java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label07_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 02:10:38,086 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 02:10:38,088 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 02:10:38,100 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 02:10:38,100 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 02:10:38,101 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 02:10:38,103 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 02:10:38,104 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 02:10:38,106 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 02:10:38,107 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 02:10:38,108 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 02:10:38,108 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 02:10:38,109 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 02:10:38,110 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 02:10:38,111 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 02:10:38,112 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 02:10:38,113 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 02:10:38,115 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 02:10:38,117 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 02:10:38,119 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 02:10:38,120 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 02:10:38,121 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 02:10:38,124 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 02:10:38,130 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 02:10:38,130 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 02:10:38,131 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 02:10:38,132 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 02:10:38,132 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 02:10:38,147 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 02:10:38,148 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 02:10:38,149 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 02:10:38,149 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 02:10:38,149 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 02:10:38,149 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 02:10:38,149 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 02:10:38,150 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 02:10:38,150 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 02:10:38,150 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 02:10:38,150 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 02:10:38,150 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 02:10:38,151 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 02:10:38,151 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 02:10:38,151 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 02:10:38,152 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 02:10:38,152 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 02:10:38,152 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 02:10:38,152 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 02:10:38,152 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 02:10:38,153 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 02:10:38,153 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 02:10:38,153 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 02:10:38,153 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 02:10:38,153 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 02:10:38,154 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 02:10:38,154 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 02:10:38,154 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 02:10:38,154 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 02:10:38,154 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 02:10:38,154 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 02:10:38,155 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 02:10:38,155 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 02:10:38,155 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 02:10:38,215 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 02:10:38,229 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 02:10:38,233 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 02:10:38,234 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 02:10:38,235 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 02:10:38,235 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label07_true-unreach-call.c [2018-10-24 02:10:38,295 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7e4c3e0ce/ee571cbc6ff14ae6973f36d97e221c80/FLAGcea6faa95 [2018-10-24 02:10:39,053 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 02:10:39,054 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label07_true-unreach-call.c [2018-10-24 02:10:39,084 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7e4c3e0ce/ee571cbc6ff14ae6973f36d97e221c80/FLAGcea6faa95 [2018-10-24 02:10:39,105 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7e4c3e0ce/ee571cbc6ff14ae6973f36d97e221c80 [2018-10-24 02:10:39,120 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 02:10:39,124 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 02:10:39,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 02:10:39,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 02:10:39,133 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 02:10:39,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:10:39" (1/1) ... [2018-10-24 02:10:39,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e9da467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:10:39, skipping insertion in model container [2018-10-24 02:10:39,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:10:39" (1/1) ... [2018-10-24 02:10:39,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 02:10:39,301 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 02:10:40,492 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:10:40,498 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 02:10:40,923 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:10:40,953 INFO L193 MainTranslator]: Completed translation [2018-10-24 02:10:40,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:10:40 WrapperNode [2018-10-24 02:10:40,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 02:10:40,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 02:10:40,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 02:10:40,955 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 02:10:40,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:10:40" (1/1) ... [2018-10-24 02:10:41,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:10:40" (1/1) ... [2018-10-24 02:10:41,353 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 02:10:41,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 02:10:41,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 02:10:41,354 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 02:10:41,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:10:40" (1/1) ... [2018-10-24 02:10:41,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:10:40" (1/1) ... [2018-10-24 02:10:41,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:10:40" (1/1) ... [2018-10-24 02:10:41,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:10:40" (1/1) ... [2018-10-24 02:10:41,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:10:40" (1/1) ... [2018-10-24 02:10:41,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:10:40" (1/1) ... [2018-10-24 02:10:41,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:10:40" (1/1) ... [2018-10-24 02:10:41,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 02:10:41,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 02:10:41,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 02:10:41,565 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 02:10:41,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:10:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 02:10:41,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 02:10:41,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 02:10:41,638 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 02:10:41,638 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 02:10:41,638 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 02:10:41,639 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 02:10:41,639 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 02:10:41,639 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 02:10:41,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 02:10:41,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 02:10:41,640 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 02:10:41,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 02:10:50,454 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 02:10:50,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:10:50 BoogieIcfgContainer [2018-10-24 02:10:50,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 02:10:50,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 02:10:50,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 02:10:50,461 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 02:10:50,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:10:39" (1/3) ... [2018-10-24 02:10:50,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5caa736c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:10:50, skipping insertion in model container [2018-10-24 02:10:50,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:10:40" (2/3) ... [2018-10-24 02:10:50,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5caa736c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:10:50, skipping insertion in model container [2018-10-24 02:10:50,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:10:50" (3/3) ... [2018-10-24 02:10:50,465 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label07_true-unreach-call.c [2018-10-24 02:10:50,475 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 02:10:50,484 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 02:10:50,502 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 02:10:50,553 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 02:10:50,553 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 02:10:50,553 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 02:10:50,553 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 02:10:50,554 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 02:10:50,554 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 02:10:50,554 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 02:10:50,554 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 02:10:50,602 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 02:10:50,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-24 02:10:50,612 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:10:50,613 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] [2018-10-24 02:10:50,615 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:10:50,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:10:50,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1715798052, now seen corresponding path program 1 times [2018-10-24 02:10:50,623 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:10:50,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:10:50,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:10:50,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:10:50,673 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:10:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:10:51,065 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:10:51,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:10:51,191 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:10:51,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 02:10:51,192 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:10:51,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 02:10:51,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 02:10:51,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 02:10:51,223 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-24 02:10:57,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:10:57,490 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-24 02:10:57,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 02:10:57,492 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2018-10-24 02:10:57,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:10:57,535 INFO L225 Difference]: With dead ends: 2251 [2018-10-24 02:10:57,535 INFO L226 Difference]: Without dead ends: 1474 [2018-10-24 02:10:57,551 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 02:10:57,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-24 02:10:57,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-24 02:10:57,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-24 02:10:57,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2715 transitions. [2018-10-24 02:10:57,756 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2715 transitions. Word has length 54 [2018-10-24 02:10:57,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:10:57,757 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2715 transitions. [2018-10-24 02:10:57,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 02:10:57,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2715 transitions. [2018-10-24 02:10:57,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-24 02:10:57,770 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:10:57,771 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:10:57,771 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:10:57,771 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:10:57,772 INFO L82 PathProgramCache]: Analyzing trace with hash -487278161, now seen corresponding path program 1 times [2018-10-24 02:10:57,772 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:10:57,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:10:57,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:10:57,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:10:57,773 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:10:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:10:58,164 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:10:58,414 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:10:58,414 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:10:58,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 02:10:58,415 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:10:58,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 02:10:58,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 02:10:58,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 02:10:58,418 INFO L87 Difference]: Start difference. First operand 1474 states and 2715 transitions. Second operand 5 states. [2018-10-24 02:11:08,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:11:08,911 INFO L93 Difference]: Finished difference Result 4419 states and 8226 transitions. [2018-10-24 02:11:08,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:11:08,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2018-10-24 02:11:08,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:11:08,934 INFO L225 Difference]: With dead ends: 4419 [2018-10-24 02:11:08,934 INFO L226 Difference]: Without dead ends: 2951 [2018-10-24 02:11:08,940 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 02:11:08,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-10-24 02:11:09,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-10-24 02:11:09,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-10-24 02:11:09,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4901 transitions. [2018-10-24 02:11:09,033 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4901 transitions. Word has length 125 [2018-10-24 02:11:09,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:11:09,033 INFO L481 AbstractCegarLoop]: Abstraction has 2925 states and 4901 transitions. [2018-10-24 02:11:09,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 02:11:09,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4901 transitions. [2018-10-24 02:11:09,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-24 02:11:09,037 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:11:09,038 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:11:09,038 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:11:09,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:11:09,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1895018150, now seen corresponding path program 1 times [2018-10-24 02:11:09,038 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:11:09,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:11:09,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:11:09,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:11:09,040 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:11:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:11:09,288 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:11:09,288 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:11:09,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:11:09,288 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:11:09,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:11:09,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:11:09,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:11:09,290 INFO L87 Difference]: Start difference. First operand 2925 states and 4901 transitions. Second operand 6 states. [2018-10-24 02:11:22,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:11:22,768 INFO L93 Difference]: Finished difference Result 11199 states and 19606 transitions. [2018-10-24 02:11:22,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 02:11:22,770 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-10-24 02:11:22,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:11:22,843 INFO L225 Difference]: With dead ends: 11199 [2018-10-24 02:11:22,844 INFO L226 Difference]: Without dead ends: 8280 [2018-10-24 02:11:22,875 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 02:11:22,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8280 states. [2018-10-24 02:11:23,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8280 to 8202. [2018-10-24 02:11:23,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8202 states. [2018-10-24 02:11:23,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8202 states to 8202 states and 12123 transitions. [2018-10-24 02:11:23,130 INFO L78 Accepts]: Start accepts. Automaton has 8202 states and 12123 transitions. Word has length 130 [2018-10-24 02:11:23,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:11:23,131 INFO L481 AbstractCegarLoop]: Abstraction has 8202 states and 12123 transitions. [2018-10-24 02:11:23,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:11:23,131 INFO L276 IsEmpty]: Start isEmpty. Operand 8202 states and 12123 transitions. [2018-10-24 02:11:23,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-24 02:11:23,135 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:11:23,135 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:11:23,135 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:11:23,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:11:23,136 INFO L82 PathProgramCache]: Analyzing trace with hash -703578010, now seen corresponding path program 1 times [2018-10-24 02:11:23,136 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:11:23,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:11:23,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:11:23,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:11:23,138 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:11:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:11:23,394 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:11:23,695 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:11:23,695 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:11:23,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:11:23,696 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:11:23,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:11:23,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:11:23,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:11:23,697 INFO L87 Difference]: Start difference. First operand 8202 states and 12123 transitions. Second operand 6 states. [2018-10-24 02:11:30,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:11:30,774 INFO L93 Difference]: Finished difference Result 20964 states and 31521 transitions. [2018-10-24 02:11:30,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:11:30,776 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2018-10-24 02:11:30,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:11:30,857 INFO L225 Difference]: With dead ends: 20964 [2018-10-24 02:11:30,858 INFO L226 Difference]: Without dead ends: 12768 [2018-10-24 02:11:30,894 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 02:11:30,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12768 states. [2018-10-24 02:11:31,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12768 to 12710. [2018-10-24 02:11:31,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12710 states. [2018-10-24 02:11:31,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12710 states to 12710 states and 17130 transitions. [2018-10-24 02:11:31,206 INFO L78 Accepts]: Start accepts. Automaton has 12710 states and 17130 transitions. Word has length 162 [2018-10-24 02:11:31,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:11:31,207 INFO L481 AbstractCegarLoop]: Abstraction has 12710 states and 17130 transitions. [2018-10-24 02:11:31,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:11:31,207 INFO L276 IsEmpty]: Start isEmpty. Operand 12710 states and 17130 transitions. [2018-10-24 02:11:31,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-24 02:11:31,213 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:11:31,214 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:11:31,214 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:11:31,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:11:31,214 INFO L82 PathProgramCache]: Analyzing trace with hash 371580129, now seen corresponding path program 1 times [2018-10-24 02:11:31,215 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:11:31,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:11:31,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:11:31,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:11:31,216 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:11:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:11:31,492 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:11:31,493 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:11:31,493 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 02:11:31,494 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 242 with the following transitions: [2018-10-24 02:11:31,496 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], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1955], [1957], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2156], [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], [2264], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 02:11:31,563 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 02:11:31,563 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 02:11:34,205 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 02:11:34,207 INFO L272 AbstractInterpreter]: Visited 112 different actions 112 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 02:11:34,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:11:34,249 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 02:11:36,310 INFO L232 lantSequenceWeakener]: Weakened 233 states. On average, predicates are now at 78.06% of their original sizes. [2018-10-24 02:11:36,311 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 02:11:36,763 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 02:11:36,766 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 02:11:36,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 02:11:36,767 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:11:36,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 02:11:36,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 02:11:36,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 02:11:36,768 INFO L87 Difference]: Start difference. First operand 12710 states and 17130 transitions. Second operand 7 states. [2018-10-24 02:11:44,879 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 02:13:21,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:13:21,750 INFO L93 Difference]: Finished difference Result 26119 states and 35031 transitions. [2018-10-24 02:13:21,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:13:21,750 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2018-10-24 02:13:21,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:13:21,804 INFO L225 Difference]: With dead ends: 26119 [2018-10-24 02:13:21,804 INFO L226 Difference]: Without dead ends: 13415 [2018-10-24 02:13:21,850 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 241 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 02:13:21,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13415 states. [2018-10-24 02:13:22,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13415 to 13413. [2018-10-24 02:13:22,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13413 states. [2018-10-24 02:13:22,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13413 states to 13413 states and 17845 transitions. [2018-10-24 02:13:22,168 INFO L78 Accepts]: Start accepts. Automaton has 13413 states and 17845 transitions. Word has length 241 [2018-10-24 02:13:22,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:13:22,168 INFO L481 AbstractCegarLoop]: Abstraction has 13413 states and 17845 transitions. [2018-10-24 02:13:22,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 02:13:22,170 INFO L276 IsEmpty]: Start isEmpty. Operand 13413 states and 17845 transitions. [2018-10-24 02:13:22,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2018-10-24 02:13:22,183 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:13:22,184 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:13:22,185 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:13:22,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:13:22,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1681609374, now seen corresponding path program 1 times [2018-10-24 02:13:22,185 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:13:22,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:13:22,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:13:22,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:13:22,187 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:13:22,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:13:23,053 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 200 proven. 203 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 02:13:23,053 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:13:23,053 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 02:13:23,054 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 429 with the following transitions: [2018-10-24 02:13:23,054 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], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1955], [1957], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2156], [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], [2264], [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] [2018-10-24 02:13:23,069 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 02:13:23,069 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 02:13:34,829 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 02:13:34,830 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 02:13:34,836 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:13:34,836 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 02:13:39,423 INFO L232 lantSequenceWeakener]: Weakened 364 states. On average, predicates are now at 77.6% of their original sizes. [2018-10-24 02:13:39,424 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 02:14:05,383 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 02:14:05,384 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 02:14:05,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [11] total 27 [2018-10-24 02:14:05,384 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:14:05,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 02:14:05,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 02:14:05,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2018-10-24 02:14:05,386 INFO L87 Difference]: Start difference. First operand 13413 states and 17845 transitions. Second operand 18 states. Received shutdown request... [2018-10-24 02:14:14,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:14:14,414 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 02:14:14,419 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 02:14:14,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:14:14 BoogieIcfgContainer [2018-10-24 02:14:14,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 02:14:14,421 INFO L168 Benchmark]: Toolchain (without parser) took 215299.66 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 02:14:14,422 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-24 02:14:14,423 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1828.41 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 02:14:14,426 INFO L168 Benchmark]: Boogie Procedure Inliner took 399.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -946.3 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-24 02:14:14,431 INFO L168 Benchmark]: Boogie Preprocessor took 210.53 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: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2018-10-24 02:14:14,432 INFO L168 Benchmark]: RCFGBuilder took 8891.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 500.7 MB). Peak memory consumption was 500.7 MB. Max. memory is 7.1 GB. [2018-10-24 02:14:14,433 INFO L168 Benchmark]: TraceAbstraction took 203962.33 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.0 GB in the end (delta: -1.3 GB). Peak memory consumption was 566.2 MB. Max. memory is 7.1 GB. [2018-10-24 02:14:14,439 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1828.41 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 399.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -946.3 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 210.53 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: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8891.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 500.7 MB). Peak memory consumption was 500.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203962.33 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.0 GB in the end (delta: -1.3 GB). Peak memory consumption was 566.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 150]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 150). Cancelled while BasicCegarLoop was constructing difference of abstraction (13413states) and FLOYD_HOARE automaton (currently 7 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (95 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 203.8s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 151.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1352 SDtfs, 10618 SDslu, 885 SDs, 0 SdLazy, 20074 SolverSat, 4461 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 90.9s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 707 GetRequests, 525 SyntacticMatches, 134 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1096 ImplicationChecksByTransitivity, 27.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13413occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9963360710948872 AbsIntWeakeningRatio, 0.08695652173913043 AbsIntAvgWeakeningVarsNumRemoved, 337.62068965517244 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 164 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 1140 NumberOfCodeBlocks, 1140 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1134 ConstructedInterpolants, 0 QuantifiedInterpolants, 1890229 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 518/723 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown