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/Problem13_label09_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:28:34,972 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:28:34,976 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:28:34,988 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:28:34,989 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:28:34,992 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:28:34,994 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:28:34,996 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:28:34,999 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:28:35,001 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:28:35,009 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:28:35,009 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:28:35,010 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:28:35,011 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:28:35,016 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:28:35,017 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:28:35,018 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:28:35,022 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:28:35,024 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:28:35,027 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:28:35,031 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:28:35,032 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:28:35,036 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:28:35,045 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:28:35,046 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:28:35,046 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:28:35,047 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:28:35,047 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 21:28:35,076 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:28:35,076 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:28:35,077 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:28:35,077 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:28:35,078 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:28:35,079 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:28:35,079 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:28:35,079 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:28:35,079 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:28:35,079 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:28:35,080 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:28:35,080 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:28:35,081 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:28:35,082 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:28:35,082 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:28:35,083 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:28:35,083 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:28:35,083 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:28:35,083 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:28:35,083 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:28:35,084 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:28:35,085 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:28:35,085 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:28:35,085 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:28:35,085 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:28:35,086 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:28:35,086 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:28:35,086 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:28:35,086 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:28:35,086 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:28:35,087 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:28:35,087 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:28:35,087 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:28:35,087 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:28:35,141 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:28:35,156 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:28:35,159 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:28:35,161 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:28:35,161 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:28:35,162 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label09_true-unreach-call.c [2018-10-24 21:28:35,230 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c047fdb8b/652ec45be80a40d0985b7fc49dbe3e31/FLAG8321b5b30 [2018-10-24 21:28:36,125 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:28:36,127 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label09_true-unreach-call.c [2018-10-24 21:28:36,170 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c047fdb8b/652ec45be80a40d0985b7fc49dbe3e31/FLAG8321b5b30 [2018-10-24 21:28:36,188 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c047fdb8b/652ec45be80a40d0985b7fc49dbe3e31 [2018-10-24 21:28:36,201 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:28:36,203 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:28:36,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:28:36,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:28:36,209 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:28:36,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:28:36" (1/1) ... [2018-10-24 21:28:36,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@639b200f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:36, skipping insertion in model container [2018-10-24 21:28:36,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:28:36" (1/1) ... [2018-10-24 21:28:36,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:28:36,424 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:28:38,005 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:28:38,010 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:28:38,701 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:28:38,746 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:28:38,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:38 WrapperNode [2018-10-24 21:28:38,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:28:38,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:28:38,748 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:28:38,749 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:28:38,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:38" (1/1) ... [2018-10-24 21:28:38,846 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:38" (1/1) ... [2018-10-24 21:28:39,374 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:28:39,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:28:39,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:28:39,375 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:28:39,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:38" (1/1) ... [2018-10-24 21:28:39,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:38" (1/1) ... [2018-10-24 21:28:39,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:38" (1/1) ... [2018-10-24 21:28:39,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:38" (1/1) ... [2018-10-24 21:28:39,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:38" (1/1) ... [2018-10-24 21:28:39,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:38" (1/1) ... [2018-10-24 21:28:39,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:38" (1/1) ... [2018-10-24 21:28:39,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:28:39,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:28:39,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:28:39,714 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:28:39,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:38" (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 21:28:39,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:28:39,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:28:39,791 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 21:28:39,792 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 21:28:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 21:28:39,792 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 21:28:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:28:39,792 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:28:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:28:39,793 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:28:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:28:39,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:28:39,794 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:28:39,796 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:28:51,298 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:28:51,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:28:51 BoogieIcfgContainer [2018-10-24 21:28:51,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:28:51,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:28:51,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:28:51,304 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:28:51,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:28:36" (1/3) ... [2018-10-24 21:28:51,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4a0347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:28:51, skipping insertion in model container [2018-10-24 21:28:51,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:38" (2/3) ... [2018-10-24 21:28:51,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4a0347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:28:51, skipping insertion in model container [2018-10-24 21:28:51,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:28:51" (3/3) ... [2018-10-24 21:28:51,308 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label09_true-unreach-call.c [2018-10-24 21:28:51,318 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:28:51,330 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:28:51,348 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:28:51,406 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:28:51,406 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:28:51,406 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:28:51,406 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:28:51,407 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:28:51,407 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:28:51,407 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:28:51,407 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:28:51,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 21:28:51,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-24 21:28:51,475 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:28:51,476 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:28:51,479 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:28:51,486 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:28:51,486 INFO L82 PathProgramCache]: Analyzing trace with hash 688094243, now seen corresponding path program 1 times [2018-10-24 21:28:51,489 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:28:51,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:28:51,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:28:51,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:28:51,550 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:28:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:28:52,059 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:28:52,191 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 21:28:52,194 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:28:52,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:28:52,194 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:28:52,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:28:52,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:28:52,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:28:52,220 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-10-24 21:29:02,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:29:02,680 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-10-24 21:29:02,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:29:02,682 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2018-10-24 21:29:02,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:29:02,718 INFO L225 Difference]: With dead ends: 3097 [2018-10-24 21:29:02,719 INFO L226 Difference]: Without dead ends: 1975 [2018-10-24 21:29:02,748 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 21:29:02,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-10-24 21:29:02,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-10-24 21:29:02,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-10-24 21:29:02,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-10-24 21:29:02,970 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 67 [2018-10-24 21:29:02,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:29:02,971 INFO L481 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-10-24 21:29:02,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:29:02,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-10-24 21:29:02,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-24 21:29:02,986 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:29:02,989 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, 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] [2018-10-24 21:29:02,990 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:29:02,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:29:02,990 INFO L82 PathProgramCache]: Analyzing trace with hash 758431250, now seen corresponding path program 1 times [2018-10-24 21:29:02,990 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:29:02,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:29:02,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:29:02,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:29:02,993 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:29:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:29:03,262 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:29:03,263 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:29:03,263 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:29:03,263 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:29:03,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:29:03,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:29:03,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:29:03,270 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-10-24 21:29:23,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:29:23,952 INFO L93 Difference]: Finished difference Result 5736 states and 9691 transitions. [2018-10-24 21:29:23,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:29:23,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2018-10-24 21:29:23,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:29:23,986 INFO L225 Difference]: With dead ends: 5736 [2018-10-24 21:29:23,986 INFO L226 Difference]: Without dead ends: 3768 [2018-10-24 21:29:23,994 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:29:23,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2018-10-24 21:29:24,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 3686. [2018-10-24 21:29:24,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3686 states. [2018-10-24 21:29:24,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 5660 transitions. [2018-10-24 21:29:24,126 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 5660 transitions. Word has length 143 [2018-10-24 21:29:24,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:29:24,127 INFO L481 AbstractCegarLoop]: Abstraction has 3686 states and 5660 transitions. [2018-10-24 21:29:24,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:29:24,127 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 5660 transitions. [2018-10-24 21:29:24,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-24 21:29:24,141 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:29:24,141 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, 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] [2018-10-24 21:29:24,142 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:29:24,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:29:24,142 INFO L82 PathProgramCache]: Analyzing trace with hash 2052836206, now seen corresponding path program 1 times [2018-10-24 21:29:24,142 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:29:24,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:29:24,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:29:24,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:29:24,144 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:29:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:29:24,455 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:29:24,455 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:29:24,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:29:24,455 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:29:24,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:29:24,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:29:24,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:29:24,457 INFO L87 Difference]: Start difference. First operand 3686 states and 5660 transitions. Second operand 5 states. [2018-10-24 21:29:58,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:29:58,469 INFO L93 Difference]: Finished difference Result 13666 states and 21762 transitions. [2018-10-24 21:29:58,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:29:58,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2018-10-24 21:29:58,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:29:58,535 INFO L225 Difference]: With dead ends: 13666 [2018-10-24 21:29:58,535 INFO L226 Difference]: Without dead ends: 9986 [2018-10-24 21:29:58,561 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:29:58,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9986 states. [2018-10-24 21:29:58,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9986 to 9796. [2018-10-24 21:29:58,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9796 states. [2018-10-24 21:29:58,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9796 states to 9796 states and 14502 transitions. [2018-10-24 21:29:58,857 INFO L78 Accepts]: Start accepts. Automaton has 9796 states and 14502 transitions. Word has length 157 [2018-10-24 21:29:58,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:29:58,858 INFO L481 AbstractCegarLoop]: Abstraction has 9796 states and 14502 transitions. [2018-10-24 21:29:58,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:29:58,858 INFO L276 IsEmpty]: Start isEmpty. Operand 9796 states and 14502 transitions. [2018-10-24 21:29:58,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-10-24 21:29:58,865 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:29:58,865 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, 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] [2018-10-24 21:29:58,865 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:29:58,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:29:58,866 INFO L82 PathProgramCache]: Analyzing trace with hash -2003299502, now seen corresponding path program 1 times [2018-10-24 21:29:58,866 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:29:58,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:29:58,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:29:58,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:29:58,867 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:29:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:29:59,212 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:29:59,370 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:29:59,371 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:29:59,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:29:59,371 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:29:59,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:29:59,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:29:59,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:29:59,373 INFO L87 Difference]: Start difference. First operand 9796 states and 14502 transitions. Second operand 6 states. [2018-10-24 21:30:13,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:30:13,329 INFO L93 Difference]: Finished difference Result 34194 states and 53805 transitions. [2018-10-24 21:30:13,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:30:13,330 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2018-10-24 21:30:13,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:30:13,469 INFO L225 Difference]: With dead ends: 34194 [2018-10-24 21:30:13,469 INFO L226 Difference]: Without dead ends: 24404 [2018-10-24 21:30:13,545 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:30:13,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24404 states. [2018-10-24 21:30:14,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24404 to 24171. [2018-10-24 21:30:14,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24171 states. [2018-10-24 21:30:14,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24171 states to 24171 states and 34070 transitions. [2018-10-24 21:30:14,204 INFO L78 Accepts]: Start accepts. Automaton has 24171 states and 34070 transitions. Word has length 175 [2018-10-24 21:30:14,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:30:14,205 INFO L481 AbstractCegarLoop]: Abstraction has 24171 states and 34070 transitions. [2018-10-24 21:30:14,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:30:14,205 INFO L276 IsEmpty]: Start isEmpty. Operand 24171 states and 34070 transitions. [2018-10-24 21:30:14,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-10-24 21:30:14,229 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:30:14,230 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 21:30:14,230 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:30:14,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:30:14,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1822344931, now seen corresponding path program 1 times [2018-10-24 21:30:14,231 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:30:14,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:30:14,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:30:14,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:30:14,232 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:30:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:30:14,557 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:30:14,980 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 120 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:30:14,980 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:30:14,980 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:30:14,982 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 282 with the following transitions: [2018-10-24 21:30:14,986 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3051], [3059], [3063], [3065], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3140], [3143], [3147], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3425], [3429], [3440], [3443], [3448], [3450], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 21:30:15,087 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:30:15,087 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:30:23,007 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:30:23,009 INFO L272 AbstractInterpreter]: Visited 140 different actions 140 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 21:30:23,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:30:23,020 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:30:27,989 INFO L232 lantSequenceWeakener]: Weakened 256 states. On average, predicates are now at 71.83% of their original sizes. [2018-10-24 21:30:27,990 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:30:29,726 INFO L413 sIntCurrentIteration]: We have 280 unified AI predicates [2018-10-24 21:30:29,726 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:30:29,727 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:30:29,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [6] total 16 [2018-10-24 21:30:29,727 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:30:29,728 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 21:30:29,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 21:30:29,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2018-10-24 21:30:29,729 INFO L87 Difference]: Start difference. First operand 24171 states and 34070 transitions. Second operand 12 states. [2018-10-24 21:31:08,626 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 21:32:17,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 21:32:17,649 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:32:17,655 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:32:17,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:32:17 BoogieIcfgContainer [2018-10-24 21:32:17,656 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:32:17,657 INFO L168 Benchmark]: Toolchain (without parser) took 221454.83 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 21:32:17,658 INFO L168 Benchmark]: CDTParser took 0.19 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 21:32:17,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2542.83 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. [2018-10-24 21:32:17,659 INFO L168 Benchmark]: Boogie Procedure Inliner took 626.74 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 825.8 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 73.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:32:17,660 INFO L168 Benchmark]: Boogie Preprocessor took 338.53 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: 37.9 MB). Peak memory consumption was 37.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:32:17,661 INFO L168 Benchmark]: RCFGBuilder took 11585.66 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 186.6 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 16.8 MB). Peak memory consumption was 666.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:32:17,662 INFO L168 Benchmark]: TraceAbstraction took 206355.62 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 2.9 GB in the end (delta: -721.4 MB). Peak memory consumption was 978.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:32:17,668 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 2542.83 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 626.74 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 825.8 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 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 338.53 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: 37.9 MB). Peak memory consumption was 37.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11585.66 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 186.6 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 16.8 MB). Peak memory consumption was 666.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206355.62 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 2.9 GB in the end (delta: -721.4 MB). Peak memory consumption was 978.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 192]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 192). Cancelled while BasicCegarLoop was constructing difference of abstraction (24171states) and FLOYD_HOARE automaton (currently 11 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (3132 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 206.2s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 187.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2193 SDtfs, 13502 SDslu, 2224 SDs, 0 SdLazy, 25175 SolverSat, 5766 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 147.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 318 GetRequests, 280 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24171occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.0s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9968241758241756 AbsIntWeakeningRatio, 0.11071428571428571 AbsIntAvgWeakeningVarsNumRemoved, 23.05 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 506 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 823 NumberOfCodeBlocks, 823 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 818 ConstructedInterpolants, 0 QuantifiedInterpolants, 401846 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 305/375 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown