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_label57_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:09:23,102 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:09:23,104 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:09:23,117 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:09:23,117 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:09:23,118 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:09:23,119 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:09:23,121 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:09:23,123 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:09:23,124 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:09:23,125 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:09:23,125 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:09:23,126 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:09:23,127 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:09:23,128 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:09:23,129 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:09:23,130 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:09:23,132 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:09:23,134 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:09:23,135 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:09:23,136 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:09:23,137 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:09:23,144 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:09:23,145 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:09:23,145 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:09:23,146 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:09:23,147 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:09:23,148 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:09:23,148 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:09:23,150 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:09:23,152 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:09:23,153 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 18:09:23,153 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:09:23,153 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:09:23,156 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:09:23,157 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:09:23,157 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 18:09:23,189 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:09:23,189 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:09:23,190 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:09:23,190 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:09:23,191 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:09:23,191 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:09:23,191 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:09:23,191 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:09:23,192 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:09:23,192 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:09:23,192 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:09:23,192 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:09:23,193 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:09:23,193 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:09:23,193 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:09:23,193 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:09:23,194 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:09:23,195 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:09:23,195 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:09:23,195 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:09:23,195 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:09:23,196 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:09:23,196 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:09:23,196 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:09:23,196 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:09:23,196 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:09:23,197 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:09:23,197 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:09:23,197 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:09:23,198 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:09:23,198 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:09:23,198 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:09:23,198 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:09:23,198 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:09:23,271 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:09:23,287 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:09:23,293 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:09:23,295 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:09:23,295 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:09:23,296 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label57_false-unreach-call.c [2018-10-24 18:09:23,361 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2ebd0cc5a/fcee93c20db349a29d3a89064b3d6fcf/FLAG6bd7e7141 [2018-10-24 18:09:23,998 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:09:23,999 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label57_false-unreach-call.c [2018-10-24 18:09:24,012 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2ebd0cc5a/fcee93c20db349a29d3a89064b3d6fcf/FLAG6bd7e7141 [2018-10-24 18:09:24,030 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2ebd0cc5a/fcee93c20db349a29d3a89064b3d6fcf [2018-10-24 18:09:24,045 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:09:24,047 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:09:24,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:09:24,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:09:24,052 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:09:24,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:09:24" (1/1) ... [2018-10-24 18:09:24,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20199a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:24, skipping insertion in model container [2018-10-24 18:09:24,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:09:24" (1/1) ... [2018-10-24 18:09:24,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:09:24,152 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:09:24,647 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:09:24,652 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:09:24,750 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:09:24,771 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:09:24,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:24 WrapperNode [2018-10-24 18:09:24,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:09:24,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:09:24,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:09:24,773 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:09:24,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:24" (1/1) ... [2018-10-24 18:09:24,812 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:24" (1/1) ... [2018-10-24 18:09:24,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:09:24,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:09:24,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:09:24,987 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:09:24,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:24" (1/1) ... [2018-10-24 18:09:24,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:24" (1/1) ... [2018-10-24 18:09:25,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:24" (1/1) ... [2018-10-24 18:09:25,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:24" (1/1) ... [2018-10-24 18:09:25,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:24" (1/1) ... [2018-10-24 18:09:25,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:24" (1/1) ... [2018-10-24 18:09:25,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:24" (1/1) ... [2018-10-24 18:09:25,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:09:25,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:09:25,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:09:25,094 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:09:25,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:24" (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 18:09:25,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:09:25,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:09:25,178 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:09:25,178 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:09:25,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:09:25,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:09:25,179 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:09:25,180 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:09:28,533 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:09:28,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:09:28 BoogieIcfgContainer [2018-10-24 18:09:28,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:09:28,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:09:28,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:09:28,540 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:09:28,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:09:24" (1/3) ... [2018-10-24 18:09:28,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4107411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:09:28, skipping insertion in model container [2018-10-24 18:09:28,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:24" (2/3) ... [2018-10-24 18:09:28,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4107411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:09:28, skipping insertion in model container [2018-10-24 18:09:28,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:09:28" (3/3) ... [2018-10-24 18:09:28,544 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label57_false-unreach-call.c [2018-10-24 18:09:28,557 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:09:28,567 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:09:28,585 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:09:28,625 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:09:28,625 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:09:28,625 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:09:28,625 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:09:28,625 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:09:28,625 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:09:28,626 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:09:28,626 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:09:28,660 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-24 18:09:28,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-24 18:09:28,670 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:28,671 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:09:28,673 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:28,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:28,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1838359401, now seen corresponding path program 1 times [2018-10-24 18:09:28,682 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:28,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:28,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:28,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:28,736 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:29,047 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:09:29,060 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 18:09:29,063 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:09:29,063 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:09:29,063 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:29,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:09:29,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:09:29,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:09:29,083 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-24 18:09:31,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:31,089 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-24 18:09:31,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:09:31,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-10-24 18:09:31,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:31,111 INFO L225 Difference]: With dead ends: 574 [2018-10-24 18:09:31,112 INFO L226 Difference]: Without dead ends: 356 [2018-10-24 18:09:31,120 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:09:31,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-24 18:09:31,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-24 18:09:31,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-24 18:09:31,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-10-24 18:09:31,228 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 13 [2018-10-24 18:09:31,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:31,229 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-10-24 18:09:31,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:09:31,229 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-10-24 18:09:31,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-24 18:09:31,238 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:31,238 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:09:31,239 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:31,239 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:31,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1031774248, now seen corresponding path program 1 times [2018-10-24 18:09:31,239 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:31,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:31,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:31,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:31,242 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:31,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:09:31,622 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:09:31,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:09:31,623 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:31,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:09:31,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:09:31,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:09:31,626 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 6 states. [2018-10-24 18:09:33,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:33,450 INFO L93 Difference]: Finished difference Result 867 states and 1507 transitions. [2018-10-24 18:09:33,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:09:33,451 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2018-10-24 18:09:33,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:33,459 INFO L225 Difference]: With dead ends: 867 [2018-10-24 18:09:33,459 INFO L226 Difference]: Without dead ends: 517 [2018-10-24 18:09:33,464 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 18:09:33,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2018-10-24 18:09:33,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 508. [2018-10-24 18:09:33,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2018-10-24 18:09:33,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 831 transitions. [2018-10-24 18:09:33,506 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 831 transitions. Word has length 87 [2018-10-24 18:09:33,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:33,507 INFO L481 AbstractCegarLoop]: Abstraction has 508 states and 831 transitions. [2018-10-24 18:09:33,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:09:33,507 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 831 transitions. [2018-10-24 18:09:33,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-24 18:09:33,511 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:33,511 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:09:33,511 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:33,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:33,512 INFO L82 PathProgramCache]: Analyzing trace with hash -281780396, now seen corresponding path program 1 times [2018-10-24 18:09:33,512 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:33,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:33,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:33,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:33,514 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:33,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:09:33,676 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:09:33,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:09:33,676 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:33,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:09:33,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:09:33,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:09:33,679 INFO L87 Difference]: Start difference. First operand 508 states and 831 transitions. Second operand 3 states. [2018-10-24 18:09:34,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:34,882 INFO L93 Difference]: Finished difference Result 1448 states and 2461 transitions. [2018-10-24 18:09:34,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:09:34,885 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 93 [2018-10-24 18:09:34,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:34,897 INFO L225 Difference]: With dead ends: 1448 [2018-10-24 18:09:34,897 INFO L226 Difference]: Without dead ends: 946 [2018-10-24 18:09:34,904 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:09:34,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2018-10-24 18:09:34,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 946. [2018-10-24 18:09:34,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 946 states. [2018-10-24 18:09:34,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1389 transitions. [2018-10-24 18:09:34,973 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1389 transitions. Word has length 93 [2018-10-24 18:09:34,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:34,974 INFO L481 AbstractCegarLoop]: Abstraction has 946 states and 1389 transitions. [2018-10-24 18:09:34,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:09:34,975 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1389 transitions. [2018-10-24 18:09:34,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-24 18:09:34,981 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:34,981 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:09:34,981 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:34,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:34,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1162021757, now seen corresponding path program 1 times [2018-10-24 18:09:34,982 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:34,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:34,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:34,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:34,984 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:35,173 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:09:35,173 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:09:35,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:09:35,174 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:35,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:09:35,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:09:35,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:09:35,175 INFO L87 Difference]: Start difference. First operand 946 states and 1389 transitions. Second operand 6 states. [2018-10-24 18:09:38,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:38,848 INFO L93 Difference]: Finished difference Result 2476 states and 3870 transitions. [2018-10-24 18:09:38,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:09:38,849 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2018-10-24 18:09:38,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:38,864 INFO L225 Difference]: With dead ends: 2476 [2018-10-24 18:09:38,864 INFO L226 Difference]: Without dead ends: 1536 [2018-10-24 18:09:38,872 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 18:09:38,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2018-10-24 18:09:38,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1517. [2018-10-24 18:09:38,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1517 states. [2018-10-24 18:09:38,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 2192 transitions. [2018-10-24 18:09:38,946 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 2192 transitions. Word has length 104 [2018-10-24 18:09:38,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:38,947 INFO L481 AbstractCegarLoop]: Abstraction has 1517 states and 2192 transitions. [2018-10-24 18:09:38,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:09:38,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 2192 transitions. [2018-10-24 18:09:38,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-24 18:09:38,958 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:38,958 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:09:38,958 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:38,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:38,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1276807536, now seen corresponding path program 1 times [2018-10-24 18:09:38,959 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:38,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:38,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:38,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:38,960 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:39,287 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:09:39,397 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:09:39,398 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:09:39,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:09:39,398 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:39,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:09:39,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:09:39,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:09:39,400 INFO L87 Difference]: Start difference. First operand 1517 states and 2192 transitions. Second operand 6 states. [2018-10-24 18:09:41,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:41,091 INFO L93 Difference]: Finished difference Result 3307 states and 4766 transitions. [2018-10-24 18:09:41,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:09:41,095 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 155 [2018-10-24 18:09:41,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:41,110 INFO L225 Difference]: With dead ends: 3307 [2018-10-24 18:09:41,110 INFO L226 Difference]: Without dead ends: 1796 [2018-10-24 18:09:41,120 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:09:41,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2018-10-24 18:09:41,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1751. [2018-10-24 18:09:41,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1751 states. [2018-10-24 18:09:41,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 2338 transitions. [2018-10-24 18:09:41,177 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 2338 transitions. Word has length 155 [2018-10-24 18:09:41,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:41,177 INFO L481 AbstractCegarLoop]: Abstraction has 1751 states and 2338 transitions. [2018-10-24 18:09:41,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:09:41,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 2338 transitions. [2018-10-24 18:09:41,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-24 18:09:41,182 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:41,182 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 18:09:41,182 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:41,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:41,183 INFO L82 PathProgramCache]: Analyzing trace with hash 555074088, now seen corresponding path program 1 times [2018-10-24 18:09:41,183 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:41,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:41,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:41,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:41,184 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:41,369 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-24 18:09:41,369 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:09:41,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:09:41,369 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:41,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:09:41,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:09:41,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:09:41,371 INFO L87 Difference]: Start difference. First operand 1751 states and 2338 transitions. Second operand 3 states. [2018-10-24 18:09:43,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:43,480 INFO L93 Difference]: Finished difference Result 4731 states and 6537 transitions. [2018-10-24 18:09:43,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:09:43,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2018-10-24 18:09:43,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:43,496 INFO L225 Difference]: With dead ends: 4731 [2018-10-24 18:09:43,497 INFO L226 Difference]: Without dead ends: 2986 [2018-10-24 18:09:43,509 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:09:43,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2018-10-24 18:09:43,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 2962. [2018-10-24 18:09:43,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2962 states. [2018-10-24 18:09:43,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2962 states to 2962 states and 3774 transitions. [2018-10-24 18:09:43,593 INFO L78 Accepts]: Start accepts. Automaton has 2962 states and 3774 transitions. Word has length 192 [2018-10-24 18:09:43,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:43,594 INFO L481 AbstractCegarLoop]: Abstraction has 2962 states and 3774 transitions. [2018-10-24 18:09:43,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:09:43,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2962 states and 3774 transitions. [2018-10-24 18:09:43,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-24 18:09:43,605 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:43,605 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 18:09:43,606 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:43,606 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:43,606 INFO L82 PathProgramCache]: Analyzing trace with hash 36527643, now seen corresponding path program 1 times [2018-10-24 18:09:43,606 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:43,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:43,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:43,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:43,612 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:43,987 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:09:44,543 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-24 18:09:44,544 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:09:44,544 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:09:44,545 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 236 with the following transitions: [2018-10-24 18:09:44,548 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [7], [10], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [782], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 18:09:44,629 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:09:44,630 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:09:47,000 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:10:15,094 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:10:15,096 INFO L272 AbstractInterpreter]: Visited 150 different actions 870 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 18:10:15,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:10:15,109 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:10:19,104 INFO L232 lantSequenceWeakener]: Weakened 66 states. On average, predicates are now at 73.19% of their original sizes. [2018-10-24 18:10:19,104 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:10:47,308 INFO L413 sIntCurrentIteration]: We have 234 unified AI predicates [2018-10-24 18:10:47,308 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:10:47,309 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:10:47,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [8] total 31 [2018-10-24 18:10:47,309 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:10:47,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-24 18:10:47,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-24 18:10:47,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2018-10-24 18:10:47,311 INFO L87 Difference]: Start difference. First operand 2962 states and 3774 transitions. Second operand 25 states. [2018-10-24 18:13:06,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:13:06,052 INFO L93 Difference]: Finished difference Result 6489 states and 8269 transitions. [2018-10-24 18:13:06,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-24 18:13:06,052 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 235 [2018-10-24 18:13:06,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:13:06,066 INFO L225 Difference]: With dead ends: 6489 [2018-10-24 18:13:06,067 INFO L226 Difference]: Without dead ends: 3533 [2018-10-24 18:13:06,077 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 248 GetRequests, 187 SyntacticMatches, 24 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 31.9s TimeCoverageRelationStatistics Valid=338, Invalid=1144, Unknown=0, NotChecked=0, Total=1482 [2018-10-24 18:13:06,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3533 states. [2018-10-24 18:13:06,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3533 to 3254. [2018-10-24 18:13:06,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3254 states. [2018-10-24 18:13:06,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3254 states to 3254 states and 4071 transitions. [2018-10-24 18:13:06,235 INFO L78 Accepts]: Start accepts. Automaton has 3254 states and 4071 transitions. Word has length 235 [2018-10-24 18:13:06,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:13:06,235 INFO L481 AbstractCegarLoop]: Abstraction has 3254 states and 4071 transitions. [2018-10-24 18:13:06,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-24 18:13:06,236 INFO L276 IsEmpty]: Start isEmpty. Operand 3254 states and 4071 transitions. [2018-10-24 18:13:06,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-10-24 18:13:06,245 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:13:06,246 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 18:13:06,246 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:13:06,247 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:13:06,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1124090659, now seen corresponding path program 1 times [2018-10-24 18:13:06,247 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:13:06,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:13:06,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:13:06,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:13:06,248 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:13:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:13:06,666 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-10-24 18:13:06,667 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:13:06,667 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:13:06,667 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 272 with the following transitions: [2018-10-24 18:13:06,668 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [7], [10], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [678], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [782], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 18:13:06,680 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:13:06,680 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:13:09,555 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 18:13:24,745 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 18:13:24,746 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 18:13:24,748 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 18:13:24,748 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:13:24,748 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 18:13:24,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:13:24,761 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 18:13:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:13:24,880 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 18:13:24,916 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 18:13:25,118 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 18:13:25,118 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:13:25,124 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:13:25,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:13:25 BoogieIcfgContainer [2018-10-24 18:13:25,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:13:25,125 INFO L168 Benchmark]: Toolchain (without parser) took 241079.64 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 1.0 GB. Max. memory is 7.1 GB. [2018-10-24 18:13:25,126 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 18:13:25,127 INFO L168 Benchmark]: CACSL2BoogieTranslator took 724.60 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 18:13:25,127 INFO L168 Benchmark]: Boogie Procedure Inliner took 213.24 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 696.3 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -771.5 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-24 18:13:25,128 INFO L168 Benchmark]: Boogie Preprocessor took 106.72 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 18:13:25,129 INFO L168 Benchmark]: RCFGBuilder took 3441.36 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 119.6 MB). Peak memory consumption was 119.6 MB. Max. memory is 7.1 GB. [2018-10-24 18:13:25,130 INFO L168 Benchmark]: TraceAbstraction took 236588.44 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.0 GB in the end (delta: -973.0 MB). Peak memory consumption was 945.9 MB. Max. memory is 7.1 GB. [2018-10-24 18:13:25,134 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 724.60 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 213.24 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 696.3 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -771.5 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.72 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3441.36 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 119.6 MB). Peak memory consumption was 119.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 236588.44 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.0 GB in the end (delta: -973.0 MB). Peak memory consumption was 945.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 22]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 22). Cancelled while BasicCegarLoop was analyzing trace of length 272 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 8 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 236.5s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 151.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1210 SDtfs, 4840 SDslu, 720 SDs, 0 SdLazy, 6038 SolverSat, 1094 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 71.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 291 GetRequests, 201 SyntacticMatches, 29 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 32.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3254occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 48.6s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9949600520252697 AbsIntWeakeningRatio, 0.1111111111111111 AbsIntAvgWeakeningVarsNumRemoved, 277.71367521367523 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 376 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 879 NumberOfCodeBlocks, 879 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 872 ConstructedInterpolants, 0 QuantifiedInterpolants, 577206 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 210/216 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown