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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label27_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:41:32,153 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:41:32,155 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:41:32,168 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:41:32,168 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:41:32,169 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:41:32,170 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:41:32,172 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:41:32,174 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:41:32,175 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:41:32,176 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:41:32,176 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:41:32,177 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:41:32,178 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:41:32,179 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:41:32,180 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:41:32,181 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:41:32,183 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:41:32,185 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:41:32,186 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:41:32,187 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:41:32,189 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:41:32,195 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:41:32,212 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-24 22:41:32,242 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:41:32,242 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:41:32,244 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:41:32,244 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:41:32,244 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:41:32,244 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:41:32,248 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 22:41:32,248 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:41:32,248 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 22:41:32,248 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:41:32,249 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:41:32,249 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:41:32,249 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:41:32,249 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:41:32,250 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:41:32,250 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:41:32,251 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:41:32,251 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:41:32,251 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:41:32,251 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:41:32,251 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:41:32,252 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:41:32,252 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:41:32,252 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:41:32,252 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:41:32,252 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:41:32,253 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:41:32,253 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:41:32,253 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:41:32,253 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:41:32,253 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:41:32,253 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:41:32,254 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:41:32,254 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:41:32,254 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:41:32,254 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:41:32,308 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:41:32,325 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:41:32,329 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:41:32,331 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:41:32,332 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:41:32,333 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label27_false-unreach-call.c [2018-10-24 22:41:32,405 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6c5d11934/3c8275a6a8fb4fab8723b192cbea9170/FLAG353676f6f [2018-10-24 22:41:33,129 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:41:33,130 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label27_false-unreach-call.c [2018-10-24 22:41:33,148 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6c5d11934/3c8275a6a8fb4fab8723b192cbea9170/FLAG353676f6f [2018-10-24 22:41:33,165 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6c5d11934/3c8275a6a8fb4fab8723b192cbea9170 [2018-10-24 22:41:33,176 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:41:33,177 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:41:33,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:41:33,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:41:33,183 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:41:33,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:41:33" (1/1) ... [2018-10-24 22:41:33,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4aab1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:33, skipping insertion in model container [2018-10-24 22:41:33,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:41:33" (1/1) ... [2018-10-24 22:41:33,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:41:33,276 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:41:34,006 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:41:34,014 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:41:34,522 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:41:34,546 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:41:34,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:34 WrapperNode [2018-10-24 22:41:34,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:41:34,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:41:34,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:41:34,548 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:41:34,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:34" (1/1) ... [2018-10-24 22:41:34,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:34" (1/1) ... [2018-10-24 22:41:34,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:41:34,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:41:34,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:41:34,900 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:41:34,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:34" (1/1) ... [2018-10-24 22:41:34,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:34" (1/1) ... [2018-10-24 22:41:34,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:34" (1/1) ... [2018-10-24 22:41:34,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:34" (1/1) ... [2018-10-24 22:41:34,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:34" (1/1) ... [2018-10-24 22:41:34,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:34" (1/1) ... [2018-10-24 22:41:35,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:34" (1/1) ... [2018-10-24 22:41:35,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:41:35,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:41:35,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:41:35,014 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:41:35,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:34" (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 22:41:35,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:41:35,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:41:35,078 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:41:35,078 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:41:35,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:41:35,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:41:35,079 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:41:35,079 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:41:39,949 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:41:39,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:41:39 BoogieIcfgContainer [2018-10-24 22:41:39,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:41:39,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:41:39,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:41:39,955 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:41:39,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:41:33" (1/3) ... [2018-10-24 22:41:39,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2721cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:41:39, skipping insertion in model container [2018-10-24 22:41:39,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:41:34" (2/3) ... [2018-10-24 22:41:39,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2721cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:41:39, skipping insertion in model container [2018-10-24 22:41:39,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:41:39" (3/3) ... [2018-10-24 22:41:39,961 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label27_false-unreach-call.c [2018-10-24 22:41:39,973 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:41:39,987 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:41:40,007 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:41:40,060 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:41:40,060 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:41:40,061 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:41:40,061 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:41:40,061 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:41:40,061 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:41:40,061 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:41:40,061 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:41:40,109 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-24 22:41:40,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-24 22:41:40,128 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:41:40,130 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:40,132 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:41:40,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:40,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1969334519, now seen corresponding path program 1 times [2018-10-24 22:41:40,143 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:41:40,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:40,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:41:40,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:40,207 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:41:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:41:41,087 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:41:41,275 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 22:41:41,277 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:41:41,278 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:41:41,278 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:41:41,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:41:41,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:41:41,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:41:41,307 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-24 22:41:43,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:41:43,613 INFO L93 Difference]: Finished difference Result 855 states and 1508 transitions. [2018-10-24 22:41:43,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:41:43,615 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 160 [2018-10-24 22:41:43,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:41:43,639 INFO L225 Difference]: With dead ends: 855 [2018-10-24 22:41:43,639 INFO L226 Difference]: Without dead ends: 541 [2018-10-24 22:41:43,647 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 22:41:43,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2018-10-24 22:41:43,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 527. [2018-10-24 22:41:43,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2018-10-24 22:41:43,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 901 transitions. [2018-10-24 22:41:43,763 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 901 transitions. Word has length 160 [2018-10-24 22:41:43,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:41:43,766 INFO L481 AbstractCegarLoop]: Abstraction has 527 states and 901 transitions. [2018-10-24 22:41:43,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:41:43,766 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 901 transitions. [2018-10-24 22:41:43,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-24 22:41:43,786 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:41:43,787 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:41:43,787 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:41:43,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:43,788 INFO L82 PathProgramCache]: Analyzing trace with hash -380074384, now seen corresponding path program 1 times [2018-10-24 22:41:43,788 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:41:43,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:43,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:41:43,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:43,793 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:41:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:41:44,145 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-24 22:41:44,283 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:41:44,284 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:41:44,284 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:41:44,284 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:41:44,286 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:41:44,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:41:44,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:41:44,287 INFO L87 Difference]: Start difference. First operand 527 states and 901 transitions. Second operand 6 states. [2018-10-24 22:41:47,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:41:47,947 INFO L93 Difference]: Finished difference Result 1590 states and 2790 transitions. [2018-10-24 22:41:47,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 22:41:47,953 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2018-10-24 22:41:47,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:41:47,967 INFO L225 Difference]: With dead ends: 1590 [2018-10-24 22:41:47,967 INFO L226 Difference]: Without dead ends: 1069 [2018-10-24 22:41:47,976 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 22:41:47,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2018-10-24 22:41:48,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1024. [2018-10-24 22:41:48,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2018-10-24 22:41:48,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1744 transitions. [2018-10-24 22:41:48,058 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1744 transitions. Word has length 170 [2018-10-24 22:41:48,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:41:48,059 INFO L481 AbstractCegarLoop]: Abstraction has 1024 states and 1744 transitions. [2018-10-24 22:41:48,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:41:48,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1744 transitions. [2018-10-24 22:41:48,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-24 22:41:48,063 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:41:48,063 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:41:48,064 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:41:48,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:48,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1995964296, now seen corresponding path program 1 times [2018-10-24 22:41:48,064 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:41:48,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:48,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:41:48,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:48,066 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:41:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:41:48,306 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:41:48,342 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:41:48,342 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:41:48,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:41:48,343 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:41:48,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:41:48,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:41:48,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:41:48,344 INFO L87 Difference]: Start difference. First operand 1024 states and 1744 transitions. Second operand 5 states. [2018-10-24 22:41:51,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:41:51,656 INFO L93 Difference]: Finished difference Result 3166 states and 5668 transitions. [2018-10-24 22:41:51,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:41:51,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2018-10-24 22:41:51,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:41:51,676 INFO L225 Difference]: With dead ends: 3166 [2018-10-24 22:41:51,676 INFO L226 Difference]: Without dead ends: 2148 [2018-10-24 22:41:51,684 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:41:51,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2018-10-24 22:41:51,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 2105. [2018-10-24 22:41:51,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2105 states. [2018-10-24 22:41:51,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2105 states to 2105 states and 3420 transitions. [2018-10-24 22:41:51,774 INFO L78 Accepts]: Start accepts. Automaton has 2105 states and 3420 transitions. Word has length 171 [2018-10-24 22:41:51,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:41:51,775 INFO L481 AbstractCegarLoop]: Abstraction has 2105 states and 3420 transitions. [2018-10-24 22:41:51,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:41:51,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2105 states and 3420 transitions. [2018-10-24 22:41:51,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-24 22:41:51,782 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:41:51,783 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:41:51,783 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:41:51,783 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:51,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1636143245, now seen corresponding path program 1 times [2018-10-24 22:41:51,784 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:41:51,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:51,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:41:51,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:51,785 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:41:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:41:52,127 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:41:52,127 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:41:52,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:41:52,128 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:41:52,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:41:52,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:41:52,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:41:52,130 INFO L87 Difference]: Start difference. First operand 2105 states and 3420 transitions. Second operand 3 states. [2018-10-24 22:41:53,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:41:53,774 INFO L93 Difference]: Finished difference Result 6093 states and 10292 transitions. [2018-10-24 22:41:53,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:41:53,775 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 173 [2018-10-24 22:41:53,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:41:53,798 INFO L225 Difference]: With dead ends: 6093 [2018-10-24 22:41:53,799 INFO L226 Difference]: Without dead ends: 3994 [2018-10-24 22:41:53,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:41:53,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2018-10-24 22:41:53,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3991. [2018-10-24 22:41:53,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3991 states. [2018-10-24 22:41:53,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3991 states to 3991 states and 6333 transitions. [2018-10-24 22:41:53,926 INFO L78 Accepts]: Start accepts. Automaton has 3991 states and 6333 transitions. Word has length 173 [2018-10-24 22:41:53,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:41:53,927 INFO L481 AbstractCegarLoop]: Abstraction has 3991 states and 6333 transitions. [2018-10-24 22:41:53,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:41:53,927 INFO L276 IsEmpty]: Start isEmpty. Operand 3991 states and 6333 transitions. [2018-10-24 22:41:53,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-10-24 22:41:53,938 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:41:53,938 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:41:53,938 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:41:53,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:53,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1602085481, now seen corresponding path program 1 times [2018-10-24 22:41:53,939 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:41:53,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:53,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:41:53,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:53,940 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:41:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:41:54,153 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:41:54,153 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:41:54,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:41:54,153 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:41:54,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:41:54,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:41:54,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:41:54,155 INFO L87 Difference]: Start difference. First operand 3991 states and 6333 transitions. Second operand 3 states. [2018-10-24 22:41:56,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:41:56,724 INFO L93 Difference]: Finished difference Result 11694 states and 19304 transitions. [2018-10-24 22:41:56,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:41:56,728 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2018-10-24 22:41:56,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:41:56,769 INFO L225 Difference]: With dead ends: 11694 [2018-10-24 22:41:56,769 INFO L226 Difference]: Without dead ends: 7709 [2018-10-24 22:41:56,793 INFO L605 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 [2018-10-24 22:41:56,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7709 states. [2018-10-24 22:41:57,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7709 to 7701. [2018-10-24 22:41:57,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7701 states. [2018-10-24 22:41:57,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7701 states to 7701 states and 12061 transitions. [2018-10-24 22:41:57,028 INFO L78 Accepts]: Start accepts. Automaton has 7701 states and 12061 transitions. Word has length 175 [2018-10-24 22:41:57,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:41:57,029 INFO L481 AbstractCegarLoop]: Abstraction has 7701 states and 12061 transitions. [2018-10-24 22:41:57,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:41:57,029 INFO L276 IsEmpty]: Start isEmpty. Operand 7701 states and 12061 transitions. [2018-10-24 22:41:57,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-24 22:41:57,048 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:41:57,048 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:57,049 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:41:57,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:41:57,049 INFO L82 PathProgramCache]: Analyzing trace with hash 535127932, now seen corresponding path program 1 times [2018-10-24 22:41:57,049 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:41:57,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:57,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:41:57,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:41:57,051 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:41:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:41:57,294 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:41:57,692 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:41:57,692 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:41:57,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:41:57,692 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:41:57,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:41:57,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:41:57,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:41:57,694 INFO L87 Difference]: Start difference. First operand 7701 states and 12061 transitions. Second operand 6 states. [2018-10-24 22:42:00,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:42:00,118 INFO L93 Difference]: Finished difference Result 15949 states and 26069 transitions. [2018-10-24 22:42:00,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:42:00,122 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 180 [2018-10-24 22:42:00,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:42:00,183 INFO L225 Difference]: With dead ends: 15949 [2018-10-24 22:42:00,183 INFO L226 Difference]: Without dead ends: 8254 [2018-10-24 22:42:00,227 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:42:00,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8254 states. [2018-10-24 22:42:00,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8254 to 8040. [2018-10-24 22:42:00,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8040 states. [2018-10-24 22:42:00,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8040 states to 8040 states and 11699 transitions. [2018-10-24 22:42:00,521 INFO L78 Accepts]: Start accepts. Automaton has 8040 states and 11699 transitions. Word has length 180 [2018-10-24 22:42:00,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:42:00,521 INFO L481 AbstractCegarLoop]: Abstraction has 8040 states and 11699 transitions. [2018-10-24 22:42:00,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:42:00,521 INFO L276 IsEmpty]: Start isEmpty. Operand 8040 states and 11699 transitions. [2018-10-24 22:42:00,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-24 22:42:00,540 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:42:00,540 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:42:00,541 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:42:00,541 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:42:00,541 INFO L82 PathProgramCache]: Analyzing trace with hash -655106826, now seen corresponding path program 1 times [2018-10-24 22:42:00,541 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:42:00,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:00,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:42:00,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:00,548 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:42:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:42:00,830 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:42:01,118 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:42:01,118 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:42:01,118 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:42:01,119 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 185 with the following transitions: [2018-10-24 22:42:01,123 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [10], [12], [13], [17], [21], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [741], [743], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:42:01,197 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:42:01,197 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:42:02,295 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:42:02,297 INFO L272 AbstractInterpreter]: Visited 161 different actions 161 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-24 22:42:02,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:42:02,341 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:42:03,223 INFO L232 lantSequenceWeakener]: Weakened 173 states. On average, predicates are now at 70.77% of their original sizes. [2018-10-24 22:42:03,223 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:42:03,837 INFO L413 sIntCurrentIteration]: We have 183 unified AI predicates [2018-10-24 22:42:03,838 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:42:03,839 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:42:03,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [5] total 20 [2018-10-24 22:42:03,840 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:42:03,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 22:42:03,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 22:42:03,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2018-10-24 22:42:03,841 INFO L87 Difference]: Start difference. First operand 8040 states and 11699 transitions. Second operand 17 states. [2018-10-24 22:43:15,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:43:15,938 INFO L93 Difference]: Finished difference Result 16284 states and 23697 transitions. [2018-10-24 22:43:15,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 22:43:15,938 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 184 [2018-10-24 22:43:15,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:43:15,969 INFO L225 Difference]: With dead ends: 16284 [2018-10-24 22:43:15,969 INFO L226 Difference]: Without dead ends: 8250 [2018-10-24 22:43:15,990 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 184 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2018-10-24 22:43:15,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8250 states. [2018-10-24 22:43:16,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8250 to 8248. [2018-10-24 22:43:16,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8248 states. [2018-10-24 22:43:16,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8248 states to 8248 states and 11917 transitions. [2018-10-24 22:43:16,191 INFO L78 Accepts]: Start accepts. Automaton has 8248 states and 11917 transitions. Word has length 184 [2018-10-24 22:43:16,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:43:16,192 INFO L481 AbstractCegarLoop]: Abstraction has 8248 states and 11917 transitions. [2018-10-24 22:43:16,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-24 22:43:16,192 INFO L276 IsEmpty]: Start isEmpty. Operand 8248 states and 11917 transitions. [2018-10-24 22:43:16,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-24 22:43:16,207 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:43:16,208 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:16,208 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:43:16,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:43:16,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1064481419, now seen corresponding path program 1 times [2018-10-24 22:43:16,209 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:43:16,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:43:16,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:43:16,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:43:16,210 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:43:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:43:16,454 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:43:16,455 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:43:16,455 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:43:16,455 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 194 with the following transitions: [2018-10-24 22:43:16,456 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [10], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [741], [743], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:43:16,465 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:43:16,466 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:43:19,294 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:43:19,294 INFO L272 AbstractInterpreter]: Visited 166 different actions 323 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-24 22:43:19,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:43:19,305 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:43:19,305 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:43:19,305 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:43:19,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:43:19,321 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:43:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:43:19,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:43:19,615 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 22:43:19,615 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:43:19,773 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 22:43:19,795 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:43:19,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [5] total 7 [2018-10-24 22:43:19,795 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:43:19,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:43:19,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:43:19,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:43:19,796 INFO L87 Difference]: Start difference. First operand 8248 states and 11917 transitions. Second operand 3 states. [2018-10-24 22:43:21,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:43:21,191 INFO L93 Difference]: Finished difference Result 16279 states and 23608 transitions. [2018-10-24 22:43:21,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:43:21,197 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2018-10-24 22:43:21,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:43:21,230 INFO L225 Difference]: With dead ends: 16279 [2018-10-24 22:43:21,230 INFO L226 Difference]: Without dead ends: 8245 [2018-10-24 22:43:21,246 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:43:21,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8245 states. [2018-10-24 22:43:21,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8245 to 8245. [2018-10-24 22:43:21,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8245 states. [2018-10-24 22:43:21,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8245 states to 8245 states and 11906 transitions. [2018-10-24 22:43:21,433 INFO L78 Accepts]: Start accepts. Automaton has 8245 states and 11906 transitions. Word has length 193 [2018-10-24 22:43:21,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:43:21,433 INFO L481 AbstractCegarLoop]: Abstraction has 8245 states and 11906 transitions. [2018-10-24 22:43:21,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:43:21,433 INFO L276 IsEmpty]: Start isEmpty. Operand 8245 states and 11906 transitions. [2018-10-24 22:43:21,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-24 22:43:21,449 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:43:21,450 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:21,450 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:43:21,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:43:21,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1328547031, now seen corresponding path program 1 times [2018-10-24 22:43:21,451 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:43:21,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:43:21,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:43:21,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:43:21,452 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:43:21,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:43:21,726 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 31 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 22:43:21,727 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:43:21,727 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:43:21,727 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 197 with the following transitions: [2018-10-24 22:43:21,728 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [79], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [741], [743], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:43:21,736 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:43:21,736 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:43:22,799 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:43:22,800 INFO L272 AbstractInterpreter]: Visited 164 different actions 322 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-24 22:43:22,801 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:43:22,801 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:43:24,500 INFO L232 lantSequenceWeakener]: Weakened 193 states. On average, predicates are now at 70.71% of their original sizes. [2018-10-24 22:43:24,501 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:43:24,913 INFO L413 sIntCurrentIteration]: We have 195 unified AI predicates [2018-10-24 22:43:24,914 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:43:24,914 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:43:24,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-10-24 22:43:24,915 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:43:24,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-24 22:43:24,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-24 22:43:24,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2018-10-24 22:43:24,916 INFO L87 Difference]: Start difference. First operand 8245 states and 11906 transitions. Second operand 19 states. [2018-10-24 22:44:56,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:44:56,351 INFO L93 Difference]: Finished difference Result 16490 states and 23898 transitions. [2018-10-24 22:44:56,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 22:44:56,351 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 196 [2018-10-24 22:44:56,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:44:56,383 INFO L225 Difference]: With dead ends: 16490 [2018-10-24 22:44:56,383 INFO L226 Difference]: Without dead ends: 8459 [2018-10-24 22:44:56,398 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 204 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2018-10-24 22:44:56,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8459 states. [2018-10-24 22:44:56,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8459 to 8456. [2018-10-24 22:44:56,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8456 states. [2018-10-24 22:44:56,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8456 states to 8456 states and 12134 transitions. [2018-10-24 22:44:56,586 INFO L78 Accepts]: Start accepts. Automaton has 8456 states and 12134 transitions. Word has length 196 [2018-10-24 22:44:56,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:44:56,587 INFO L481 AbstractCegarLoop]: Abstraction has 8456 states and 12134 transitions. [2018-10-24 22:44:56,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-24 22:44:56,587 INFO L276 IsEmpty]: Start isEmpty. Operand 8456 states and 12134 transitions. [2018-10-24 22:44:56,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-10-24 22:44:56,606 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:44:56,606 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:44:56,607 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:44:56,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:44:56,607 INFO L82 PathProgramCache]: Analyzing trace with hash 407818876, now seen corresponding path program 1 times [2018-10-24 22:44:56,608 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:44:56,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:44:56,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:44:56,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:44:56,609 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:44:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:44:56,944 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 54 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 22:44:56,944 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:44:56,944 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:44:56,945 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 214 with the following transitions: [2018-10-24 22:44:56,945 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [56], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [741], [743], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:44:56,953 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:44:56,953 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:45:01,941 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:45:01,941 INFO L272 AbstractInterpreter]: Visited 168 different actions 510 times. Merged at 8 different actions 31 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-24 22:45:01,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:45:01,947 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:45:01,947 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:45:01,947 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:45:01,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:45:01,957 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:45:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:45:02,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:45:02,342 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 22:45:02,342 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:45:02,778 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 54 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 22:45:02,802 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 22:45:02,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2018-10-24 22:45:02,802 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 22:45:02,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 22:45:02,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 22:45:02,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-24 22:45:02,804 INFO L87 Difference]: Start difference. First operand 8456 states and 12134 transitions. Second operand 8 states. [2018-10-24 22:45:08,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:45:08,741 INFO L93 Difference]: Finished difference Result 29972 states and 53799 transitions. [2018-10-24 22:45:08,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 22:45:08,745 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 213 [2018-10-24 22:45:08,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:45:08,902 INFO L225 Difference]: With dead ends: 29972 [2018-10-24 22:45:08,902 INFO L226 Difference]: Without dead ends: 21941 [2018-10-24 22:45:08,985 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2018-10-24 22:45:09,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21941 states. [2018-10-24 22:45:09,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21941 to 21465. [2018-10-24 22:45:09,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21465 states. [2018-10-24 22:45:09,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21465 states to 21465 states and 32924 transitions. [2018-10-24 22:45:09,972 INFO L78 Accepts]: Start accepts. Automaton has 21465 states and 32924 transitions. Word has length 213 [2018-10-24 22:45:09,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:45:09,973 INFO L481 AbstractCegarLoop]: Abstraction has 21465 states and 32924 transitions. [2018-10-24 22:45:09,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 22:45:09,973 INFO L276 IsEmpty]: Start isEmpty. Operand 21465 states and 32924 transitions. [2018-10-24 22:45:10,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-24 22:45:10,020 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:45:10,021 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:45:10,021 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:45:10,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:45:10,021 INFO L82 PathProgramCache]: Analyzing trace with hash 920797599, now seen corresponding path program 1 times [2018-10-24 22:45:10,022 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:45:10,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:45:10,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:45:10,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:45:10,023 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:45:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:45:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:45:10,603 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:45:10,603 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:45:10,603 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-10-24 22:45:10,604 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [147], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [741], [743], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:45:10,610 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:45:10,610 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:45:13,426 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:45:13,426 INFO L272 AbstractInterpreter]: Visited 165 different actions 322 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-24 22:45:13,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:45:13,433 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:45:13,433 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:45:13,433 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:45:13,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:45:13,443 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:45:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:45:13,629 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:45:13,830 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-24 22:45:13,830 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:45:14,123 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-24 22:45:14,150 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:45:14,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-10-24 22:45:14,150 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:45:14,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:45:14,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:45:14,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:45:14,151 INFO L87 Difference]: Start difference. First operand 21465 states and 32924 transitions. Second operand 3 states. [2018-10-24 22:45:16,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:45:16,177 INFO L93 Difference]: Finished difference Result 48195 states and 75066 transitions. [2018-10-24 22:45:16,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:45:16,178 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 223 [2018-10-24 22:45:16,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:45:16,334 INFO L225 Difference]: With dead ends: 48195 [2018-10-24 22:45:16,335 INFO L226 Difference]: Without dead ends: 27265 [2018-10-24 22:45:16,411 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:45:16,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27265 states. [2018-10-24 22:45:17,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27265 to 27262. [2018-10-24 22:45:17,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27262 states. [2018-10-24 22:45:17,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27262 states to 27262 states and 42354 transitions. [2018-10-24 22:45:17,753 INFO L78 Accepts]: Start accepts. Automaton has 27262 states and 42354 transitions. Word has length 223 [2018-10-24 22:45:17,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:45:17,754 INFO L481 AbstractCegarLoop]: Abstraction has 27262 states and 42354 transitions. [2018-10-24 22:45:17,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:45:17,754 INFO L276 IsEmpty]: Start isEmpty. Operand 27262 states and 42354 transitions. [2018-10-24 22:45:17,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-10-24 22:45:17,798 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:45:17,798 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:45:17,798 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:45:17,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:45:17,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1673146031, now seen corresponding path program 1 times [2018-10-24 22:45:17,799 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:45:17,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:45:17,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:45:17,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:45:17,800 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:45:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:45:18,159 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 85 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-24 22:45:18,160 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:45:18,160 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:45:18,160 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 232 with the following transitions: [2018-10-24 22:45:18,160 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [71], [75], [76], [79], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [741], [743], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:45:18,166 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:45:18,167 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:45:25,229 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:45:25,229 INFO L272 AbstractInterpreter]: Visited 166 different actions 496 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-24 22:45:25,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:45:25,235 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:45:25,235 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:45:25,235 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:45:25,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:45:25,245 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:45:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:45:25,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:45:25,601 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-10-24 22:45:25,601 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:45:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-10-24 22:45:25,846 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:45:25,846 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-10-24 22:45:25,846 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:45:25,847 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:45:25,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:45:25,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:45:25,847 INFO L87 Difference]: Start difference. First operand 27262 states and 42354 transitions. Second operand 3 states. [2018-10-24 22:45:28,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:45:28,048 INFO L93 Difference]: Finished difference Result 74359 states and 116439 transitions. [2018-10-24 22:45:28,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:45:28,049 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 231 [2018-10-24 22:45:28,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:45:28,331 INFO L225 Difference]: With dead ends: 74359 [2018-10-24 22:45:28,331 INFO L226 Difference]: Without dead ends: 47311 Received shutdown request... [2018-10-24 22:45:28,432 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 460 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:45:28,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47311 states. [2018-10-24 22:45:28,472 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:45:28,476 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:45:28,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:45:28 BoogieIcfgContainer [2018-10-24 22:45:28,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:45:28,478 INFO L168 Benchmark]: Toolchain (without parser) took 235301.54 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -843.6 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 22:45:28,479 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 22:45:28,483 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1368.55 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. [2018-10-24 22:45:28,484 INFO L168 Benchmark]: Boogie Procedure Inliner took 351.52 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -902.0 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:45:28,485 INFO L168 Benchmark]: Boogie Preprocessor took 113.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:45:28,487 INFO L168 Benchmark]: RCFGBuilder took 4937.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 256.2 MB). Peak memory consumption was 256.2 MB. Max. memory is 7.1 GB. [2018-10-24 22:45:28,488 INFO L168 Benchmark]: TraceAbstraction took 228525.53 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 2.3 GB in the end (delta: -298.6 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 22:45:28,497 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 1368.55 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 351.52 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -902.0 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4937.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 256.2 MB). Peak memory consumption was 256.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228525.53 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 2.3 GB in the end (delta: -298.6 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1494]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1494). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 228.4s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 192.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3474 SDtfs, 9252 SDslu, 3299 SDs, 0 SdLazy, 20168 SolverSat, 2153 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 152.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 2178 GetRequests, 2075 SyntacticMatches, 8 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27262occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 20.0s AbstIntTime, 6 AbstIntIterations, 2 AbstIntStrong, 0.9990112335884492 AbsIntWeakeningRatio, 0.335978835978836 AbsIntAvgWeakeningVarsNumRemoved, 28.071428571428573 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.8s AutomataMinimizationTime, 12 MinimizatonAttempts, 811 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 3129 NumberOfCodeBlocks, 3129 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 3969 ConstructedInterpolants, 0 QuantifiedInterpolants, 1455861 SizeOfPredicates, 5 NumberOfNonLiveVariables, 4462 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 20 InterpolantComputations, 12 PerfectInterpolantSequences, 1028/1079 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown