java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label37_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:05:28,070 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:05:28,073 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:05:28,089 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:05:28,089 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:05:28,091 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:05:28,092 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:05:28,095 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:05:28,097 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:05:28,098 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:05:28,099 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:05:28,099 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:05:28,101 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:05:28,102 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:05:28,103 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:05:28,104 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:05:28,112 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:05:28,114 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:05:28,117 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:05:28,119 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:05:28,120 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:05:28,124 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:05:28,128 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:05:28,138 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 00:05:28,138 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 00:05:28,139 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 00:05:28,141 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 00:05:28,142 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:05:28,173 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:05:28,174 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:05:28,175 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:05:28,175 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:05:28,175 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:05:28,175 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:05:28,176 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:05:28,176 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:05:28,176 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:05:28,176 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:05:28,176 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:05:28,177 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:05:28,177 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:05:28,177 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:05:28,179 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:05:28,179 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:05:28,179 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:05:28,179 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:05:28,179 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:05:28,180 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:05:28,180 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:05:28,180 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:05:28,180 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:05:28,180 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:05:28,181 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:05:28,182 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:05:28,182 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:05:28,182 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:05:28,183 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:05:28,183 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:05:28,183 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:05:28,183 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:05:28,183 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:05:28,183 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:05:28,246 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:05:28,262 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:05:28,267 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:05:28,269 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:05:28,269 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:05:28,270 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label37_false-unreach-call.c [2018-11-07 00:05:28,335 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c84ecd40/92680f91279443b6a52a05d97c26cae7/FLAG522ef34fe [2018-11-07 00:05:29,093 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:05:29,094 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label37_false-unreach-call.c [2018-11-07 00:05:29,129 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c84ecd40/92680f91279443b6a52a05d97c26cae7/FLAG522ef34fe [2018-11-07 00:05:29,152 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c84ecd40/92680f91279443b6a52a05d97c26cae7 [2018-11-07 00:05:29,166 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:05:29,168 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:05:29,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:05:29,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:05:29,173 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:05:29,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:05:29" (1/1) ... [2018-11-07 00:05:29,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7293a3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:29, skipping insertion in model container [2018-11-07 00:05:29,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:05:29" (1/1) ... [2018-11-07 00:05:29,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:05:29,372 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:05:30,654 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:05:30,659 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:05:31,309 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:05:31,342 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:05:31,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:31 WrapperNode [2018-11-07 00:05:31,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:05:31,344 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:05:31,344 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:05:31,345 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:05:31,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:31" (1/1) ... [2018-11-07 00:05:31,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:31" (1/1) ... [2018-11-07 00:05:31,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:05:31,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:05:31,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:05:31,686 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:05:31,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:31" (1/1) ... [2018-11-07 00:05:31,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:31" (1/1) ... [2018-11-07 00:05:31,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:31" (1/1) ... [2018-11-07 00:05:31,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:31" (1/1) ... [2018-11-07 00:05:31,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:31" (1/1) ... [2018-11-07 00:05:31,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:31" (1/1) ... [2018-11-07 00:05:31,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:31" (1/1) ... [2018-11-07 00:05:31,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:05:31,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:05:31,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:05:31,948 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:05:31,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:05:32,019 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:05:32,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:05:32,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:05:32,020 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 00:05:32,020 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 00:05:32,020 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 00:05:32,020 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 00:05:32,020 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:05:32,021 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:05:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:05:32,021 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:05:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:05:32,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:05:32,023 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:05:32,023 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:05:40,339 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:05:40,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:05:40 BoogieIcfgContainer [2018-11-07 00:05:40,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:05:40,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:05:40,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:05:40,344 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:05:40,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:05:29" (1/3) ... [2018-11-07 00:05:40,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5a07f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:05:40, skipping insertion in model container [2018-11-07 00:05:40,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:31" (2/3) ... [2018-11-07 00:05:40,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5a07f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:05:40, skipping insertion in model container [2018-11-07 00:05:40,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:05:40" (3/3) ... [2018-11-07 00:05:40,348 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label37_false-unreach-call.c [2018-11-07 00:05:40,358 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:05:40,369 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:05:40,388 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:05:40,450 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:05:40,450 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:05:40,450 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:05:40,450 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:05:40,450 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:05:40,451 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:05:40,451 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:05:40,451 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:05:40,498 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 00:05:40,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-07 00:05:40,507 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:05:40,508 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] [2018-11-07 00:05:40,510 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:05:40,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:05:40,516 INFO L82 PathProgramCache]: Analyzing trace with hash -2022607172, now seen corresponding path program 1 times [2018-11-07 00:05:40,518 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:05:40,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:05:40,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:05:40,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:05:40,574 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:05:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:05:40,932 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:05:41,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:05:41,034 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:05:41,035 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:05:41,035 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:05:41,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:05:41,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:05:41,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:05:41,062 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-07 00:05:49,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:05:49,222 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-07 00:05:49,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:05:49,224 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-11-07 00:05:49,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:05:49,260 INFO L225 Difference]: With dead ends: 2446 [2018-11-07 00:05:49,261 INFO L226 Difference]: Without dead ends: 1604 [2018-11-07 00:05:49,274 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:05:49,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-07 00:05:49,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-07 00:05:49,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 00:05:49,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2861 transitions. [2018-11-07 00:05:49,450 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2861 transitions. Word has length 20 [2018-11-07 00:05:49,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:05:49,452 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2861 transitions. [2018-11-07 00:05:49,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:05:49,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2861 transitions. [2018-11-07 00:05:49,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-11-07 00:05:49,459 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:05:49,459 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:05:49,461 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:05:49,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:05:49,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1778417694, now seen corresponding path program 1 times [2018-11-07 00:05:49,462 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:05:49,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:05:49,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:05:49,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:05:49,464 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:05:49,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:05:49,814 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:05:49,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:05:49,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:05:49,815 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:05:49,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:05:49,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:05:49,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:05:49,819 INFO L87 Difference]: Start difference. First operand 1604 states and 2861 transitions. Second operand 4 states. [2018-11-07 00:06:03,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:06:03,672 INFO L93 Difference]: Finished difference Result 6274 states and 11427 transitions. [2018-11-07 00:06:03,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:06:03,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2018-11-07 00:06:03,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:06:03,712 INFO L225 Difference]: With dead ends: 6274 [2018-11-07 00:06:03,712 INFO L226 Difference]: Without dead ends: 4676 [2018-11-07 00:06:03,724 INFO L604 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 [2018-11-07 00:06:03,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4676 states. [2018-11-07 00:06:03,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4676 to 4676. [2018-11-07 00:06:03,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4676 states. [2018-11-07 00:06:03,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4676 states to 4676 states and 7992 transitions. [2018-11-07 00:06:03,899 INFO L78 Accepts]: Start accepts. Automaton has 4676 states and 7992 transitions. Word has length 96 [2018-11-07 00:06:03,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:06:03,900 INFO L480 AbstractCegarLoop]: Abstraction has 4676 states and 7992 transitions. [2018-11-07 00:06:03,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:06:03,900 INFO L276 IsEmpty]: Start isEmpty. Operand 4676 states and 7992 transitions. [2018-11-07 00:06:03,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-11-07 00:06:03,908 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:06:03,908 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:06:03,914 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:06:03,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:06:03,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1546584746, now seen corresponding path program 1 times [2018-11-07 00:06:03,914 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:06:03,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:06:03,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:06:03,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:06:03,917 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:06:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:06:04,166 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:06:04,167 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:06:04,167 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:06:04,167 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:06:04,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:06:04,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:06:04,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:06:04,169 INFO L87 Difference]: Start difference. First operand 4676 states and 7992 transitions. Second operand 5 states. [2018-11-07 00:06:12,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:06:12,746 INFO L93 Difference]: Finished difference Result 14214 states and 24823 transitions. [2018-11-07 00:06:12,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 00:06:12,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2018-11-07 00:06:12,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:06:12,812 INFO L225 Difference]: With dead ends: 14214 [2018-11-07 00:06:12,813 INFO L226 Difference]: Without dead ends: 9544 [2018-11-07 00:06:12,835 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:06:12,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9544 states. [2018-11-07 00:06:13,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9544 to 9456. [2018-11-07 00:06:13,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9456 states. [2018-11-07 00:06:13,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9456 states to 9456 states and 14962 transitions. [2018-11-07 00:06:13,130 INFO L78 Accepts]: Start accepts. Automaton has 9456 states and 14962 transitions. Word has length 100 [2018-11-07 00:06:13,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:06:13,130 INFO L480 AbstractCegarLoop]: Abstraction has 9456 states and 14962 transitions. [2018-11-07 00:06:13,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:06:13,131 INFO L276 IsEmpty]: Start isEmpty. Operand 9456 states and 14962 transitions. [2018-11-07 00:06:13,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-11-07 00:06:13,134 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:06:13,135 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:06:13,135 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:06:13,135 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:06:13,135 INFO L82 PathProgramCache]: Analyzing trace with hash 36653875, now seen corresponding path program 1 times [2018-11-07 00:06:13,135 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:06:13,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:06:13,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:06:13,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:06:13,137 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:06:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:06:13,337 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:06:13,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:06:13,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:06:13,338 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:06:13,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:06:13,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:06:13,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:06:13,339 INFO L87 Difference]: Start difference. First operand 9456 states and 14962 transitions. Second operand 6 states. [2018-11-07 00:06:24,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:06:24,732 INFO L93 Difference]: Finished difference Result 22338 states and 35508 transitions. [2018-11-07 00:06:24,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:06:24,733 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-11-07 00:06:24,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:06:24,797 INFO L225 Difference]: With dead ends: 22338 [2018-11-07 00:06:24,797 INFO L226 Difference]: Without dead ends: 12888 [2018-11-07 00:06:24,833 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:06:24,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12888 states. [2018-11-07 00:06:25,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12888 to 12853. [2018-11-07 00:06:25,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12853 states. [2018-11-07 00:06:25,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12853 states to 12853 states and 19481 transitions. [2018-11-07 00:06:25,172 INFO L78 Accepts]: Start accepts. Automaton has 12853 states and 19481 transitions. Word has length 111 [2018-11-07 00:06:25,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:06:25,172 INFO L480 AbstractCegarLoop]: Abstraction has 12853 states and 19481 transitions. [2018-11-07 00:06:25,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:06:25,173 INFO L276 IsEmpty]: Start isEmpty. Operand 12853 states and 19481 transitions. [2018-11-07 00:06:25,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-11-07 00:06:25,176 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:06:25,181 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:06:25,181 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:06:25,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:06:25,182 INFO L82 PathProgramCache]: Analyzing trace with hash 586101302, now seen corresponding path program 1 times [2018-11-07 00:06:25,182 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:06:25,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:06:25,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:06:25,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:06:25,183 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:06:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:06:25,469 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:06:25,793 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:06:25,793 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:06:25,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:06:25,794 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:06:25,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:06:25,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:06:25,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:06:25,795 INFO L87 Difference]: Start difference. First operand 12853 states and 19481 transitions. Second operand 6 states. [2018-11-07 00:06:33,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:06:33,016 INFO L93 Difference]: Finished difference Result 35975 states and 57761 transitions. [2018-11-07 00:06:33,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:06:33,017 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2018-11-07 00:06:33,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:06:33,140 INFO L225 Difference]: With dead ends: 35975 [2018-11-07 00:06:33,140 INFO L226 Difference]: Without dead ends: 23128 [2018-11-07 00:06:33,178 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:06:33,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23128 states. [2018-11-07 00:06:33,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23128 to 22860. [2018-11-07 00:06:33,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22860 states. [2018-11-07 00:06:33,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22860 states to 22860 states and 35054 transitions. [2018-11-07 00:06:33,869 INFO L78 Accepts]: Start accepts. Automaton has 22860 states and 35054 transitions. Word has length 116 [2018-11-07 00:06:33,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:06:33,869 INFO L480 AbstractCegarLoop]: Abstraction has 22860 states and 35054 transitions. [2018-11-07 00:06:33,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:06:33,870 INFO L276 IsEmpty]: Start isEmpty. Operand 22860 states and 35054 transitions. [2018-11-07 00:06:33,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-11-07 00:06:33,873 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:06:33,874 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:06:33,874 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:06:33,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:06:33,875 INFO L82 PathProgramCache]: Analyzing trace with hash -220169182, now seen corresponding path program 1 times [2018-11-07 00:06:33,875 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:06:33,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:06:33,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:06:33,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:06:33,877 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:06:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:06:34,208 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:06:34,208 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:06:34,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:06:34,209 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:06:34,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:06:34,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:06:34,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:06:34,210 INFO L87 Difference]: Start difference. First operand 22860 states and 35054 transitions. Second operand 5 states. [2018-11-07 00:06:48,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:06:48,363 INFO L93 Difference]: Finished difference Result 74787 states and 121732 transitions. [2018-11-07 00:06:48,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:06:48,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2018-11-07 00:06:48,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:06:48,578 INFO L225 Difference]: With dead ends: 74787 [2018-11-07 00:06:48,578 INFO L226 Difference]: Without dead ends: 51933 [2018-11-07 00:06:48,663 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-07 00:06:48,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51933 states. [2018-11-07 00:06:49,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51933 to 51493. [2018-11-07 00:06:49,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51493 states. [2018-11-07 00:06:49,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51493 states to 51493 states and 73085 transitions. [2018-11-07 00:06:49,809 INFO L78 Accepts]: Start accepts. Automaton has 51493 states and 73085 transitions. Word has length 142 [2018-11-07 00:06:49,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:06:49,810 INFO L480 AbstractCegarLoop]: Abstraction has 51493 states and 73085 transitions. [2018-11-07 00:06:49,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:06:49,810 INFO L276 IsEmpty]: Start isEmpty. Operand 51493 states and 73085 transitions. [2018-11-07 00:06:49,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-11-07 00:06:49,819 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:06:49,822 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 00:06:49,823 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:06:49,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:06:49,823 INFO L82 PathProgramCache]: Analyzing trace with hash -387409999, now seen corresponding path program 1 times [2018-11-07 00:06:49,823 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:06:49,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:06:49,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:06:49,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:06:49,824 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:06:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:06:50,165 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:06:50,578 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:06:50,578 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:06:50,578 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:06:50,579 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 222 with the following transitions: [2018-11-07 00:06:50,590 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1927], [1929], [1932], [1940], [1948], [1956], [1964], [1972], [1980], [1988], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2400], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2564], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 00:06:50,687 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:06:50,687 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:06:54,458 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:06:54,557 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:06:54,559 INFO L272 AbstractInterpreter]: Visited 126 different actions 126 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 00:06:54,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:06:54,576 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:06:56,747 INFO L227 lantSequenceWeakener]: Weakened 213 states. On average, predicates are now at 75.07% of their original sizes. [2018-11-07 00:06:56,748 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:06:57,408 INFO L415 sIntCurrentIteration]: We unified 220 AI predicates to 220 [2018-11-07 00:06:57,408 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:06:57,409 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:06:57,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-11-07 00:06:57,409 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:06:57,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 00:06:57,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 00:06:57,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:06:57,411 INFO L87 Difference]: Start difference. First operand 51493 states and 73085 transitions. Second operand 8 states. Received shutdown request... [2018-11-07 00:09:08,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 00:09:08,634 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:09:08,639 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:09:08,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:09:08 BoogieIcfgContainer [2018-11-07 00:09:08,639 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:09:08,640 INFO L168 Benchmark]: Toolchain (without parser) took 219473.46 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 00:09:08,641 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:09:08,642 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2174.33 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-11-07 00:09:08,643 INFO L168 Benchmark]: Boogie Procedure Inliner took 341.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2018-11-07 00:09:08,644 INFO L168 Benchmark]: Boogie Preprocessor took 262.26 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2018-11-07 00:09:08,645 INFO L168 Benchmark]: RCFGBuilder took 8391.98 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 156.8 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -170.3 MB). Peak memory consumption was 658.9 MB. Max. memory is 7.1 GB. [2018-11-07 00:09:08,646 INFO L168 Benchmark]: TraceAbstraction took 208298.33 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: -168.9 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 00:09:08,651 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2174.33 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 341.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 795.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 262.26 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8391.98 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 156.8 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -170.3 MB). Peak memory consumption was 658.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208298.33 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: -168.9 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 51). Cancelled while BasicCegarLoop was constructing difference of abstraction (51493states) and FLOYD_HOARE automaton (currently 8 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (34754 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 208.1s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 195.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1491 SDtfs, 17115 SDslu, 1193 SDs, 0 SdLazy, 32558 SolverSat, 6501 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 154.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 267 GetRequests, 229 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51493occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.9s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9955944055944055 AbsIntWeakeningRatio, 0.12272727272727273 AbsIntAvgWeakeningVarsNumRemoved, 1042.7318181818182 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 6 MinimizatonAttempts, 831 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 806 NumberOfCodeBlocks, 806 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 799 ConstructedInterpolants, 0 QuantifiedInterpolants, 376344 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 96/171 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown