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/Problem13_label08_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:28:18,065 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:28:18,069 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:28:18,084 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:28:18,084 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:28:18,085 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:28:18,086 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:28:18,089 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:28:18,091 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:28:18,098 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:28:18,103 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:28:18,103 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:28:18,104 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:28:18,105 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:28:18,107 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:28:18,108 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:28:18,109 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:28:18,111 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:28:18,113 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:28:18,114 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:28:18,115 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:28:18,116 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:28:18,118 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:28:18,129 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:28:18,129 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:28:18,132 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:28:18,132 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:28:18,133 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 21:28:18,154 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:28:18,154 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:28:18,155 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:28:18,155 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:28:18,155 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:28:18,155 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:28:18,156 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:28:18,156 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:28:18,156 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:28:18,156 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:28:18,156 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:28:18,157 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:28:18,157 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:28:18,157 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:28:18,158 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:28:18,158 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:28:18,158 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:28:18,158 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:28:18,158 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:28:18,158 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:28:18,159 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:28:18,159 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:28:18,159 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:28:18,159 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:28:18,159 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:28:18,160 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:28:18,160 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:28:18,160 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:28:18,160 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:28:18,160 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:28:18,161 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:28:18,161 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:28:18,161 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:28:18,161 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:28:18,224 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:28:18,235 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:28:18,239 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:28:18,241 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:28:18,241 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:28:18,242 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label08_true-unreach-call.c [2018-10-24 21:28:18,317 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0c5a11848/d95de290ceca46dd825a48a6168f18c7/FLAG70d5d066c [2018-10-24 21:28:19,189 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:28:19,190 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label08_true-unreach-call.c [2018-10-24 21:28:19,229 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0c5a11848/d95de290ceca46dd825a48a6168f18c7/FLAG70d5d066c [2018-10-24 21:28:19,247 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0c5a11848/d95de290ceca46dd825a48a6168f18c7 [2018-10-24 21:28:19,259 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:28:19,261 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:28:19,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:28:19,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:28:19,266 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:28:19,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:28:19" (1/1) ... [2018-10-24 21:28:19,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8de4687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:19, skipping insertion in model container [2018-10-24 21:28:19,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:28:19" (1/1) ... [2018-10-24 21:28:19,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:28:19,470 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:28:20,930 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:28:20,936 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:28:21,648 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:28:21,683 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:28:21,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:21 WrapperNode [2018-10-24 21:28:21,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:28:21,685 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:28:21,685 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:28:21,685 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:28:21,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:21" (1/1) ... [2018-10-24 21:28:21,765 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:21" (1/1) ... [2018-10-24 21:28:22,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:28:22,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:28:22,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:28:22,230 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:28:22,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:21" (1/1) ... [2018-10-24 21:28:22,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:21" (1/1) ... [2018-10-24 21:28:22,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:21" (1/1) ... [2018-10-24 21:28:22,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:21" (1/1) ... [2018-10-24 21:28:22,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:21" (1/1) ... [2018-10-24 21:28:22,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:21" (1/1) ... [2018-10-24 21:28:22,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:21" (1/1) ... [2018-10-24 21:28:22,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:28:22,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:28:22,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:28:22,493 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:28:22,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:21" (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 21:28:22,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:28:22,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:28:22,566 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 21:28:22,566 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 21:28:22,566 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 21:28:22,566 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 21:28:22,567 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:28:22,567 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:28:22,567 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:28:22,567 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:28:22,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:28:22,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:28:22,568 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:28:22,569 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:28:33,374 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:28:33,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:28:33 BoogieIcfgContainer [2018-10-24 21:28:33,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:28:33,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:28:33,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:28:33,379 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:28:33,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:28:19" (1/3) ... [2018-10-24 21:28:33,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5791cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:28:33, skipping insertion in model container [2018-10-24 21:28:33,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:21" (2/3) ... [2018-10-24 21:28:33,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5791cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:28:33, skipping insertion in model container [2018-10-24 21:28:33,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:28:33" (3/3) ... [2018-10-24 21:28:33,383 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label08_true-unreach-call.c [2018-10-24 21:28:33,393 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:28:33,402 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:28:33,419 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:28:33,477 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:28:33,478 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:28:33,478 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:28:33,478 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:28:33,478 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:28:33,478 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:28:33,479 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:28:33,479 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:28:33,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 21:28:33,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-24 21:28:33,544 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:28:33,545 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:28:33,547 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:28:33,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:28:33,553 INFO L82 PathProgramCache]: Analyzing trace with hash 332151899, now seen corresponding path program 1 times [2018-10-24 21:28:33,556 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:28:33,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:28:33,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:28:33,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:28:33,612 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:28:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:28:34,094 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:28:34,204 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 21:28:34,206 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:28:34,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:28:34,207 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:28:34,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:28:34,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:28:34,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:28:34,233 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-10-24 21:28:42,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:28:42,751 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-10-24 21:28:42,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:28:42,753 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2018-10-24 21:28:42,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:28:42,787 INFO L225 Difference]: With dead ends: 3097 [2018-10-24 21:28:42,787 INFO L226 Difference]: Without dead ends: 1975 [2018-10-24 21:28:42,799 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:28:42,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-10-24 21:28:42,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-10-24 21:28:42,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-10-24 21:28:42,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-10-24 21:28:42,968 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 57 [2018-10-24 21:28:42,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:28:42,969 INFO L481 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-10-24 21:28:42,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:28:42,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-10-24 21:28:42,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-24 21:28:42,977 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:28:42,977 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:28:42,978 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:28:42,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:28:42,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1140174250, now seen corresponding path program 1 times [2018-10-24 21:28:42,978 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:28:42,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:28:42,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:28:42,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:28:42,981 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:28:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:28:43,388 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:28:43,389 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:28:43,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:28:43,389 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:28:43,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:28:43,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:28:43,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:28:43,395 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-10-24 21:29:06,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:29:06,045 INFO L93 Difference]: Finished difference Result 5736 states and 9691 transitions. [2018-10-24 21:29:06,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:29:06,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2018-10-24 21:29:06,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:29:06,075 INFO L225 Difference]: With dead ends: 5736 [2018-10-24 21:29:06,075 INFO L226 Difference]: Without dead ends: 3768 [2018-10-24 21:29:06,083 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:29:06,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2018-10-24 21:29:06,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 3686. [2018-10-24 21:29:06,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3686 states. [2018-10-24 21:29:06,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 5660 transitions. [2018-10-24 21:29:06,208 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 5660 transitions. Word has length 133 [2018-10-24 21:29:06,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:29:06,210 INFO L481 AbstractCegarLoop]: Abstraction has 3686 states and 5660 transitions. [2018-10-24 21:29:06,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:29:06,210 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 5660 transitions. [2018-10-24 21:29:06,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-24 21:29:06,225 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:29:06,225 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:29:06,225 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:29:06,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:29:06,226 INFO L82 PathProgramCache]: Analyzing trace with hash -508893690, now seen corresponding path program 1 times [2018-10-24 21:29:06,226 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:29:06,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:29:06,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:29:06,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:29:06,229 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:29:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:29:06,465 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:29:06,466 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:29:06,466 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:29:06,466 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:29:06,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:29:06,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:29:06,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:29:06,468 INFO L87 Difference]: Start difference. First operand 3686 states and 5660 transitions. Second operand 5 states. [2018-10-24 21:29:33,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:29:33,374 INFO L93 Difference]: Finished difference Result 13667 states and 21761 transitions. [2018-10-24 21:29:33,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:29:33,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2018-10-24 21:29:33,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:29:33,431 INFO L225 Difference]: With dead ends: 13667 [2018-10-24 21:29:33,431 INFO L226 Difference]: Without dead ends: 9987 [2018-10-24 21:29:33,456 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:29:33,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9987 states. [2018-10-24 21:29:33,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9987 to 9795. [2018-10-24 21:29:33,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9795 states. [2018-10-24 21:29:33,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9795 states to 9795 states and 14500 transitions. [2018-10-24 21:29:33,707 INFO L78 Accepts]: Start accepts. Automaton has 9795 states and 14500 transitions. Word has length 147 [2018-10-24 21:29:33,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:29:33,708 INFO L481 AbstractCegarLoop]: Abstraction has 9795 states and 14500 transitions. [2018-10-24 21:29:33,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:29:33,708 INFO L276 IsEmpty]: Start isEmpty. Operand 9795 states and 14500 transitions. [2018-10-24 21:29:33,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-24 21:29:33,715 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:29:33,715 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:29:33,716 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:29:33,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:29:33,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1684270358, now seen corresponding path program 1 times [2018-10-24 21:29:33,716 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:29:33,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:29:33,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:29:33,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:29:33,718 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:29:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:29:34,006 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:29:34,229 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:29:34,229 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:29:34,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:29:34,230 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:29:34,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:29:34,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:29:34,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:29:34,231 INFO L87 Difference]: Start difference. First operand 9795 states and 14500 transitions. Second operand 6 states. [2018-10-24 21:29:48,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:29:48,674 INFO L93 Difference]: Finished difference Result 34191 states and 53803 transitions. [2018-10-24 21:29:48,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:29:48,675 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2018-10-24 21:29:48,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:29:48,806 INFO L225 Difference]: With dead ends: 34191 [2018-10-24 21:29:48,806 INFO L226 Difference]: Without dead ends: 24402 [2018-10-24 21:29:48,878 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 21:29:48,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24402 states. [2018-10-24 21:29:49,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24402 to 24169. [2018-10-24 21:29:49,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24169 states. [2018-10-24 21:29:49,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24169 states to 24169 states and 34071 transitions. [2018-10-24 21:29:49,478 INFO L78 Accepts]: Start accepts. Automaton has 24169 states and 34071 transitions. Word has length 165 [2018-10-24 21:29:49,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:29:49,479 INFO L481 AbstractCegarLoop]: Abstraction has 24169 states and 34071 transitions. [2018-10-24 21:29:49,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:29:49,479 INFO L276 IsEmpty]: Start isEmpty. Operand 24169 states and 34071 transitions. [2018-10-24 21:29:49,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-10-24 21:29:49,493 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:29:49,494 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2018-10-24 21:29:49,494 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:29:49,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:29:49,495 INFO L82 PathProgramCache]: Analyzing trace with hash -784675644, now seen corresponding path program 1 times [2018-10-24 21:29:49,495 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:29:49,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:29:49,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:29:49,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:29:49,496 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:29:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:29:49,819 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:29:50,180 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 100 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:29:50,180 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:29:50,181 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:29:50,182 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 238 with the following transitions: [2018-10-24 21:29:50,184 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2983], [2985], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3140], [3143], [3147], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3273], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 21:29:50,257 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:29:50,258 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:29:56,272 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:29:56,273 INFO L272 AbstractInterpreter]: Visited 108 different actions 108 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 21:29:56,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:29:56,286 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:30:00,507 INFO L232 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 71.83% of their original sizes. [2018-10-24 21:30:00,508 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:30:02,385 INFO L413 sIntCurrentIteration]: We have 236 unified AI predicates [2018-10-24 21:30:02,386 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:30:02,387 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:30:02,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-10-24 21:30:02,387 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:30:02,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 21:30:02,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 21:30:02,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-24 21:30:02,389 INFO L87 Difference]: Start difference. First operand 24169 states and 34071 transitions. Second operand 11 states. [2018-10-24 21:30:36,769 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 21:31:57,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 21:31:57,261 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:31:57,267 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:31:57,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:31:57 BoogieIcfgContainer [2018-10-24 21:31:57,268 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:31:57,269 INFO L168 Benchmark]: Toolchain (without parser) took 218009.03 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 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 21:31:57,270 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-24 21:31:57,270 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2422.32 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:31:57,271 INFO L168 Benchmark]: Boogie Procedure Inliner took 545.01 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 823.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.0 MB. Max. memory is 7.1 GB. [2018-10-24 21:31:57,273 INFO L168 Benchmark]: Boogie Preprocessor took 262.28 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:31:57,273 INFO L168 Benchmark]: RCFGBuilder took 10882.76 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 183.0 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 35.3 MB). Peak memory consumption was 660.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:31:57,274 INFO L168 Benchmark]: TraceAbstraction took 203891.67 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 2.9 GB in the end (delta: -754.4 MB). Peak memory consumption was 943.2 MB. Max. memory is 7.1 GB. [2018-10-24 21:31:57,280 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2422.32 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 545.01 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 823.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 262.28 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10882.76 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 183.0 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 35.3 MB). Peak memory consumption was 660.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203891.67 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 2.9 GB in the end (delta: -754.4 MB). Peak memory consumption was 943.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 162]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 162). Cancelled while BasicCegarLoop was constructing difference of abstraction (24169states) and FLOYD_HOARE automaton (currently 10 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (5000 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 203.8s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 187.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2250 SDtfs, 13354 SDslu, 2193 SDs, 0 SdLazy, 25196 SolverSat, 5773 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 145.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 273 GetRequests, 237 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24169occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9960625814863102 AbsIntWeakeningRatio, 0.11864406779661017 AbsIntAvgWeakeningVarsNumRemoved, 30.610169491525422 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 508 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 739 NumberOfCodeBlocks, 739 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 734 ConstructedInterpolants, 0 QuantifiedInterpolants, 346000 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 255/325 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown