java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label06_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:24:27,156 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:24:27,160 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:24:27,183 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:24:27,183 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:24:27,184 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:24:27,186 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:24:27,188 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:24:27,189 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:24:27,190 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:24:27,191 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:24:27,191 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:24:27,192 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:24:27,193 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:24:27,195 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:24:27,195 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:24:27,196 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:24:27,201 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:24:27,204 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:24:27,205 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:24:27,207 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:24:27,208 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:24:27,211 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:24:27,211 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:24:27,211 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:24:27,212 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:24:27,213 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:24:27,214 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:24:27,215 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:24:27,216 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:24:27,216 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:24:27,217 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:24:27,218 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:24:27,218 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:24:27,219 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:24:27,220 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:24:27,220 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 18:24:27,236 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:24:27,236 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:24:27,237 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:24:27,237 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:24:27,237 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:24:27,238 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:24:27,238 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:24:27,238 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:24:27,238 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:24:27,238 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:24:27,239 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:24:27,239 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:24:27,239 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:24:27,240 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:24:27,240 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:24:27,240 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:24:27,240 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:24:27,241 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:24:27,241 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:24:27,241 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:24:27,241 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:24:27,241 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:24:27,241 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:24:27,242 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:24:27,242 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:24:27,242 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:24:27,242 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:24:27,243 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:24:27,243 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:24:27,243 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:24:27,243 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:24:27,243 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:24:27,243 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:24:27,244 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:24:27,244 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:24:27,288 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:24:27,301 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:24:27,305 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:24:27,307 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:24:27,307 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:24:27,308 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label06_false-unreach-call.c [2018-11-07 18:24:27,371 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6fdd63a6/a6af1e992d624ed5a05d3086704ad943/FLAGda2a96aa2 [2018-11-07 18:24:28,152 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:24:28,153 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label06_false-unreach-call.c [2018-11-07 18:24:28,187 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6fdd63a6/a6af1e992d624ed5a05d3086704ad943/FLAGda2a96aa2 [2018-11-07 18:24:28,204 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6fdd63a6/a6af1e992d624ed5a05d3086704ad943 [2018-11-07 18:24:28,215 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:24:28,217 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:24:28,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:24:28,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:24:28,222 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:24:28,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:24:28" (1/1) ... [2018-11-07 18:24:28,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@710be24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:24:28, skipping insertion in model container [2018-11-07 18:24:28,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:24:28" (1/1) ... [2018-11-07 18:24:28,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:24:28,370 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:24:29,475 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:24:29,480 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:24:29,973 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:24:30,004 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:24:30,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:24:30 WrapperNode [2018-11-07 18:24:30,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:24:30,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:24:30,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:24:30,007 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:24:30,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:24:30" (1/1) ... [2018-11-07 18:24:30,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:24:30" (1/1) ... [2018-11-07 18:24:30,374 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:24:30,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:24:30,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:24:30,375 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:24:30,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:24:30" (1/1) ... [2018-11-07 18:24:30,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:24:30" (1/1) ... [2018-11-07 18:24:30,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:24:30" (1/1) ... [2018-11-07 18:24:30,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:24:30" (1/1) ... [2018-11-07 18:24:30,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:24:30" (1/1) ... [2018-11-07 18:24:30,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:24:30" (1/1) ... [2018-11-07 18:24:30,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:24:30" (1/1) ... [2018-11-07 18:24:30,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:24:30,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:24:30,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:24:30,622 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:24:30,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:24:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:24:30,700 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:24:30,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:24:30,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:24:30,701 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 18:24:30,701 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 18:24:30,701 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 18:24:30,701 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 18:24:30,702 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:24:30,702 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:24:30,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:24:30,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:24:30,703 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:24:30,703 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:24:38,721 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:24:38,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:24:38 BoogieIcfgContainer [2018-11-07 18:24:38,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:24:38,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:24:38,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:24:38,727 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:24:38,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:24:28" (1/3) ... [2018-11-07 18:24:38,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6c76f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:24:38, skipping insertion in model container [2018-11-07 18:24:38,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:24:30" (2/3) ... [2018-11-07 18:24:38,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6c76f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:24:38, skipping insertion in model container [2018-11-07 18:24:38,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:24:38" (3/3) ... [2018-11-07 18:24:38,731 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label06_false-unreach-call.c [2018-11-07 18:24:38,741 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:24:38,753 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:24:38,772 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:24:38,819 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:24:38,820 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:24:38,820 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:24:38,820 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:24:38,820 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:24:38,820 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:24:38,821 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:24:38,821 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:24:38,861 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 18:24:38,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-07 18:24:38,869 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:24:38,870 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] [2018-11-07 18:24:38,872 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:24:38,879 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:24:38,879 INFO L82 PathProgramCache]: Analyzing trace with hash 396758956, now seen corresponding path program 1 times [2018-11-07 18:24:38,882 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:24:38,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:24:38,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:24:38,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:24:38,945 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:24:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:24:39,326 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:24:39,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:24:39,430 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:24:39,430 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:24:39,430 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:24:39,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:24:39,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:24:39,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:24:39,458 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 18:24:46,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:24:46,804 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 18:24:46,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:24:46,807 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2018-11-07 18:24:46,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:24:46,853 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 18:24:46,853 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 18:24:46,871 INFO L604 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 [2018-11-07 18:24:46,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 18:24:47,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 18:24:47,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 18:24:47,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-11-07 18:24:47,054 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 32 [2018-11-07 18:24:47,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:24:47,055 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-11-07 18:24:47,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:24:47,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-11-07 18:24:47,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-11-07 18:24:47,062 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:24:47,063 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:24:47,063 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:24:47,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:24:47,064 INFO L82 PathProgramCache]: Analyzing trace with hash 642583282, now seen corresponding path program 1 times [2018-11-07 18:24:47,064 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:24:47,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:24:47,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:24:47,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:24:47,066 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:24:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:24:47,332 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:24:47,332 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:24:47,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:24:47,333 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:24:47,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:24:47,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:24:47,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:24:47,335 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-11-07 18:25:04,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:25:04,637 INFO L93 Difference]: Finished difference Result 5789 states and 11192 transitions. [2018-11-07 18:25:04,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:25:04,640 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2018-11-07 18:25:04,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:25:04,675 INFO L225 Difference]: With dead ends: 5789 [2018-11-07 18:25:04,675 INFO L226 Difference]: Without dead ends: 4321 [2018-11-07 18:25:04,685 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:25:04,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4321 states. [2018-11-07 18:25:04,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4321 to 4295. [2018-11-07 18:25:04,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4295 states. [2018-11-07 18:25:04,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4295 states to 4295 states and 7032 transitions. [2018-11-07 18:25:04,825 INFO L78 Accepts]: Start accepts. Automaton has 4295 states and 7032 transitions. Word has length 106 [2018-11-07 18:25:04,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:25:04,826 INFO L480 AbstractCegarLoop]: Abstraction has 4295 states and 7032 transitions. [2018-11-07 18:25:04,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:25:04,826 INFO L276 IsEmpty]: Start isEmpty. Operand 4295 states and 7032 transitions. [2018-11-07 18:25:04,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-11-07 18:25:04,837 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:25:04,837 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:25:04,837 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:25:04,841 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:25:04,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1007584981, now seen corresponding path program 1 times [2018-11-07 18:25:04,841 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:25:04,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:25:04,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:25:04,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:25:04,844 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:25:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:25:05,058 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:25:05,058 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:25:05,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 18:25:05,059 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:25:05,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 18:25:05,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 18:25:05,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 18:25:05,060 INFO L87 Difference]: Start difference. First operand 4295 states and 7032 transitions. Second operand 5 states. [2018-11-07 18:25:15,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:25:15,463 INFO L93 Difference]: Finished difference Result 14323 states and 23451 transitions. [2018-11-07 18:25:15,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 18:25:15,468 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2018-11-07 18:25:15,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:25:15,525 INFO L225 Difference]: With dead ends: 14323 [2018-11-07 18:25:15,526 INFO L226 Difference]: Without dead ends: 10034 [2018-11-07 18:25:15,548 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:25:15,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10034 states. [2018-11-07 18:25:15,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10034 to 9930. [2018-11-07 18:25:15,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9930 states. [2018-11-07 18:25:15,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9930 states to 9930 states and 14563 transitions. [2018-11-07 18:25:15,905 INFO L78 Accepts]: Start accepts. Automaton has 9930 states and 14563 transitions. Word has length 109 [2018-11-07 18:25:15,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:25:15,906 INFO L480 AbstractCegarLoop]: Abstraction has 9930 states and 14563 transitions. [2018-11-07 18:25:15,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 18:25:15,907 INFO L276 IsEmpty]: Start isEmpty. Operand 9930 states and 14563 transitions. [2018-11-07 18:25:15,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-11-07 18:25:15,913 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:25:15,914 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:25:15,914 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:25:15,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:25:15,915 INFO L82 PathProgramCache]: Analyzing trace with hash -2115491697, now seen corresponding path program 1 times [2018-11-07 18:25:15,915 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:25:15,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:25:15,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:25:15,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:25:15,916 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:25:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:25:16,107 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:25:16,107 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:25:16,108 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:25:16,108 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:25:16,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:25:16,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:25:16,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:25:16,109 INFO L87 Difference]: Start difference. First operand 9930 states and 14563 transitions. Second operand 4 states. [2018-11-07 18:25:23,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:25:23,438 INFO L93 Difference]: Finished difference Result 29889 states and 46737 transitions. [2018-11-07 18:25:23,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:25:23,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2018-11-07 18:25:23,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:25:23,542 INFO L225 Difference]: With dead ends: 29889 [2018-11-07 18:25:23,543 INFO L226 Difference]: Without dead ends: 19965 [2018-11-07 18:25:23,600 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:25:23,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19965 states. [2018-11-07 18:25:24,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19965 to 19962. [2018-11-07 18:25:24,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19962 states. [2018-11-07 18:25:24,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19962 states to 19962 states and 29023 transitions. [2018-11-07 18:25:24,232 INFO L78 Accepts]: Start accepts. Automaton has 19962 states and 29023 transitions. Word has length 139 [2018-11-07 18:25:24,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:25:24,233 INFO L480 AbstractCegarLoop]: Abstraction has 19962 states and 29023 transitions. [2018-11-07 18:25:24,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:25:24,233 INFO L276 IsEmpty]: Start isEmpty. Operand 19962 states and 29023 transitions. [2018-11-07 18:25:24,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-11-07 18:25:24,238 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:25:24,239 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:25:24,239 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:25:24,239 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:25:24,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1955458851, now seen corresponding path program 1 times [2018-11-07 18:25:24,240 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:25:24,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:25:24,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:25:24,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:25:24,241 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:25:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:25:24,532 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:25:24,787 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 50 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:25:24,787 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:25:24,787 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:25:24,788 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 180 with the following transitions: [2018-11-07 18:25:24,793 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1779], [1781], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 18:25:24,855 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:25:24,855 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:25:25,379 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:25:25,380 INFO L272 AbstractInterpreter]: Visited 82 different actions 82 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 18:25:25,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:25:25,430 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:25:25,877 INFO L227 lantSequenceWeakener]: Weakened 170 states. On average, predicates are now at 77.63% of their original sizes. [2018-11-07 18:25:25,877 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:25:26,028 INFO L415 sIntCurrentIteration]: We unified 178 AI predicates to 178 [2018-11-07 18:25:26,029 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:25:26,030 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:25:26,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-11-07 18:25:26,030 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:25:26,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 18:25:26,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 18:25:26,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 18:25:26,032 INFO L87 Difference]: Start difference. First operand 19962 states and 29023 transitions. Second operand 7 states. [2018-11-07 18:25:33,778 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:25:51,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:25:51,688 INFO L93 Difference]: Finished difference Result 40623 states and 58961 transitions. [2018-11-07 18:25:51,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:25:51,689 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2018-11-07 18:25:51,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:25:51,757 INFO L225 Difference]: With dead ends: 40623 [2018-11-07 18:25:51,757 INFO L226 Difference]: Without dead ends: 20667 [2018-11-07 18:25:51,805 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 179 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:25:51,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20667 states. [2018-11-07 18:25:52,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20667 to 20665. [2018-11-07 18:25:52,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20665 states. [2018-11-07 18:25:52,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20665 states to 20665 states and 29735 transitions. [2018-11-07 18:25:52,263 INFO L78 Accepts]: Start accepts. Automaton has 20665 states and 29735 transitions. Word has length 179 [2018-11-07 18:25:52,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:25:52,264 INFO L480 AbstractCegarLoop]: Abstraction has 20665 states and 29735 transitions. [2018-11-07 18:25:52,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 18:25:52,265 INFO L276 IsEmpty]: Start isEmpty. Operand 20665 states and 29735 transitions. [2018-11-07 18:25:52,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-11-07 18:25:52,276 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:25:52,276 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:25:52,277 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:25:52,277 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:25:52,277 INFO L82 PathProgramCache]: Analyzing trace with hash 2147140794, now seen corresponding path program 1 times [2018-11-07 18:25:52,277 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:25:52,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:25:52,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:25:52,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:25:52,282 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:25:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:25:52,857 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 18:25:53,063 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 18:25:53,275 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 18:25:53,609 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 18:25:53,909 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 134 proven. 153 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:25:53,910 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:25:53,910 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:25:53,910 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 367 with the following transitions: [2018-11-07 18:25:53,911 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1779], [1781], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 18:25:53,920 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:25:53,920 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:25:55,091 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:25:55,091 INFO L272 AbstractInterpreter]: Visited 196 different actions 388 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:25:55,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:25:55,125 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:25:56,135 INFO L227 lantSequenceWeakener]: Weakened 41 states. On average, predicates are now at 77.94% of their original sizes. [2018-11-07 18:25:56,136 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:25:56,620 INFO L415 sIntCurrentIteration]: We unified 365 AI predicates to 365 [2018-11-07 18:25:56,620 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:25:56,620 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:25:56,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2018-11-07 18:25:56,621 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:25:56,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 18:25:56,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 18:25:56,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-11-07 18:25:56,622 INFO L87 Difference]: Start difference. First operand 20665 states and 29735 transitions. Second operand 16 states. [2018-11-07 18:26:26,735 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:27:10,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:27:10,698 INFO L93 Difference]: Finished difference Result 43104 states and 61924 transitions. [2018-11-07 18:27:10,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 18:27:10,698 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 366 [2018-11-07 18:27:10,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:27:10,761 INFO L225 Difference]: With dead ends: 43104 [2018-11-07 18:27:10,761 INFO L226 Difference]: Without dead ends: 23148 [2018-11-07 18:27:10,790 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 376 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2018-11-07 18:27:10,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23148 states. [2018-11-07 18:27:11,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23148 to 22911. [2018-11-07 18:27:11,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22911 states. [2018-11-07 18:27:11,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22911 states to 22911 states and 32024 transitions. [2018-11-07 18:27:11,163 INFO L78 Accepts]: Start accepts. Automaton has 22911 states and 32024 transitions. Word has length 366 [2018-11-07 18:27:11,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:27:11,163 INFO L480 AbstractCegarLoop]: Abstraction has 22911 states and 32024 transitions. [2018-11-07 18:27:11,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 18:27:11,164 INFO L276 IsEmpty]: Start isEmpty. Operand 22911 states and 32024 transitions. [2018-11-07 18:27:11,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 708 [2018-11-07 18:27:11,192 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:27:11,193 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:27:11,194 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:27:11,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:27:11,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1262244181, now seen corresponding path program 1 times [2018-11-07 18:27:11,194 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:27:11,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:27:11,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:27:11,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:27:11,196 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:27:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:27:11,764 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:27:12,485 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 81 proven. 139 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 18:27:12,485 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:27:12,486 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:27:12,486 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 708 with the following transitions: [2018-11-07 18:27:12,488 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1779], [1781], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-07 18:27:12,512 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:27:12,512 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:27:14,584 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:27:14,584 INFO L272 AbstractInterpreter]: Visited 537 different actions 1070 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:27:14,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:27:14,592 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:27:15,616 INFO L227 lantSequenceWeakener]: Weakened 398 states. On average, predicates are now at 77.6% of their original sizes. [2018-11-07 18:27:15,617 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:27:18,096 INFO L415 sIntCurrentIteration]: We unified 706 AI predicates to 706 [2018-11-07 18:27:18,096 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:27:18,096 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:27:18,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [30] imperfect sequences [5] total 33 [2018-11-07 18:27:18,097 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:27:18,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-11-07 18:27:18,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-11-07 18:27:18,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2018-11-07 18:27:18,099 INFO L87 Difference]: Start difference. First operand 22911 states and 32024 transitions. Second operand 30 states. Received shutdown request... [2018-11-07 18:27:56,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-07 18:27:56,413 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:27:56,418 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:27:56,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:27:56 BoogieIcfgContainer [2018-11-07 18:27:56,419 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:27:56,420 INFO L168 Benchmark]: Toolchain (without parser) took 208203.85 ms. Allocated memory was 1.5 GB in the beginning and 5.4 GB in the end (delta: 3.9 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -395.6 MB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-11-07 18:27:56,421 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 18:27:56,421 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1788.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-07 18:27:56,422 INFO L168 Benchmark]: Boogie Procedure Inliner took 367.34 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 731.9 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -921.8 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 18:27:56,423 INFO L168 Benchmark]: Boogie Preprocessor took 246.63 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2018-11-07 18:27:56,424 INFO L168 Benchmark]: RCFGBuilder took 8100.87 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 508.0 MB). Peak memory consumption was 508.0 MB. Max. memory is 7.1 GB. [2018-11-07 18:27:56,425 INFO L168 Benchmark]: TraceAbstraction took 197695.73 ms. Allocated memory was 2.2 GB in the beginning and 5.4 GB in the end (delta: 3.2 GB). Free memory was 1.6 GB in the beginning and 1.8 GB in the end (delta: -144.6 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-11-07 18:27:56,430 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1788.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 367.34 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 731.9 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -921.8 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 246.63 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8100.87 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 508.0 MB). Peak memory consumption was 508.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 197695.73 ms. Allocated memory was 2.2 GB in the beginning and 5.4 GB in the end (delta: 3.2 GB). Free memory was 1.6 GB in the beginning and 1.8 GB in the end (delta: -144.6 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 84). Cancelled while BasicCegarLoop was constructing difference of abstraction (22911states) and FLOYD_HOARE automaton (currently 25 states, 30 states before enhancement),while ReachableStatesComputation was computing reachable states (1643 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 197.6s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 181.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3413 SDtfs, 18682 SDslu, 1097 SDs, 0 SdLazy, 40717 SolverSat, 5911 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 86.0s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1310 GetRequests, 1132 SyntacticMatches, 83 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 980 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22911occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.9s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9976575350248204 AbsIntWeakeningRatio, 0.07846277021617294 AbsIntAvgWeakeningVarsNumRemoved, 12.138510808646917 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 372 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 1638 NumberOfCodeBlocks, 1638 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1631 ConstructedInterpolants, 0 QuantifiedInterpolants, 2597978 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 422/779 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown