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/Problem02_label21_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 23:21:29,181 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 23:21:29,183 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 23:21:29,196 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 23:21:29,197 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 23:21:29,198 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 23:21:29,199 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 23:21:29,201 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 23:21:29,204 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 23:21:29,209 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 23:21:29,210 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 23:21:29,210 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 23:21:29,211 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 23:21:29,212 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 23:21:29,218 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 23:21:29,220 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 23:21:29,221 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 23:21:29,226 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 23:21:29,228 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 23:21:29,232 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 23:21:29,234 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 23:21:29,238 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 23:21:29,243 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 23:21:29,256 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 [2018-10-23 23:21:29,271 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 23:21:29,272 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 23:21:29,273 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 23:21:29,273 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 23:21:29,273 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 23:21:29,273 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 23:21:29,273 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 23:21:29,274 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 23:21:29,274 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 23:21:29,274 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 23:21:29,274 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 23:21:29,274 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 23:21:29,275 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 23:21:29,275 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 23:21:29,276 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 23:21:29,276 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 23:21:29,276 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 23:21:29,276 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 23:21:29,277 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 23:21:29,277 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 23:21:29,277 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 23:21:29,277 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 23:21:29,277 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 23:21:29,277 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 23:21:29,278 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:21:29,278 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 23:21:29,278 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 23:21:29,278 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 23:21:29,278 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 23:21:29,279 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 23:21:29,279 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 23:21:29,279 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 23:21:29,279 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 23:21:29,280 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 23:21:29,341 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 23:21:29,357 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 23:21:29,361 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 23:21:29,363 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 23:21:29,364 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 23:21:29,365 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label21_true-unreach-call_false-termination.c [2018-10-23 23:21:29,436 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/28772cf15/11c48e020b4842148c210ec0961f0adc/FLAG6a0c86fb8 [2018-10-23 23:21:30,122 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 23:21:30,123 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label21_true-unreach-call_false-termination.c [2018-10-23 23:21:30,142 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/28772cf15/11c48e020b4842148c210ec0961f0adc/FLAG6a0c86fb8 [2018-10-23 23:21:30,166 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/28772cf15/11c48e020b4842148c210ec0961f0adc [2018-10-23 23:21:30,180 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 23:21:30,182 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 23:21:30,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 23:21:30,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 23:21:30,188 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 23:21:30,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:21:30" (1/1) ... [2018-10-23 23:21:30,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d7ae5c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:30, skipping insertion in model container [2018-10-23 23:21:30,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:21:30" (1/1) ... [2018-10-23 23:21:30,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 23:21:30,265 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 23:21:30,721 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:21:30,726 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 23:21:30,894 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:21:30,915 INFO L193 MainTranslator]: Completed translation [2018-10-23 23:21:30,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:30 WrapperNode [2018-10-23 23:21:30,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 23:21:30,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 23:21:30,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 23:21:30,918 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 23:21:30,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:30" (1/1) ... [2018-10-23 23:21:30,958 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:30" (1/1) ... [2018-10-23 23:21:31,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 23:21:31,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 23:21:31,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 23:21:31,021 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 23:21:31,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:30" (1/1) ... [2018-10-23 23:21:31,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:30" (1/1) ... [2018-10-23 23:21:31,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:30" (1/1) ... [2018-10-23 23:21:31,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:30" (1/1) ... [2018-10-23 23:21:31,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:30" (1/1) ... [2018-10-23 23:21:31,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:30" (1/1) ... [2018-10-23 23:21:31,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:30" (1/1) ... [2018-10-23 23:21:31,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 23:21:31,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 23:21:31,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 23:21:31,260 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 23:21:31,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:30" (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 [2018-10-23 23:21:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 23:21:31,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 23:21:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 23:21:31,329 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 23:21:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 23:21:31,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 23:21:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 23:21:31,330 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 23:21:34,535 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 23:21:34,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:21:34 BoogieIcfgContainer [2018-10-23 23:21:34,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 23:21:34,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 23:21:34,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 23:21:34,547 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 23:21:34,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:21:30" (1/3) ... [2018-10-23 23:21:34,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b063e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:21:34, skipping insertion in model container [2018-10-23 23:21:34,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:30" (2/3) ... [2018-10-23 23:21:34,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b063e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:21:34, skipping insertion in model container [2018-10-23 23:21:34,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:21:34" (3/3) ... [2018-10-23 23:21:34,551 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label21_true-unreach-call_false-termination.c [2018-10-23 23:21:34,562 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 23:21:34,573 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 23:21:34,592 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 23:21:34,630 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 23:21:34,631 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 23:21:34,631 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 23:21:34,631 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 23:21:34,631 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 23:21:34,632 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 23:21:34,632 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 23:21:34,632 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 23:21:34,660 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-23 23:21:34,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-23 23:21:34,676 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:21:34,678 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:21:34,680 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:21:34,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:21:34,687 INFO L82 PathProgramCache]: Analyzing trace with hash 64907071, now seen corresponding path program 1 times [2018-10-23 23:21:34,689 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:21:34,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:34,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:21:34,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:34,742 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:21:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:21:35,404 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:21:35,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:21:35,548 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:21:35,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:21:35,548 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:21:35,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:21:35,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:21:35,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:21:35,580 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-23 23:21:37,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:21:37,093 INFO L93 Difference]: Finished difference Result 618 states and 1056 transitions. [2018-10-23 23:21:37,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:21:37,096 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2018-10-23 23:21:37,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:21:37,117 INFO L225 Difference]: With dead ends: 618 [2018-10-23 23:21:37,118 INFO L226 Difference]: Without dead ends: 379 [2018-10-23 23:21:37,125 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:21:37,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-10-23 23:21:37,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-10-23 23:21:37,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-10-23 23:21:37,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 621 transitions. [2018-10-23 23:21:37,207 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 621 transitions. Word has length 103 [2018-10-23 23:21:37,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:21:37,208 INFO L481 AbstractCegarLoop]: Abstraction has 379 states and 621 transitions. [2018-10-23 23:21:37,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:21:37,209 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 621 transitions. [2018-10-23 23:21:37,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-23 23:21:37,215 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:21:37,215 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] [2018-10-23 23:21:37,216 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:21:37,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:21:37,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1456017738, now seen corresponding path program 1 times [2018-10-23 23:21:37,217 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:21:37,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:37,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:21:37,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:37,218 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:21:37,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:21:37,474 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:21:37,841 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:21:37,841 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:21:37,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:21:37,842 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:21:37,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:21:37,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:21:37,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:21:37,845 INFO L87 Difference]: Start difference. First operand 379 states and 621 transitions. Second operand 6 states. [2018-10-23 23:21:39,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:21:39,162 INFO L93 Difference]: Finished difference Result 750 states and 1238 transitions. [2018-10-23 23:21:39,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 23:21:39,163 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2018-10-23 23:21:39,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:21:39,167 INFO L225 Difference]: With dead ends: 750 [2018-10-23 23:21:39,167 INFO L226 Difference]: Without dead ends: 377 [2018-10-23 23:21:39,172 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-23 23:21:39,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2018-10-23 23:21:39,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 372. [2018-10-23 23:21:39,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2018-10-23 23:21:39,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 580 transitions. [2018-10-23 23:21:39,202 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 580 transitions. Word has length 119 [2018-10-23 23:21:39,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:21:39,202 INFO L481 AbstractCegarLoop]: Abstraction has 372 states and 580 transitions. [2018-10-23 23:21:39,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:21:39,203 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 580 transitions. [2018-10-23 23:21:39,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-23 23:21:39,207 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:21:39,207 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:21:39,208 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:21:39,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:21:39,208 INFO L82 PathProgramCache]: Analyzing trace with hash 641817781, now seen corresponding path program 1 times [2018-10-23 23:21:39,209 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:21:39,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:39,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:21:39,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:39,211 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:21:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:21:39,464 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:21:39,589 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:21:39,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:21:39,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:21:39,590 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:21:39,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:21:39,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:21:39,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:21:39,592 INFO L87 Difference]: Start difference. First operand 372 states and 580 transitions. Second operand 6 states. [2018-10-23 23:21:41,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:21:41,406 INFO L93 Difference]: Finished difference Result 952 states and 1493 transitions. [2018-10-23 23:21:41,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:21:41,408 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-10-23 23:21:41,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:21:41,413 INFO L225 Difference]: With dead ends: 952 [2018-10-23 23:21:41,413 INFO L226 Difference]: Without dead ends: 586 [2018-10-23 23:21:41,416 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 [2018-10-23 23:21:41,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2018-10-23 23:21:41,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 563. [2018-10-23 23:21:41,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2018-10-23 23:21:41,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 823 transitions. [2018-10-23 23:21:41,453 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 823 transitions. Word has length 126 [2018-10-23 23:21:41,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:21:41,454 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 823 transitions. [2018-10-23 23:21:41,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:21:41,454 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 823 transitions. [2018-10-23 23:21:41,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-23 23:21:41,458 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:21:41,458 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:21:41,458 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:21:41,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:21:41,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1176628157, now seen corresponding path program 1 times [2018-10-23 23:21:41,459 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:21:41,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:41,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:21:41,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:41,461 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:21:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:21:41,947 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:21:41,948 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:21:41,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:21:41,948 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:21:41,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:21:41,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:21:41,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:21:41,950 INFO L87 Difference]: Start difference. First operand 563 states and 823 transitions. Second operand 5 states. [2018-10-23 23:21:44,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:21:44,250 INFO L93 Difference]: Finished difference Result 1269 states and 1897 transitions. [2018-10-23 23:21:44,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:21:44,253 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2018-10-23 23:21:44,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:21:44,260 INFO L225 Difference]: With dead ends: 1269 [2018-10-23 23:21:44,260 INFO L226 Difference]: Without dead ends: 562 [2018-10-23 23:21:44,263 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:21:44,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2018-10-23 23:21:44,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2018-10-23 23:21:44,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2018-10-23 23:21:44,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 811 transitions. [2018-10-23 23:21:44,295 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 811 transitions. Word has length 130 [2018-10-23 23:21:44,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:21:44,295 INFO L481 AbstractCegarLoop]: Abstraction has 562 states and 811 transitions. [2018-10-23 23:21:44,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:21:44,296 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 811 transitions. [2018-10-23 23:21:44,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-23 23:21:44,298 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:21:44,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:21:44,299 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:21:44,299 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:21:44,299 INFO L82 PathProgramCache]: Analyzing trace with hash 956906181, now seen corresponding path program 1 times [2018-10-23 23:21:44,300 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:21:44,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:44,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:21:44,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:44,301 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:21:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:21:44,469 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:21:44,470 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:21:44,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:21:44,470 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:21:44,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:21:44,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:21:44,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:21:44,472 INFO L87 Difference]: Start difference. First operand 562 states and 811 transitions. Second operand 6 states. [2018-10-23 23:21:45,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:21:45,920 INFO L93 Difference]: Finished difference Result 1544 states and 2298 transitions. [2018-10-23 23:21:45,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:21:45,921 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-10-23 23:21:45,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:21:45,928 INFO L225 Difference]: With dead ends: 1544 [2018-10-23 23:21:45,928 INFO L226 Difference]: Without dead ends: 988 [2018-10-23 23:21:45,934 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:21:45,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2018-10-23 23:21:45,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 962. [2018-10-23 23:21:45,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 962 states. [2018-10-23 23:21:45,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1349 transitions. [2018-10-23 23:21:45,968 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1349 transitions. Word has length 134 [2018-10-23 23:21:45,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:21:45,969 INFO L481 AbstractCegarLoop]: Abstraction has 962 states and 1349 transitions. [2018-10-23 23:21:45,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:21:45,969 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1349 transitions. [2018-10-23 23:21:45,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-23 23:21:45,973 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:21:45,973 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 23:21:45,973 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:21:45,974 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:21:45,974 INFO L82 PathProgramCache]: Analyzing trace with hash -973773874, now seen corresponding path program 1 times [2018-10-23 23:21:45,974 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:21:45,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:45,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:21:45,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:45,975 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:21:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:21:46,642 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:21:46,642 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:21:46,643 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:21:46,644 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 141 with the following transitions: [2018-10-23 23:21:46,646 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [25], [26], [30], [34], [38], [42], [53], [64], [68], [72], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [495], [497], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-23 23:21:46,721 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:21:46,722 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:22:56,225 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:22:56,226 INFO L272 AbstractInterpreter]: Visited 107 different actions 416 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 38 variables. [2018-10-23 23:22:56,239 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:22:56,239 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:23:02,049 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 91.67% of their original sizes. [2018-10-23 23:23:02,050 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-23 23:25:53,124 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:25:53,135 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:25:53,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:25:53 BoogieIcfgContainer [2018-10-23 23:25:53,135 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:25:53,137 INFO L168 Benchmark]: Toolchain (without parser) took 262955.56 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -871.6 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-23 23:25:53,138 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-23 23:25:53,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 733.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-23 23:25:53,140 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 23:25:53,140 INFO L168 Benchmark]: Boogie Preprocessor took 238.28 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -828.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2018-10-23 23:25:53,141 INFO L168 Benchmark]: RCFGBuilder took 3276.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 119.9 MB). Peak memory consumption was 119.9 MB. Max. memory is 7.1 GB. [2018-10-23 23:25:53,142 INFO L168 Benchmark]: TraceAbstraction took 258594.91 ms. Allocated memory was 2.3 GB in the beginning and 3.6 GB in the end (delta: 1.4 GB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -205.6 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-23 23:25:53,148 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 733.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 103.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 238.28 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -828.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3276.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 119.9 MB). Peak memory consumption was 119.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 258594.91 ms. Allocated memory was 2.3 GB in the beginning and 3.6 GB in the end (delta: 1.4 GB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -205.6 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 460]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 460). Cancelled while BasicCegarLoop was analyzing trace of length 141 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 258.5s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 8.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 522 SDtfs, 2941 SDslu, 457 SDs, 0 SdLazy, 3236 SolverSat, 624 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=962occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 69.5s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.993337904356458 AbsIntWeakeningRatio, 0.23741007194244604 AbsIntAvgWeakeningVarsNumRemoved, 1350.8848920863309 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 54 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 612 NumberOfCodeBlocks, 612 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 607 ConstructedInterpolants, 0 QuantifiedInterpolants, 351343 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 85/85 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown