: Finished difference Result 53948 states and 81258 transitions. [2018-11-07 00:13:44,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:13:44,415 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2018-11-07 00:13:44,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:13:44,603 INFO L225 Difference]: With dead ends: 53948 [2018-11-07 00:13:44,604 INFO L226 Difference]: Without dead ends: 39315 [2018-11-07 00:13:44,698 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:13:44,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39315 states. [2018-11-07 00:13:45,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39315 to 39279. [2018-11-07 00:13:45,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39279 states. [2018-11-07 00:13:45,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39279 states to 39279 states and 54337 transitions. [2018-11-07 00:13:45,694 INFO L78 Accepts]: Start accepts. Automaton has 39279 states and 54337 transitions. Word has length 142 [2018-11-07 00:13:45,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:13:45,695 INFO L480 AbstractCegarLoop]: Abstraction has 39279 states and 54337 transitions. [2018-11-07 00:13:45,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:13:45,695 INFO L276 IsEmpty]: Start isEmpty. Operand 39279 states and 54337 transitions. [2018-11-07 00:13:45,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-11-07 00:13:45,702 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:13:45,702 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:13:45,702 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:13:45,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:13:45,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1914147908, now seen corresponding path program 1 times [2018-11-07 00:13:45,703 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:13:45,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:13:45,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:13:45,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:13:45,704 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:13:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:13:46,003 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:13:46,408 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 28 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:13:46,409 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:13:46,409 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:13:46,410 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 181 with the following transitions: [2018-11-07 00:13:46,418 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2695], [2697], [2700], [2708], [2716], [2724], [2732], [2740], [2748], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3128], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3202], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 00:13:46,524 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:13:46,524 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:13:51,411 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:13:51,413 INFO L272 AbstractInterpreter]: Visited 92 different actions 92 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 00:13:51,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:13:51,451 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:13:54,886 INFO L227 lantSequenceWeakener]: Weakened 159 states. On average, predicates are now at 71.23% of their original sizes. [2018-11-07 00:13:54,887 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:13:56,836 INFO L415 sIntCurrentIteration]: We unified 179 AI predicates to 179 [2018-11-07 00:13:56,837 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:13:56,838 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:13:56,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 00:13:56,838 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:13:56,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 00:13:56,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 00:13:56,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 00:13:56,839 INFO L87 Difference]: Start difference. First operand 39279 states and 54337 transitions. Second operand 10 states. [2018-11-07 00:14:38,503 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 00:16:27,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 00:16:27,474 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:16:27,480 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:16:27,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:16:27 BoogieIcfgContainer [2018-11-07 00:16:27,480 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:16:27,481 INFO L168 Benchmark]: Toolchain (without parser) took 227431.10 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 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 830.0 MB. Max. memory is 7.1 GB. [2018-11-07 00:16:27,482 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. [2018-11-07 00:16:27,483 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2527.46 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-11-07 00:16:27,484 INFO L168 Benchmark]: Boogie Procedure Inliner took 420.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 814.7 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. [2018-11-07 00:16:27,485 INFO L168 Benchmark]: Boogie Preprocessor took 292.19 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. [2018-11-07 00:16:27,486 INFO L168 Benchmark]: RCFGBuilder took 10366.42 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 151.5 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 48.4 MB). Peak memory consumption was 662.2 MB. Max. memory is 7.1 GB. [2018-11-07 00:16:27,487 INFO L168 Benchmark]: TraceAbstraction took 213819.29 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 3.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 638.9 MB. Max. memory is 7.1 GB. [2018-11-07 00:16:27,493 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 2527.46 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 420.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 814.7 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 292.19 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10366.42 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 151.5 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 48.4 MB). Peak memory consumption was 662.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213819.29 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 3.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 638.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 54). Cancelled while BasicCegarLoop was constructing difference of abstraction (39279states) and FLOYD_HOARE automaton (currently 9 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (8393 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 213.7s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 199.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4133 SDtfs, 13050 SDslu, 2387 SDs, 0 SdLazy, 23624 SolverSat, 6117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 144.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 215 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39279occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.0s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9945853029651911 AbsIntWeakeningRatio, 0.15083798882681565 AbsIntAvgWeakeningVarsNumRemoved, 55.84357541899441 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 5 MinimizatonAttempts, 1024 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 664 NumberOfCodeBlocks, 664 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 658 ConstructedInterpolants, 0 QuantifiedInterpolants, 228262 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 89/156 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown