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/Problem10_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 00:59:50,300 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 00:59:50,302 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 00:59:50,314 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 00:59:50,315 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 00:59:50,316 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 00:59:50,317 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 00:59:50,319 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 00:59:50,320 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 00:59:50,321 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 00:59:50,322 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 00:59:50,322 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 00:59:50,323 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 00:59:50,324 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 00:59:50,325 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 00:59:50,326 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 00:59:50,327 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 00:59:50,329 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 00:59:50,331 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 00:59:50,333 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 00:59:50,334 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 00:59:50,335 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 00:59:50,337 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 00:59:50,346 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 00:59:50,347 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 00:59:50,348 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 00:59:50,348 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 00:59:50,349 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 00:59:50,374 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 00:59:50,374 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 00:59:50,375 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 00:59:50,375 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 00:59:50,375 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 00:59:50,376 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 00:59:50,376 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 00:59:50,376 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 00:59:50,376 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 00:59:50,376 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 00:59:50,377 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 00:59:50,377 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 00:59:50,377 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 00:59:50,380 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 00:59:50,380 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 00:59:50,380 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 00:59:50,380 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 00:59:50,381 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 00:59:50,381 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 00:59:50,381 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 00:59:50,381 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 00:59:50,381 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 00:59:50,381 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 00:59:50,383 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 00:59:50,383 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 00:59:50,383 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 00:59:50,384 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 00:59:50,384 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 00:59:50,384 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 00:59:50,384 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 00:59:50,384 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 00:59:50,384 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 00:59:50,385 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 00:59:50,386 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 00:59:50,440 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 00:59:50,457 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 00:59:50,460 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 00:59:50,461 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 00:59:50,461 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 00:59:50,462 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label59_true-unreach-call.c [2018-10-24 00:59:50,523 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4406ca4a0/be63c1f4bec6477683e4b2a02e1fc830/FLAGb3e2fc33e [2018-10-24 00:59:51,038 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 00:59:51,040 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label59_true-unreach-call.c [2018-10-24 00:59:51,062 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4406ca4a0/be63c1f4bec6477683e4b2a02e1fc830/FLAGb3e2fc33e [2018-10-24 00:59:51,081 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4406ca4a0/be63c1f4bec6477683e4b2a02e1fc830 [2018-10-24 00:59:51,091 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 00:59:51,093 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 00:59:51,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 00:59:51,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 00:59:51,098 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 00:59:51,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:59:51" (1/1) ... [2018-10-24 00:59:51,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a01a5bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:59:51, skipping insertion in model container [2018-10-24 00:59:51,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:59:51" (1/1) ... [2018-10-24 00:59:51,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 00:59:51,167 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 00:59:51,588 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 00:59:51,592 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 00:59:51,745 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 00:59:51,770 INFO L193 MainTranslator]: Completed translation [2018-10-24 00:59:51,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:59:51 WrapperNode [2018-10-24 00:59:51,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 00:59:51,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 00:59:51,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 00:59:51,773 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 00:59:51,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:59:51" (1/1) ... [2018-10-24 00:59:51,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:59:51" (1/1) ... [2018-10-24 00:59:52,036 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 00:59:52,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 00:59:52,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 00:59:52,037 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 00:59:52,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:59:51" (1/1) ... [2018-10-24 00:59:52,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:59:51" (1/1) ... [2018-10-24 00:59:52,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:59:51" (1/1) ... [2018-10-24 00:59:52,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:59:51" (1/1) ... [2018-10-24 00:59:52,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:59:51" (1/1) ... [2018-10-24 00:59:52,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:59:51" (1/1) ... [2018-10-24 00:59:52,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:59:51" (1/1) ... [2018-10-24 00:59:52,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 00:59:52,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 00:59:52,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 00:59:52,195 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 00:59:52,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:59:51" (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 00:59:52,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 00:59:52,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 00:59:52,270 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 00:59:52,270 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 00:59:52,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 00:59:52,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 00:59:52,271 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 00:59:52,271 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 00:59:55,606 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 00:59:55,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:59:55 BoogieIcfgContainer [2018-10-24 00:59:55,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 00:59:55,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 00:59:55,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 00:59:55,611 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 00:59:55,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:59:51" (1/3) ... [2018-10-24 00:59:55,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781db5ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:59:55, skipping insertion in model container [2018-10-24 00:59:55,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:59:51" (2/3) ... [2018-10-24 00:59:55,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781db5ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:59:55, skipping insertion in model container [2018-10-24 00:59:55,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:59:55" (3/3) ... [2018-10-24 00:59:55,615 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label59_true-unreach-call.c [2018-10-24 00:59:55,624 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 00:59:55,632 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 00:59:55,647 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 00:59:55,692 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 00:59:55,692 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 00:59:55,693 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 00:59:55,693 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 00:59:55,693 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 00:59:55,695 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 00:59:55,695 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 00:59:55,695 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 00:59:55,727 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-24 00:59:55,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-24 00:59:55,739 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:59:55,740 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 00:59:55,743 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:59:55,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:59:55,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1019321972, now seen corresponding path program 1 times [2018-10-24 00:59:55,751 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:59:55,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:59:55,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:59:55,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:59:55,797 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:59:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:59:56,341 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 5 [2018-10-24 00:59:56,375 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 00:59:56,377 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 00:59:56,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 00:59:56,378 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:59:56,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 00:59:56,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 00:59:56,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 00:59:56,405 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2018-10-24 00:59:59,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:59:59,104 INFO L93 Difference]: Finished difference Result 737 states and 1298 transitions. [2018-10-24 00:59:59,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 00:59:59,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2018-10-24 00:59:59,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:59:59,129 INFO L225 Difference]: With dead ends: 737 [2018-10-24 00:59:59,130 INFO L226 Difference]: Without dead ends: 515 [2018-10-24 00:59:59,138 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 00:59:59,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2018-10-24 00:59:59,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 356. [2018-10-24 00:59:59,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-24 00:59:59,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 613 transitions. [2018-10-24 00:59:59,231 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 613 transitions. Word has length 72 [2018-10-24 00:59:59,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:59:59,232 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 613 transitions. [2018-10-24 00:59:59,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 00:59:59,232 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 613 transitions. [2018-10-24 00:59:59,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-24 00:59:59,252 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:59:59,253 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 00:59:59,253 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:59:59,254 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:59:59,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1630388773, now seen corresponding path program 1 times [2018-10-24 00:59:59,254 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:59:59,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:59:59,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:59:59,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:59:59,257 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:59:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:59:59,772 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 57 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 00:59:59,772 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 00:59:59,772 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 00:59:59,773 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 144 with the following transitions: [2018-10-24 00:59:59,775 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [477], [479], [482], [490], [495], [498], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 00:59:59,849 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 00:59:59,849 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:00:01,994 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:00:13,633 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 01:00:13,635 INFO L272 AbstractInterpreter]: Visited 79 different actions 443 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 01:00:13,642 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:00:13,644 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 01:00:13,644 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:00:13,645 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 01:00:13,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:00:13,654 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 01:00:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:00:13,732 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 01:00:13,973 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:00:13,973 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 01:00:14,177 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:00:14,199 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:00:14,199 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2018-10-24 01:00:14,199 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:00:14,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 01:00:14,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 01:00:14,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:00:14,202 INFO L87 Difference]: Start difference. First operand 356 states and 613 transitions. Second operand 3 states. [2018-10-24 01:00:15,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:00:15,381 INFO L93 Difference]: Finished difference Result 994 states and 1782 transitions. [2018-10-24 01:00:15,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 01:00:15,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2018-10-24 01:00:15,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:00:15,391 INFO L225 Difference]: With dead ends: 994 [2018-10-24 01:00:15,391 INFO L226 Difference]: Without dead ends: 644 [2018-10-24 01:00:15,395 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 286 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:00:15,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2018-10-24 01:00:15,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 644. [2018-10-24 01:00:15,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2018-10-24 01:00:15,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1034 transitions. [2018-10-24 01:00:15,438 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1034 transitions. Word has length 143 [2018-10-24 01:00:15,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:00:15,439 INFO L481 AbstractCegarLoop]: Abstraction has 644 states and 1034 transitions. [2018-10-24 01:00:15,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 01:00:15,439 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1034 transitions. [2018-10-24 01:00:15,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-24 01:00:15,444 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:00:15,445 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 01:00:15,445 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:00:15,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:00:15,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1733767164, now seen corresponding path program 1 times [2018-10-24 01:00:15,446 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:00:15,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:00:15,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:00:15,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:00:15,447 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:00:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:00:15,782 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:00:16,191 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:00:16,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:00:16,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:00:16,192 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:00:16,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:00:16,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:00:16,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:00:16,193 INFO L87 Difference]: Start difference. First operand 644 states and 1034 transitions. Second operand 6 states. [2018-10-24 01:00:19,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:00:19,500 INFO L93 Difference]: Finished difference Result 1847 states and 3197 transitions. [2018-10-24 01:00:19,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:00:19,501 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-10-24 01:00:19,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:00:19,518 INFO L225 Difference]: With dead ends: 1847 [2018-10-24 01:00:19,518 INFO L226 Difference]: Without dead ends: 1209 [2018-10-24 01:00:19,525 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:00:19,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2018-10-24 01:00:19,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1185. [2018-10-24 01:00:19,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1185 states. [2018-10-24 01:00:19,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1872 transitions. [2018-10-24 01:00:19,594 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1872 transitions. Word has length 154 [2018-10-24 01:00:19,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:00:19,595 INFO L481 AbstractCegarLoop]: Abstraction has 1185 states and 1872 transitions. [2018-10-24 01:00:19,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:00:19,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1872 transitions. [2018-10-24 01:00:19,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-24 01:00:19,602 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:00:19,602 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 01:00:19,603 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:00:19,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:00:19,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1561785849, now seen corresponding path program 1 times [2018-10-24 01:00:19,603 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:00:19,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:00:19,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:00:19,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:00:19,605 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:00:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:00:19,873 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:00:19,874 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:00:19,874 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:00:19,874 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:00:19,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:00:19,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:00:19,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:00:19,875 INFO L87 Difference]: Start difference. First operand 1185 states and 1872 transitions. Second operand 4 states. [2018-10-24 01:00:23,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:00:23,733 INFO L93 Difference]: Finished difference Result 2364 states and 3744 transitions. [2018-10-24 01:00:23,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:00:23,733 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 201 [2018-10-24 01:00:23,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:00:23,741 INFO L225 Difference]: With dead ends: 2364 [2018-10-24 01:00:23,742 INFO L226 Difference]: Without dead ends: 1185 [2018-10-24 01:00:23,748 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:00:23,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2018-10-24 01:00:23,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1185. [2018-10-24 01:00:23,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1185 states. [2018-10-24 01:00:23,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1698 transitions. [2018-10-24 01:00:23,780 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1698 transitions. Word has length 201 [2018-10-24 01:00:23,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:00:23,781 INFO L481 AbstractCegarLoop]: Abstraction has 1185 states and 1698 transitions. [2018-10-24 01:00:23,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:00:23,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1698 transitions. [2018-10-24 01:00:23,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-24 01:00:23,786 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:00:23,787 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 01:00:23,787 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:00:23,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:00:23,787 INFO L82 PathProgramCache]: Analyzing trace with hash -809847816, now seen corresponding path program 1 times [2018-10-24 01:00:23,788 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:00:23,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:00:23,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:00:23,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:00:23,789 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:00:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:00:24,048 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:00:24,048 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:00:24,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:00:24,049 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:00:24,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:00:24,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:00:24,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:00:24,050 INFO L87 Difference]: Start difference. First operand 1185 states and 1698 transitions. Second operand 6 states. [2018-10-24 01:00:25,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:00:25,350 INFO L93 Difference]: Finished difference Result 3008 states and 4520 transitions. [2018-10-24 01:00:25,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:00:25,353 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 204 [2018-10-24 01:00:25,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:00:25,365 INFO L225 Difference]: With dead ends: 3008 [2018-10-24 01:00:25,366 INFO L226 Difference]: Without dead ends: 1829 [2018-10-24 01:00:25,371 INFO L605 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 [2018-10-24 01:00:25,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2018-10-24 01:00:25,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1793. [2018-10-24 01:00:25,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1793 states. [2018-10-24 01:00:25,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2543 transitions. [2018-10-24 01:00:25,433 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2543 transitions. Word has length 204 [2018-10-24 01:00:25,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:00:25,434 INFO L481 AbstractCegarLoop]: Abstraction has 1793 states and 2543 transitions. [2018-10-24 01:00:25,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:00:25,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2543 transitions. [2018-10-24 01:00:25,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-24 01:00:25,441 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:00:25,441 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 01:00:25,441 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:00:25,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:00:25,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1298522180, now seen corresponding path program 1 times [2018-10-24 01:00:25,442 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:00:25,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:00:25,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:00:25,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:00:25,443 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:00:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:00:25,661 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 130 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 01:00:25,662 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:00:25,662 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:00:25,662 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 225 with the following transitions: [2018-10-24 01:00:25,663 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [477], [479], [482], [490], [494], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [542], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 01:00:25,668 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:00:25,669 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:00:27,991 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:00:28,071 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:00:28,071 INFO L272 AbstractInterpreter]: Visited 87 different actions 87 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 01:00:28,110 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:00:28,110 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:00:31,266 INFO L232 lantSequenceWeakener]: Weakened 203 states. On average, predicates are now at 74.19% of their original sizes. [2018-10-24 01:00:31,266 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:00:34,341 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:00:34,342 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:00:34,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-10-24 01:00:34,343 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:00:34,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 01:00:34,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 01:00:34,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-24 01:00:34,344 INFO L87 Difference]: Start difference. First operand 1793 states and 2543 transitions. Second operand 10 states. [2018-10-24 01:01:14,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:01:14,208 INFO L93 Difference]: Finished difference Result 3729 states and 5328 transitions. [2018-10-24 01:01:14,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 01:01:14,208 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 224 [2018-10-24 01:01:14,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:01:14,218 INFO L225 Difference]: With dead ends: 3729 [2018-10-24 01:01:14,219 INFO L226 Difference]: Without dead ends: 1942 [2018-10-24 01:01:14,226 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 227 GetRequests, 204 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-10-24 01:01:14,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2018-10-24 01:01:14,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1937. [2018-10-24 01:01:14,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1937 states. [2018-10-24 01:01:14,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 2695 transitions. [2018-10-24 01:01:14,309 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 2695 transitions. Word has length 224 [2018-10-24 01:01:14,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:01:14,309 INFO L481 AbstractCegarLoop]: Abstraction has 1937 states and 2695 transitions. [2018-10-24 01:01:14,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 01:01:14,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 2695 transitions. [2018-10-24 01:01:14,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-24 01:01:14,316 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:01:14,316 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 01:01:14,317 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:01:14,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:01:14,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1893058164, now seen corresponding path program 1 times [2018-10-24 01:01:14,317 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:01:14,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:01:14,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:01:14,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:01:14,319 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:01:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:01:14,618 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 134 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:01:14,618 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:01:14,619 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:01:14,619 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 231 with the following transitions: [2018-10-24 01:01:14,619 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [477], [479], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 01:01:14,623 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:01:14,624 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:01:15,854 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:01:27,989 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 01:01:27,989 INFO L272 AbstractInterpreter]: Visited 96 different actions 545 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 01:01:27,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:01:27,996 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 01:01:27,996 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:01:27,996 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 01:01:28,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:01:28,009 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 01:01:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:01:28,082 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 01:01:43,583 WARN L179 SmtUtils]: Spent 15.16 s on a formula simplification. DAG size of input: 113 DAG size of output: 48 [2018-10-24 01:01:43,689 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 133 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:01:43,690 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 01:01:43,880 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2018-10-24 01:01:44,165 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 133 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:01:44,188 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 01:01:44,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 14 [2018-10-24 01:01:44,188 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 01:01:44,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 01:01:44,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 01:01:44,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2018-10-24 01:01:44,191 INFO L87 Difference]: Start difference. First operand 1937 states and 2695 transitions. Second operand 12 states. [2018-10-24 01:01:52,597 WARN L179 SmtUtils]: Spent 5.99 s on a formula simplification that was a NOOP. DAG size: 53 [2018-10-24 01:01:59,834 WARN L179 SmtUtils]: Spent 7.04 s on a formula simplification that was a NOOP. DAG size: 57 [2018-10-24 01:02:11,481 WARN L179 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 57 DAG size of output: 26 [2018-10-24 01:02:15,687 WARN L179 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 54 DAG size of output: 28 [2018-10-24 01:02:22,921 WARN L179 SmtUtils]: Spent 7.01 s on a formula simplification that was a NOOP. DAG size: 53 [2018-10-24 01:02:33,518 WARN L179 SmtUtils]: Spent 10.32 s on a formula simplification that was a NOOP. DAG size: 55 [2018-10-24 01:02:51,163 WARN L179 SmtUtils]: Spent 17.54 s on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2018-10-24 01:03:01,746 WARN L179 SmtUtils]: Spent 10.33 s on a formula simplification. DAG size of input: 61 DAG size of output: 28 [2018-10-24 01:03:15,739 WARN L179 SmtUtils]: Spent 12.21 s on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2018-10-24 01:03:22,297 WARN L179 SmtUtils]: Spent 6.21 s on a formula simplification that was a NOOP. DAG size: 56 [2018-10-24 01:03:40,607 WARN L179 SmtUtils]: Spent 17.95 s on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2018-10-24 01:03:46,951 WARN L179 SmtUtils]: Spent 6.13 s on a formula simplification that was a NOOP. DAG size: 53 Received shutdown request... [2018-10-24 01:03:54,749 WARN L187 SmtUtils]: Removed 3 from assertion stack [2018-10-24 01:03:54,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-24 01:03:54,750 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:03:54,754 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:03:54,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:03:54 BoogieIcfgContainer [2018-10-24 01:03:54,754 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:03:54,755 INFO L168 Benchmark]: Toolchain (without parser) took 243663.06 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 3.6 GB in the end (delta: -2.3 GB). Peak memory consumption was 377.3 MB. Max. memory is 7.1 GB. [2018-10-24 01:03:54,758 INFO L168 Benchmark]: CDTParser took 0.19 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 01:03:54,759 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-24 01:03:54,760 INFO L168 Benchmark]: Boogie Procedure Inliner took 264.17 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -819.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-24 01:03:54,761 INFO L168 Benchmark]: Boogie Preprocessor took 158.00 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:03:54,761 INFO L168 Benchmark]: RCFGBuilder took 3411.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 122.5 MB). Peak memory consumption was 122.5 MB. Max. memory is 7.1 GB. [2018-10-24 01:03:54,762 INFO L168 Benchmark]: TraceAbstraction took 239146.55 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.6 GB in the end (delta: -1.6 GB). Peak memory consumption was 296.5 MB. Max. memory is 7.1 GB. [2018-10-24 01:03:54,766 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 677.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 264.17 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -819.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 158.00 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3411.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 122.5 MB). Peak memory consumption was 122.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 239146.55 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.6 GB in the end (delta: -1.6 GB). Peak memory consumption was 296.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 199]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 199). Cancelled while BasicCegarLoop was constructing difference of abstraction (1937states) and FLOYD_HOARE automaton (currently 43 states, 12 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 52. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 239.0s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 182.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1268 SDtfs, 6275 SDslu, 887 SDs, 0 SdLazy, 8841 SolverSat, 2130 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 50.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 1075 GetRequests, 973 SyntacticMatches, 17 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 126.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1937occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 29.6s AbstIntTime, 3 AbstIntIterations, 1 AbstIntStrong, 0.995475076363164 AbsIntWeakeningRatio, 0.11659192825112108 AbsIntAvgWeakeningVarsNumRemoved, 26.15695067264574 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 6 MinimizatonAttempts, 224 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 18.7s InterpolantComputationTime, 1601 NumberOfCodeBlocks, 1601 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1963 ConstructedInterpolants, 2 QuantifiedInterpolants, 1398517 SizeOfPredicates, 5 NumberOfNonLiveVariables, 680 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 11 InterpolantComputations, 6 PerfectInterpolantSequences, 917/1193 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown